Background: Commercial female sex workers (CFSWs) are considered a high-risk group for HIV/AIDs. The prevalence of HIV/AIDs trends to increase among those groups also in Thailand. An adequate perception of the degree to which one is at risk of having HIV is necessary for behavioral change and of safe behaviors. HIV/AIDs risk perception among CFSWs was needed to reduce HIV/AIDs infection. Methods: A cross-sectional study was conducted among 141 CFSWs in Bangkok, Thailand. Participants were selected using convenient and purposive sampling methods for January to October 2019. Self-access questionnaire was used for collecting data with the reliability testing of 0.82. Logistic regression employed to identify adjusted odd ratio between demographic data, sexual behaviors and HIV/AIDs risk perception, p-value less than 0.05 was considered statistically significant. Results: 51.77% of CFSWs perceived themselves at high risk for HIV/AIDs infection. Most CFSWs reported that they did not consistently use condom (57.45%), factors associated with perception risk of HIV/AIDs including education level (adjusted OR = 2.23, 95% CI = 1.07 - 4.54), knowledge of HIV and STDs (adjusted OR = 3.65 and 3.22. 95% CI = 1.89 - 3.91), Condom use (adjusted OR = 2.56, 95% CI = 1.05 - 2.90) years engaged in sex work, age of initiating in sex work, frequency of sex work in the last month and unplanned sex work were significant with risk perception of HIV/AIDs (adjusted OR = 3.33, 2.71, 2.67, 2.56 and 95% CI = 1.99 - 3.84, 1.72 - 3.32, 1.29 - 3.12, 1.05 - 2.78 respectively), and had HIV/STDs test (adjusted OR = 3.22, 95% CI = 2.11 - 3.95). Other used illicit drugs by injection, smoking and alcohol consumption had a strong association with the high perception of HIV/AIDs among CFSWs. Conclusion: Majority of CFSWs with risky sexual behaviors had a high HIV/AIDs risk perception. Effective educational programmes are necessary to enable CFSWs to correctly assess their own HIV/AIDs risk and change risk behaviors based on self-assessment of actual risk.
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