Informal confidential voting interview methods and temporal changes in reported sexual risk behaviour for HIV transmission in sub-Saharan Africa
Informal confidential voting interview methods and temporal changes in reported sexual risk behaviour for HIV transmission in sub-Saharan Africa
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DOI：
10.1136/sti.2004.012088
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发表时间：
2004-12-01
影响因子：
3.6
通讯作者：
Nyamukapa, C
中科院分区：
文献类型：
--
作者：
Gregson, S;Mushati, P;Nyamukapa, C
目标：需要可靠的性行为趋势数据来评估撒哈拉以南非洲的艾滋病毒干预措施，但由于社会期望偏见等原因，很难获得这些数据。本文的目的是评估非正式保密投票访谈(ICVI)的使用是否与比传统访谈方法更多地报告被社会禁止的艾滋病毒感染行为风险因素有关。方法：在津巴布韦马尼卡兰进行的一项大规模、纵向、基于人群的调查的前两轮中，比较ICVI中艾滋病毒感染风险行为报告的变化与面对面访谈(FTFI)的变化。对可能导致ICVI效果变化的因素进行检查，包括响应误差和社会合意性的时间变化，以及影响检测方法差异的统计能力的因素--即风险行为患病率和样本量的减少。结果：在ICVI访谈中，艾滋病毒相关风险行为的改进报告在第二轮调查中不像第一轮调查中那么明显，特别是对于报告频率较低的行为。在两轮调查之间，报告的艾滋病毒相关危险行为水平和样本量都有所下降。ICVI访谈的回答错误程度高于FTFI访谈，但不会随着时间的推移而改变。结论：ICVI访谈可以减少HIV相关危险行为数据中的社会期望偏差。随着时间的推移，偏差净减少的变化程度和方向仍不确定，并将取决于当地情况。
Objectives: Reliable data on sexual behaviour trends are needed to evaluate HIV interventions in sub-Saharan Africa but are difficult to obtain due inter alia to social desirability bias. The objective of this paper is to assess whether the use of informal confidential voting interviews (ICVI) was associated with greater reporting of socially proscribed behavioural risk factors for HIV infection than were conventional interviewing methods.Methods: Comparison of changes in reports of risk behaviours for HIV infection in ICVI versus face to face interviews (FTFIs) between the first two rounds of a large scale, longitudinal, population based survey in Manicaland, Zimbabwe. Examination of factors that could contribute to observed changes in the effect of ICVI, including temporal changes in response error and social desirability, and factors affecting statistical power to detect differences between methods-that is, reductions in the prevalence of risk behaviours and sample size.Results: Enhanced reporting of HIV associated risk behaviours in ICVI interviews was not so apparent in the second round as in the first round of the survey, particularly for less frequently reported behaviours. levels of reported HIV associated risk behaviour and sample sizes both declined between the two survey rounds. The level of response error was higher in ICVI interviews than in FTFI interviews but did not alter over time.Conclusion: ICVI interviews can reduce social desirability bias in data on HIV associated risk behaviours. The extent and direction of change in net reduction in bias over time remains uncertain and will depend on local circumstances.