Health-focused conversational agents in person-centered care: a review of apps npj Digital Medicine

Physicians Perceptions of Chatbots in Health Care: Cross-Sectional Web-Based Survey PMC

chatbot in healthcare

Doing the opposite may leave many users bored and uninterested in the conversation. One of the key elements of an effective conversation is turn-taking, and many bots fail in this aspect. A friendly and funny chatbot may work best for a chatbot for new mothers seeking information about their newborns. Still, it may not work for a doctor seeking information about drug dosages or adverse effects. First, the chatbot helps Peter relieve the pressure of his perceived mistake by letting him know it’s not out of the ordinary, which may restore his confidence; then, it provides useful steps to help him deal with it better.

They offer a powerful combination to improve patient outcomes and streamline healthcare delivery. While chatbots can provide personalized support to patients, they cannot replace the human touch. Healthcare providers must ensure that chatbots are used in conjunction with, and not as a replacement for human healthcare professionals. Artificial Intelligence (AI) and automation have rapidly become popular in many industries, including healthcare.

  • The challenge here for software developers is to keep training chatbots on COVID-19-related verified updates and research data.
  • Ninety-six percent of apps employed a finite-state conversational design, indicating that users are taken through a flow of predetermined steps then provided with a response.
  • No-show appointments result in a considerable loss of revenue and underutilize the physician’s time.
  • One of the consequences can be the shift from operator to supervisor, that is, expert work becomes more about monitoring and surveillance than before (Zerilli et al. 2019).
  • A text-to-text chatbot by Divya et al [32] engages patients regarding their medical symptoms to provide a personalized diagnosis and connects the user with the appropriate physician if major diseases are detected.
  • This relieving of pressure on contact centres is especially important in the present COVID-19 situation (Dennis et al. 2020, p. 1727), thus making chatbots cost-effective.

If you look up articles about flu symptoms on WebMD, for instance, a chatbot may pop up with information about flu treatment and current outbreaks in your area. Capacity’s conversational AI platform enables graceful human handoffs and intuitive task management via a powerful workflow automation suite, robust developer platform, and flexible database that can be deployed anywhere. Which method the healthbot employs to interact with the user in the conversation. In the United States alone, more than half of healthcare leaders, 56% to be precise, noted that the value brought by AI exceeded their expectations. It’s recommended to develop an AI chatbot as a distinctive microservice so that it can be easily connected with other software solutions via API.

Chatbot Reduces Waiting Time

Identifying the source of algorithm bias is crucial for addressing health care disparities between various demographic groups and improving data collection. Although there are a variety of techniques for the development of chatbots, the general layout is relatively straightforward. As a computer application that uses ML to mimic human conversation, the underlying concept is similar for all types with 4 essential stages (input processing, input understanding, response generation, and response selection) [14]. First, the user makes a request, in text or speech format, which is received and interpreted by the chatbot. From there, the processed information could be remembered, or more details could be requested for clarification.

Almost half of the physicians perceived health care chatbots to be important for patients, especially for helping patients better manage their own health. Almost half of the physicians also stated that they would be likely to prescribe the use of the technology to patients and recommend it to their colleagues. About half of the physicians also agreed that chatbots would benefit the physical, psychological, and behavioral health outcomes of patients, such as diet improvement, medication adherence, exercise frequency, or stress reduction. The other half of physicians was roughly equally divided between being an opponent or having a neutral opinion to the perceived importance and benefits of health care chatbots. Survey questions were designed in consultation with medical scientists, Web developers, data scientists, and technology specialists with expertise in digital medicine.

Recently, Google Cloud launched an AI chatbot called Rapid Response Virtual Agent Program to provide information to users and answer their questions about coronavirus symptoms. Google has also expanded this opportunity for tech companies to allow them to use its open-source framework to develop AI chatbots. The challenge here for software developers is to keep training chatbots on COVID-19-related verified updates and research data. As researchers uncover new symptom patterns, these details need to be integrated into the ML training data to enable a bot to make an accurate assessment of a user’s symptoms at any given time. Recently the World Health Organization (WHO) partnered with Ratuken Viber, a messaging app, to develop an interactive chatbot that can provide accurate information about COVID-19 in multiple languages.

