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Accepted for/Published in: JMIR Cancer

Date Submitted: Apr 23, 2025
Date Accepted: Aug 25, 2026

The final, peer-reviewed published version of this preprint can be found here:

Assessing the Accuracy, Completeness, and Reference Quality of GPT-4 and Google for Gynecologic Cancer Information: Comparative Quantitative Study

Smick AH, Ayoola M, Rajpara R, Lazo I, Chase DM

Assessing the Accuracy, Completeness, and Reference Quality of GPT-4 and Google for Gynecologic Cancer Information: Comparative Quantitative Study

JMIR Cancer 2026;12:e76471

DOI: 10.2196/76471

PMID: 42809848

ChatGPT-4 versus Google in providing gynecologic cancer information: A comparative evaluation of accuracy, completeness, and reference quality

  • Alexandra H. Smick; 
  • Martins Ayoola; 
  • Rajeshree Rajpara; 
  • Isabel Lazo; 
  • Dana M. Chase

ABSTRACT

Background:

Patients with newly diagnosed gynecologic (GYN) cancers often seek information online, but the quality of available resources may be inconsistent. While ChatGPT may offer an alternative to traditional internet search engines, its performance remains largely understudied in GYN oncology.

Objective:

To compare the completeness, accuracy, and reference quality of patient education responses generated by ChatGPT versus Google in clinical scenarios involving a new diagnosis of GYN cancer.

Methods:

Clinical scenarios representing early- and advanced-stage endometrial, ovarian, and cervical cancers were developed by GYN oncologists using publicly available patient education materials. Each included four standardized questions on etiology, prognosis, treatment, and treatment efficacy. ChatGPT-4 and Google were queried for each question, with new sessions for ChatGPT and private browsing for Google to minimize bias. Responses were independently rated by four blinded GYN oncology experts. Accuracy was scored on a 6-point Likert scale; completeness and reference quality were scored on 3-point scales. Reference quality was categorized as low (commercial), medium (institutional/government), or high (peer-reviewed). Reviewer comments were also collected. Descriptive statistics and Wilcoxon signed-rank tests were used for analysis.

Results:

Across six clinical scenarios and 21 standardized questions (n=84 total responses), ChatGPT outperformed Google on all evaluated domains. The median accuracy score was 6 (IQR 5-6) for ChatGPT and 5 (IQR 4-6) for Google (P=.04). The median completeness score was 3 (IQR 3-3) for ChatGPT and 2 (IQR 1-3) for Google (P=.009). Reference quality was also higher for ChatGPT with a median score of 3 (IQR 3-3) compared to 2 (IQR 2-2) for Google (P=.009). Reviewer comments noted that ChatGPT provided more accurate, comprehensive, and personalized responses, while Google returned less detailed content from general consumer health websites rather than peer-reviewed sources.

Conclusions:

ChatGPT may serve as a reliable and high-quality resource for patient education in GYN oncology. Compared to Google, it delivered more accurate, complete, and better-referenced content. Further research is needed to assess the readability and accessibility of ChatGPT-generated content across diverse patient populations.


 Citation

Please cite as:

Smick AH, Ayoola M, Rajpara R, Lazo I, Chase DM

Assessing the Accuracy, Completeness, and Reference Quality of GPT-4 and Google for Gynecologic Cancer Information: Comparative Quantitative Study

JMIR Cancer 2026;12:e76471

DOI: 10.2196/76471

PMID: 42809848

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