Van Huy Nguyen, P Dunne Michael, Debattista Joseph
a Department of Health Management, Institute for Preventive Medicine and Public Health , Hanoi Medical University , Hanoi , Vietnam.
b School of Public Health and Social Work, Faculty of Health , Queensland University of Technology , Brisbane , Australia.
Cult Health Sex. 2016;18(3):321-36. doi: 10.1080/13691058.2015.1084375. Epub 2015 Sep 28.
HIV risk in vulnerable groups such as itinerant male street labourers is often examined via a focus on individual determinants. This study provides a test of a modified Information-Motivation-Behavioral Skills (IMB) model to predict condom use behaviour among male street workers in urban Vietnam. In a cross-sectional survey using a social mapping technique, 450 male street labourers from 13 districts of Hanoi, Vietnam were recruited and interviewed. Collected data were first examined for completeness; structural equation modelling was then employed to test the model fit. Condoms were used inconsistently by many of these men, and usage varied in relation to a number of factors. A modified IMB model had a better fit than the original IMB model in predicting condom use behaviour. This modified model accounted for 49% of the variance, versus 10% by the original version. In the modified model, the influence of psychosocial factors was moderately high, whilst the influence of HIV prevention information, motivation and perceived behavioural skills was moderately low, explaining in part the limited level of condom use behaviour. This study provides insights into social factors that should be taken into account in public health planning to promote safer sexual behaviour among Asian male street labourers.
诸如流动男性街头劳动者等弱势群体中的艾滋病病毒感染风险，通常通过关注个体决定因素来进行研究。本研究对一种改良的信息-动机-行为技能（IMB）模型进行了检验，以预测越南城市男性街头工作者的避孕套使用行为。在一项采用社会绘图技术的横断面调查中，招募并采访了来自越南河内13个区的450名男性街头劳动者。首先对收集到的数据进行完整性检查；然后采用结构方程模型来检验模型拟合度。这些男性中有许多人使用避孕套的情况并不稳定，而且使用情况因多种因素而异。在预测避孕套使用行为方面，改良后的IMB模型比原始IMB模型拟合度更好。这个改良模型解释了49%的方差变异，而原始模型为10%。在改良模型中，心理社会因素的影响程度适中偏高，而艾滋病病毒预防信息、动机和感知行为技能的影响程度适中偏低，这在一定程度上解释了避孕套使用行为水平有限的原因。本研究为公共卫生规划中应考虑的社会因素提供了见解，以促进亚洲男性街头劳动者的更安全性行为。
