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Comparison of Large Language Models in Answering Immuno-Oncology Questions: A Cross-Sectional Study.
medRxiv 2023 October 32
BACKGROUND: The capability of large language models (LLMs) to understand and generate human-readable text has prompted the investigation of their potential as educational and management tools for cancer patients and healthcare providers.
MATERIALS AND METHODS: We conducted a cross-sectional study aimed at evaluating the ability of ChatGPT-4, ChatGPT-3.5, and Google Bard to answer questions related to four domains of immuno-oncology (Mechanisms, Indications, Toxicities, and Prognosis). We generated 60 open-ended questions (15 for each section). Questions were manually submitted to LLMs, and responses were collected on June 30th, 2023. Two reviewers evaluated the answers independently.
RESULTS: ChatGPT-4 and ChatGPT-3.5 answered all questions, whereas Google Bard answered only 53.3% (p <0.0001). The number of questions with reproducible answers was higher for ChatGPT-4 (95%) and ChatGPT3.5 (88.3%) than for Google Bard (50%) (p <0.0001). In terms of accuracy, the number of answers deemed fully correct were 75.4%, 58.5%, and 43.8% for ChatGPT-4, ChatGPT-3.5, and Google Bard, respectively (p = 0.03). Furthermore, the number of responses deemed highly relevant was 71.9%, 77.4%, and 43.8% for ChatGPT-4, ChatGPT-3.5, and Google Bard, respectively (p = 0.04). Regarding readability, the number of highly readable was higher for ChatGPT-4 and ChatGPT-3.5 (98.1%) and (100%) compared to Google Bard (87.5%) (p = 0.02).
CONCLUSION: ChatGPT-4 and ChatGPT-3.5 are potentially powerful tools in immuno-oncology, whereas Google Bard demonstrated relatively poorer performance. However, the risk of inaccuracy or incompleteness in the responses was evident in all three LLMs, highlighting the importance of expert-driven verification of the outputs returned by these technologies.
IMPLICATIONS FOR PRACTICE: Several studies have recently evaluated whether large language models may be feasible tools for providing educational and management information for cancer patients and healthcare providers. In this cross-sectional study, we assessed the ability of ChatGPT-4, ChatGPT-3.5, and Google Bard to answer questions related to immuno-oncology. ChatGPT-4 and ChatGPT-3.5 returned a higher proportion of responses, which were more accurate and comprehensive, than those returned by Google Bard, yielding highly reproducible and readable outputs. These data support ChatGPT-4 and ChatGPT-3.5 as powerful tools in providing information on immuno-oncology; however, accuracy remains a concern, with expert assessment of the output still indicated.
MATERIALS AND METHODS: We conducted a cross-sectional study aimed at evaluating the ability of ChatGPT-4, ChatGPT-3.5, and Google Bard to answer questions related to four domains of immuno-oncology (Mechanisms, Indications, Toxicities, and Prognosis). We generated 60 open-ended questions (15 for each section). Questions were manually submitted to LLMs, and responses were collected on June 30th, 2023. Two reviewers evaluated the answers independently.
RESULTS: ChatGPT-4 and ChatGPT-3.5 answered all questions, whereas Google Bard answered only 53.3% (p <0.0001). The number of questions with reproducible answers was higher for ChatGPT-4 (95%) and ChatGPT3.5 (88.3%) than for Google Bard (50%) (p <0.0001). In terms of accuracy, the number of answers deemed fully correct were 75.4%, 58.5%, and 43.8% for ChatGPT-4, ChatGPT-3.5, and Google Bard, respectively (p = 0.03). Furthermore, the number of responses deemed highly relevant was 71.9%, 77.4%, and 43.8% for ChatGPT-4, ChatGPT-3.5, and Google Bard, respectively (p = 0.04). Regarding readability, the number of highly readable was higher for ChatGPT-4 and ChatGPT-3.5 (98.1%) and (100%) compared to Google Bard (87.5%) (p = 0.02).
CONCLUSION: ChatGPT-4 and ChatGPT-3.5 are potentially powerful tools in immuno-oncology, whereas Google Bard demonstrated relatively poorer performance. However, the risk of inaccuracy or incompleteness in the responses was evident in all three LLMs, highlighting the importance of expert-driven verification of the outputs returned by these technologies.
IMPLICATIONS FOR PRACTICE: Several studies have recently evaluated whether large language models may be feasible tools for providing educational and management information for cancer patients and healthcare providers. In this cross-sectional study, we assessed the ability of ChatGPT-4, ChatGPT-3.5, and Google Bard to answer questions related to immuno-oncology. ChatGPT-4 and ChatGPT-3.5 returned a higher proportion of responses, which were more accurate and comprehensive, than those returned by Google Bard, yielding highly reproducible and readable outputs. These data support ChatGPT-4 and ChatGPT-3.5 as powerful tools in providing information on immuno-oncology; however, accuracy remains a concern, with expert assessment of the output still indicated.
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