The chatbots then, through EDI, store this information in the medical facility database to facilitate patient admission, symptom tracking, doctor-patient communication, and medical record keeping. Customized chat technology helps patients avoid unnecessary lab tests or expensive treatments. A conversational bot can examine the patient’s symptoms and offer potential diagnoses. This also helps medical professionals stay updated about any changes in patient symptoms. This bodes well for patients with long-term illnesses like diabetes or heart disease symptoms.

To test and evaluate the accuracy and completeness of GPT-4 as compared to GPT-3.5, researchers asked both systems 44 questions regarding melanoma and immunotherapy guidelines. The mean score for accuracy improved from 5.2 to 5.7, while the mean score for completeness improved from 2.6 to 2.8, as medians for both systems were 6.0 and 3.0, respectively. With abundant benefits and rapid innovation in conversational AI, adoption is accelerating quickly. Dr. Liji Thomas is an OB-GYN, who graduated from the Government Medical College, University of Calicut, Kerala, in 2001.

These are the tech measures, policies, and procedures that protect and control access to electronic health data. These measures ensure that only authorized people have access to electronic PHI. Furthermore, this rule requires that workforce members only have access to PHI as appropriate for their roles and job functions.

The healthbots serve a range of functions including the provision of health education, assessment of symptoms, and assistance with tasks such as scheduling. Currently, most bots available on app stores are patient-facing and focus on the areas of primary care and mental health. Only six (8%) of apps included in the review had a theoretical/therapeutic underpinning Chat PG for their approach. Two-thirds of the apps contained features to personalize the app content to each user based on data collected from them. Seventy-nine percent apps did not have any of the security features assessed and only 10 apps reported HIPAA compliance. Table 1 presents an overview of other characteristics and features of included apps.

Foundation metrics for evaluating effectiveness of healthcare conversations powered by generative AI

Using AI and natural language processing, chatbots can help your patients book an appointment or answer a question. Many healthcare experts feel that chatbots may help with the self-diagnosis of minor illnesses, but the technology is not advanced enough to replace visits with medical professionals. However, collaborative efforts on fitting these applications to more demanding scenarios https://chat.openai.com/ are underway. Beginning with primary healthcare services, the chatbot industry could gain experience and help develop more reliable solutions. Chatbots, also known as conversational agents, interactive agents, virtual agents, virtual humans, or virtual assistants, are computer software applications that run automated tasks or scripts designed to simulate human conversation.

Chatbots can handle a large volume of patient inquiries, reducing the workload of healthcare professionals and allowing them to focus on more complex tasks. This increased efficiency can result in better patient outcomes and a higher quality of care. Chatbots can provide insurance services and healthcare resources to patients and insurance plan members.

Through the rapid deployment of chatbots, the tech industry may gain a new kind of dominance in health care. AI technologies, especially ML, have increasingly been occupying other industries; thus, these technologies are arguably naturally adapted to the healthcare sector. In most cases, it seems that chatbots have had a positive effect in precisely the same tasks performed in other industries (e.g. customer service). We can expect chatbots will one day provide a truly personalized, comprehensive healthcare companion for every patient.

For example, it may be almost impossible for a healthcare chat bot to give an accurate diagnosis based on symptoms for complex conditions. While chatbots that serve as symptom checkers could accurately generate differential diagnoses of an array of symptoms, it will take a doctor, in many cases, to investigate or query further to reach an accurate diagnosis. A user interface is the meeting point between men and computers; the point where a user interacts with the design. Depending on the type of chatbot, developers use a graphical user interface, voice interactions, or gestures, all of which use different machine learning models to understand human language and generate appropriate responses. This chatbot solution for healthcare helps patients get all the details they need about a cancer-related topic in one place.

Neither does she miss a dose of the prescribed antibiotic – a healthcare chatbot app brings her up to speed on those details. Chatbots must be regularly updated and maintained to ensure their accuracy and reliability. Healthcare providers can overcome this challenge by investing in a dedicated team to manage bots and ensure they are up-to-date with the latest healthcare information.

Continual algorithm training and updates would be necessary because of the constant improvements in current standards of care. Further refinements and testing for the accuracy of algorithms are required before clinical implementation [71]. This area holds tremendous potential, as an estimated ≥50% of all patients with cancer have used radiotherapy during the course of their treatment. Chatbots have the potential to address many of the current concerns regarding cancer care mentioned above. This includes the triple aim of health care that encompasses improving the experience of care, improving the health of populations, and reducing per capita costs [21].

