Objective: The objective of this study was to evaluate the application of DNA ploidy analysis in large-scale population screening for cervical cancer. Methods: From March 2016 to March 2019, eligible subjects were enrolled and recommended to undergo DNA ploidy analysis, the ThinPrep cytology test (TCT), and high-risk human papillomavirus (hrHPV) detection concurrently. Patients with positive results were recommended for colposcopy, and biopsy diagnosis was regarded as the “gold standard.” We compared the test efficiencies of the 3 methods and compared the efficiency and accuracy of the TCT in our hospital and the “2-cancer screening” project in Hubei Province during the same period. Results: Among 20,574 women, the positive rates of DNA ploidy analysis, cytology, and hrHPV testing were 4.01%, 4.71%, and 16.28%, respectively. The sensitivities of these methods for screening for grade 2+ cervical intraepithelial neoplasia were 0.70, 0.68, and 0.96, and their specificities were 0.79, 0.82, and 0.45, respectively. On comparing DNA ploidy analysis with the TCT, there was no significant difference in the sensitivity, specificity, positive predictive value, negative predictive value, and missed diagnosis rate. In opportunistic screening and the 2-cancer screening project, the positive rates of cytology were 4.71% and 2.87%, respectively. And the efficiency and accuracy of the TCT in opportunistic screening were higher than in the 2-cancer screening project. Conclusion: Therefore, DNA ploidy analysis, which is of low-cost and does not depend on cytopathologists, can replace cytology and be applied in large-scale population screening for cervical cancer.

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