The Utilization of Human Papillomavirus Testing for Cervical Cancer Screening in Thailand: A Comparison of Screening with and without Self-sampling Samples

Cervical cancer (CC) screening shifted from Pap-smear to human papillomavirus (HPV) testing HPV with and without a self-sampling HPV-test in Thailand. Few studies have reported the initial outcomes of such a transition. This study aims to explore CC screening rate, CC detection and compare the CC detection rate by HPV with and without self-sampling methods in Krabi, province. A retrospective study was conducted from 1st October 2023 to 30th September 2024. A total of 11,925 women's records were retrieved. Information on demographic, screening results and cancer diagnosis was retrieved from the Krabi provincial hospital. Different proportions of CC detections and self-test collection based on demographic features were tested using chi-square and Fisher's exact tests. Result: CC screening rate was 42.4%: 10,619 (89%) of women had an HPV test and 1,306 (11%) had a Pap-smear test. The screening rate was 30.2% in 2023 and 52.1% in 2024. With regard to age, occupation, and health insurance schemes there was a significant difference in the proportion of those taking the self- collection test. Religion showed non-significance difference in the proportion of self-sampling test in relation to religion. CC detection was 3% among women who underwent the Pap-smear test and 0.12% for those who performed the HPV test. There is a significant difference in CC detection between the HPV with and without a self-sampling test. CC screening with HPV testing, especially with self-sampling, showed a promising approach to increasing CC screening uptake in the population. The rate of CC detection through self-sampling was lower in the early years of implementation compared to non-self-sampling methods. Ensuring the correct performance of self-sampling should be carefully considered and monitored in the future.