Chatbots are well equipped to help patients get their healthcare insurance claims approved speedily and without hassle since they have been with the patient throughout the illness. Not only can they recommend the most useful insurance policies for the patient’s medical condition, but they can save time and money by streamlining the process of claiming insurance and simplifying the payment process. A total of 100 practicing physicians across the United States completed a Web-based, self-report survey to examine their opinions of chatbot technology in health care. Descriptive statistics and frequencies were used to examine the characteristics of participants.

It also assists healthcare providers by serving info to cancer patients and their families. The medical chatbot matches users’ inquiries against a large repository of evidence-based medical data to provide simple answers. This medical diagnosis chatbot also offers additional med info for every symptom you input.

The possibilities are endless, and as technology continues to evolve, we can expect to see more innovative uses of bots in the healthcare industry. Our review suggests that healthbots, while potentially transformative in centering care around the user, are in a nascent state of development and require further research on development, automation, and adoption for a population-level health impact. We conducted iOS and Google Play application store searches in June and July 2020 using the 42Matters software. A team of two researchers (PP, JR) used the relevant search terms in the “Title” and “Description” categories of the apps.

A.I. in healthcare: Personalized health chatbot hits app store – WSBT-TV

A.I. in healthcare: Personalized health chatbot hits app store.

Posted: Wed, 20 Mar 2024 07:00:00 GMT [source]

Using a combination of data-driven natural language processing with knowledge-driven diagnostics, this chatbot interviews the patient, understands their chief complaints, and submits reports to physicians for further analysis [43]. Similarly, Sense.ly (Sense.ly, Inc) acts as a web-based nurse to assist in monitoring appointments, managing patients’ conditions, and suggesting therapies. Another chatbot that reduces the burden on clinicians and decreases wait time is Careskore (CareShore, Inc), which tracks vitals and anticipates the need for hospital admissions [42]. Chatbots have also been proposed to autonomize patient encounters through several advanced eHealth services. In addition to collecting data and providing bookings, Health OnLine Medical Suggestions or HOLMES (Wipro, Inc) interacts with patients to support diagnosis, choose the proper treatment pathway, and provide prevention check-ups [44].

Use of automated conversational agents in improving young population mental health: a scoping review

Some of these platforms, e.g., Telegram, also provide custom keyboards with predefined reply buttons to make the conversation seamless. Not only do these responses defeat the purpose of the conversation, but they also make the conversation one-sided and unnatural.

Four apps utilized AI generation, indicating that the user could write two to three sentences to the healthbot and receive a potentially relevant response. Healthcare professionals can now efficiently manage resources and prioritize clinical cases using artificial intelligence chatbots. The technology helps clinicians categorize patients depending on how severe their conditions are. A medical bot assesses users through questions to define patients who require urgent treatment.

The division of task-oriented and social chatbots requires additional elements to show the relation among users, experts (professionals) and chatbots. Most chatbot cases—at least task-oriented chatbots—seem to be user facing, that is, they are like a ‘gateway’ between the patient and the HCP. A total of 100 practicing GPs participated in an online research survey that examined their perceived benefits, challenges, and risks of using chatbots in health care. Overall, the findings demonstrated that physicians have a wide variety of perspectives on the use of health care chatbots for patients, with few major skews to one side or the other regarding agreement levels to a variety of characteristics.

How AI health care chatbots learn from the questions of an Indian women’s organization – The Associated Press

How AI health care chatbots learn from the questions of an Indian women’s organization.

Posted: Wed, 21 Feb 2024 08:00:00 GMT [source]

Today’s healthcare chatbots are obviously far more reliable, effective, and interactive. As advancements in AI are ever evolving and ameliorating, chatbots will inevitably perform a range of complex activities and become an indispensable part of many industries, mainly, healthcare. Chatbots are made on AI technology and are programmed to access vast healthcare data to run diagnostics and check patients’ symptoms. It can provide reliable and up-to-date information to patients as notifications or stories.

Input modality, or how the user interacts with the chatbot, was primarily text-based (96%), with seven apps (9%) allowing for spoken/verbal input, and three (4%) allowing for visual input. For the output modality, or how the chatbot interacts with the user, all accessible apps had a text-based interface (98%), with five apps (6%) also allowing spoken/verbal output, and six apps (8%) supporting visual output. Visual output, in this case, included the use of an embodied avatar with modified expressions in response to user input.

