Open Access Research article

Predictors of consistent condom use based on the Information-Motivation-Behavioral Skills (IMB) model among female sex workers in Jinan, China

Hua Zhang1, Meizhen Liao2, Xijuan Nie3, Rongjian Pan3, Chuangxin Wang3, Shiman Ruan4, Changqing Zhang4, Xiaorun Tao2, Dianmin Kang2* and Baofa Jiang1*

Author Affiliations

1 Department of Epidemiology and Biostatistics, School of Public Health, Shandong University, Jinan, Shandong Province 250012, China

2 Institute for AIDS/STD Control and Prevention, Shandong Province CDC, Jinan, Shandong Province 250014, China

3 Institute for AIDS/STD Control and Prevention, Licheng District CDC, Jinan, Shandong Province 250100, China

4 Institute for AIDS/STD Control and Prevention, Jinan City CDC, Jinan, Shandong Province 250000, China

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BMC Public Health 2011, 11:113  doi:10.1186/1471-2458-11-113

Published: 17 February 2011



Female commercial sex workers (FSWs) are at high risk of human immunodeficiency virus (HIV) transmission in China. This study was designed to examine the predictors of condom use with clients during vaginal intercourse among FSWs based on the Information-Motivation-Behavioral Skills (IMB) model and to describe the relationships between IMB model constructs.


A cross-sectional study was conducted in Jinan of Shandong Province, from May to October, 2009. Participants (N = 432) were recruited using Respondent-Driven Sampling (RDS). A self-administered questionnaire was used to collect data. Structural equation modeling was used to assess the IMB model.


A total of 427 (98.8%) participants completed their questionnaires. Condom use was significantly predicted by social referents support, experiences with and attitudes toward condoms, self-efficacy, and health behaviors and condom use skills. Significant indirect predictors of condom use mediated through behavioral skills included HIV knowledge, social referents support, and substance use.


These results suggest that the IMB model could be used to predict condom use among Chinese FSWs. Further research is warranted to develop preventive interventions on the basis of the IMB model to promote condom use among FSWs in China.