Data were analyzed using descriptive statistics and frequencies to examine the characteristics of participant responses to survey items on health care chatbots. Preliminary analyses revealed no major differences across factors of age, gender, or years of practice. Conversational chatbots can be trained on large datasets, including the symptoms, mode of transmission, natural course, prognostic factors, and treatment of the coronavirus infection. Bots can then pull info from this data to generate automated responses to users’ questions.

Chatbots provide patients with a more personalized experience, making them feel more connected to their healthcare providers. Chatbots can help patients feel more comfortable and involved in their healthcare by conversationally engaging with them. As such, there are concerns about how chatbots collect, store, and use patient data.

chatbot in healthcare

ChatGPT and similar large language models would be the next big step for artificial intelligence incorporating into the healthcare industry. With hundreds of millions of users, people could easily chatbot in healthcare find out how to treat their symptoms, how to contact a physician, and so on. Relevant is ready to consult you and help you create an informational, administrative, hybrid chatbot, etc.

The benefit of using chatbots for smoking cessation across various age groups has been highlighted in numerous studies showing improved motivation, accessibility, and adherence to treatment, which have led to increased smoking abstinence [89-91]. The cognitive behavioral therapy–based chatbot SMAG, supporting users over the Facebook social network, resulted in a 10% higher cessation rate compared with control groups [50]. Motivational interview–based chatbots have been proposed with promising results, where a significant number of patients showed an increase in their confidence and readiness to quit smoking after 1 week [92]. No studies have been found to assess the effectiveness of chatbots for smoking cessation in terms of ethnic, racial, geographic, or socioeconomic status differences. Creating chatbots with prespecified answers is simple; however, the problem becomes more complex when answers are open. Bella, one of the most advanced text-based chatbots on the market advertised as a coach for adults, gets stuck when responses are not prompted [51].

Healthcare providers must ensure that privacy laws and ethical standards handle patient data. For example, chatbots can schedule appointments, answer common questions, provide medication reminders, and even offer mental health support. These chatbots also streamline internal support by giving these professionals quick access to information, such as patient history and treatment plans. Today, chatbots offer diagnosis of symptoms, mental healthcare consultation, nutrition facts and tracking, and more. For example, in 2020 WhatsApp collaborated with the World Health Organization (WHO) to make a chatbot service that answers users’ questions on COVID-19.

The crucial question that policy-makers are faced with is what kind of health services can be automated and translated into machine readable form. From the patient’s perspective, various chatbots have been designed for symptom screening and self-diagnosis. The ability of patients to be directed to urgent referral pathways through early warning signs has been a promising market. Decreased wait times in accessing health care services have been found to correlate with improved patient outcomes and satisfaction [59-61]. The automated chatbot, Quro (Quro Medical, Inc), provides presynopsis based on symptoms and history to predict user conditions (average precision approximately 0.82) without a form-based data entry system [25]. In addition to diagnosis, Buoy Health (Buoy Health, Inc) assists users in identifying the cause of their illness and provides medical advice [26].

Use cases should be defined in advance, involving business analysts and software engineers. AI-powered chatbots have been one of the year’s top topics, with ChatGPT, Bard, and other conversational agents taking center stage. For healthcare businesses, the adoption of chatbots may become a strategic advantage. Discover what they are in healthcare and their game-changing potential for business. Patients appreciate that using a healthcare chatbot saves time and money, as they don’t have to commute all the way to the doctor’s clinic or the hospital. Even though most types of chatbots in healthcare do similar things, they have some differences we should talk about.

Although prescriptive chatbots are conversational by design, they are built not just to answer questions or provide direction, but to offer therapeutic solutions. Conversational chatbots are built to be contextual tools that respond based on the user’s intent. However, there are different levels of maturity to a conversational chatbot – not all of them offer the same depth of conversation. Furthermore, hospitals and private clinics use medical chat bots to triage and clerk patients even before they come into the consulting room. These bots ask relevant questions about the patients’ symptoms, with automated responses that aim to produce a sufficient medical history for the doctor. Subsequently, these patient histories are sent via a messaging interface to the doctor, who triages to determine which patients need to be seen first and which patients require a brief consultation.

Chatbots have already gained traction in retail, news media, social media, banking, and customer service. Many people engage with chatbots every day on their smartphones without even knowing. From catching up on sports news to navigating bank applications to playing conversation-based games on Facebook Messenger, chatbots are revolutionizing the way we live. The use of chatbots in health care presents a novel set of moral and ethical challenges that must be addressed for the public to fully embrace this technology.

Selecting the right platform and technology is critical for developing a successful healthcare chatbot, and Capacity is an ideal choice for healthcare organizations. With its advanced AI capabilities, user-friendly interface, and pre-built templates for healthcare applications, Capacity provides a powerful platform for creating effective chatbots to improve patient experience and care. Patients can access your healthcare chatbots anytime, supporting patients whenever and wherever needed. This can be especially beneficial for patients with urgent questions or concerns outside regular business hours or those in different time zones.

For example, CoachAI and Smart Wireless Interactive Health System used chatbot technology to track patients’ progress, provide insight to physicians, and suggest suitable activities [45,46]. Another app is Weight Mentor, which provides self-help motivation for weight loss maintenance and allows for open conversation without being affected by emotions [47]. Health Hero (Health Hero, Inc), Tasteful Bot (Facebook, Inc), Forksy (Facebook, Inc), and SLOWbot (iaso heath, Inc) guide users to make informed decisions on food choices to change unhealthy eating habits [48,49]. The effectiveness of these apps cannot be concluded, as a more rigorous analysis of the development, evaluation, and implementation is required. Nevertheless, chatbots are emerging as a solution for healthy lifestyle promotion through access and human-like communication while maintaining anonymity. Identifying and characterizing elements of NLP is challenging, as apps do not explicitly state their machine learning approach.

Once upon a time, not all that long ago, visiting the doctor meant sitting in a crowded waiting room. The HIPAA Security Rule requires that you identify all the sources of PHI, including external sources, and all human, technical, and environmental threats to the safety of PHI in your company. The Rule requires that your company design a mechanism that encrypts all electronic PHI when necessary, both at rest or in transit over electronic communication tools such as the internet. Furthermore, the Security Rule allows flexibility in the type of encryption that covered entities may use. The Security Rule describes the physical safeguards as the physical measures, policies, and processes you have to protect a covered entity’s electronic PHI from security violations.

The first chatbot was designed for individuals with psychological issues [9]; however, they continue to be used for emotional support and psychiatric counseling with their ability to express sympathy and empathy [81]. A study performed on Woebot, developed based on cognitive behavioral therapy, showed that depressive symptoms were significantly reduced, and participants were more receptive than in traditional therapies [41]. This agreed with the Shim results, also using the same type of therapy, which showed that the intervention was highly engaging, improved well-being, and reduced stress [82].

Applications that only sent in-app text reminders and did not receive any text input from the user were excluded. Apps were also excluded if they were specific to an event (i.e., apps for conferences or marches). Medical chatbots might pose concerns about the privacy and security of sensitive patient data. This AI-driven technology can quickly respond to queries and sometimes even better than humans. A medical bot can recognize when a patient needs urgent help if trained and designed correctly. It can provide immediate attention from a doctor by setting appointments, especially during emergencies.

chatbot in healthcare

We stress here that our intention is not to provide empirical evidence for or against chatbots in health care; it is to advance discussions of professional ethics in the context of novel technologies. Many experts have emphasised that chatbots are not sufficiently mature to be able to technically diagnose patient conditions or replace the judgements of health professionals. In this paper, we take a proactive approach and consider how the emergence of task-oriented chatbots as partially automated consulting systems can influence clinical practices and expert–client relationships. We suggest the need for new approaches in professional ethics as the large-scale deployment of artificial intelligence may revolutionise professional decision-making and client–expert interaction in healthcare organisations. We argue that the implementation of chatbots amplifies the project of rationality and automation in clinical practice and alters traditional decision-making practices based on epistemic probability and prudence.

chatbot in healthcare

Although they are capable of solving complex problems that are unimaginable by humans, these systems remain highly opaque, and the resulting solutions may be unintuitive. This means that the systems’ behavior is hard to explain by merely looking inside, and understanding exactly how they are programmed is nearly impossible. For both users and developers, transparency becomes an issue, as they are not able to fully understand the solution or intervene to predictably change the chatbot’s behavior [97]. With the novelty and complexity of chatbots, obtaining valid informed consent where patients can make their own health-related risk and benefit assessments becomes problematic [98]. Without sufficient transparency, deciding how certain decisions are made or how errors may occur reduces the reliability of the diagnostic process.

For example, when a chatbot suggests a suitable recommendation, it makes patients feel genuinely cared for. Our tech team has prepared five app ideas for different types of AI chatbots in healthcare. AI chatbots in the healthcare industry are great at automating everyday responsibilities in the healthcare setting. You have probably heard of this platform, for it boasts of catering to almost 13 million users as of 2023.

Patients can use text, microphones, or cameras to get mental health assistance to engage with a clinical chatbot. A use case is a specific AI chatbot usage scenario with defined input data, flow, and outcomes. An AI-driven chatbot can identify use cases by understanding users’ intent from their requests.

This allows doctors to process prescription refills in batch or automate them in cases where doctor intervention is not necessary. Such a streamlined prescription refill process is great for cases when a clinician’s intervention isn’t required. More advanced AI algorithms can even interpret the purpose of the prescription renewal request. You can foun additiona information about ai customer service and artificial intelligence and NLP. In the first round of testing with GPT-3.5, the researchers tabulated a median accuracy score of 5.0 and a median completeness score of 3.0, meaning on the first try, ChatGPT-3.5 typically answered the questions nearly accurately and comprehensively.

These include OneRemission, which helps cancer patients manage symptoms and side effects, and Ada Health, which assesses symptoms and creates personalized health information, among others. ChatGPT and similar chatbot-style artificial intelligence software may soon serve a critical frontline role in the healthcare industry. ChatGPT is a large language model using vast amounts of data to generate predictive text responses to user queries. Released on November 30, 2022, ChatGPT, or Chat Generative Pre-trained Transformer, has become one of the fastest-growing consumer software applications, with hundreds of millions of global users. Some may be inclined to ask ChatGPT for medical advice instead of searching the internet for answers, which prompts the question of whether chatbox artificial intelligence is accurate and reliable for answering medical questions.

Nonetheless, this could be an effective decision-making tool for cancer therapy to standardize treatments. Although not specifically an oncology app, another chatbot example for clinicians’ use is the chatbot Safedrugbot (Safe In Breastfeeding) [69]. This is a chat messaging service for health professionals offering assistance with appropriate drug use information during breastfeeding. Promising progress has also been made in using AI for radiotherapy to reduce the workload of radiation staff or identify at-risk patients by collecting outcomes before and after treatment [70]. An ideal chatbot for health care professionals’ use would be able to accurately detect diseases and provide the proper course of recommendations, which are functions currently limited by time and budgetary constraints.

Rasa stack provides you with an open-source framework to build highly intelligent contextual models giving you full control over the process flow. Conversely, closed-source tools are third-party frameworks that provide custom-built models through which you run your data files. With these third-party tools, you have little control over the software design and how your data files are processed; thus, you have little control over the confidential and potentially sensitive patient information your model receives. The NLU is the library for natural language understanding that does the intent classification and entity extraction from the user input. This breaks down the user input for the chatbot to understand the user’s intent and context. The Rasa Core is the chatbot framework that predicts the next best action using a deep learning model.

By combining chatbots with telemedicine, healthcare providers can offer patients a more personalized and convenient healthcare experience. Patients can receive support and care remotely, reducing the need for in-person visits and improving access to healthcare services. Following Pasquale (2020), we can divide the use of algorithmic systems, such as chatbots, into two strands. First, there are those that use ML ‘to derive new knowledge from large datasets, such as improving diagnostic accuracy from scans and other images’. Second, ‘there are user-facing applications […] which interact with people in real-time’, providing advice and ‘instructions based on probabilities which the tool can derive and improve over time’ (p. 55). The latter, that is, systems such as chatbots, seem to complement and sometimes even substitute HCP patient consultations (p. 55).

Notably, 26 of the 26 answers improved in accuracy, with the median score for the group improving from 2.0 to 4.0. Of the 180 questions asked for GPT-3.5, 71 (39.4%) were completely accurate, and another 33 (18.3%) were nearly accurate. Roughly 8% of questions were completely incorrect, and most answers given an accuracy score of 2.0 or less were given to the most challenging questions.

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