Saxton Peter J W, Dickson Nigel P, Hughes Anthony J
a Department of Preventive and Social Medicine , AIDS Epidemiology Group, University of Otago , Dunedin , New Zealand.
AIDS Care. 2015;27(6):762-6. doi: 10.1080/09540121.2014.998615. Epub 2015 Jan 19.
Most HIV behavioural surveillance programmes for gay, bisexual and other men who have sex with men (MSM) sample from location-based (offline) or web-based (online) populations, but few combine these two streams. MSM sampled online have been found to differ demographically and behaviourally from those sampled offline, meaning trends identified in one system may not hold for the other. The aim was to examine trends among MSM responding to supplementary repeat online behavioural surveillance surveys who had not participated in offline surveillance earlier that year in the same city, to see whether trends were parallel, converged or diverged. We recruited a total of 1613 MSM from an Internet dating site in Auckland, New Zealand in 2006, 2008 and 2011 using identical questionnaires and eligibility criteria to offline surveillance. Condom use was stable over time, HIV testing rates rose, the proportion reporting over 20 recent male partners declined, and anal intercourse rates increased, consistent with trends in offline surveillance conducted concomitantly and reported elsewhere. Variant trends included greater stability in condom use with casual partners among online-recruited MSM, and a rise in regular fuckbuddy partnering not identified among offline-recruited MSM. Among MSM recruited online, the frequency of checking Internet dating profiles increased between 2008 and 2011. In conclusion, supplementary web-based behavioural surveillance among MSM generally corroborates trends identified in offline surveillance. There are however some divergent trends, that would have been overlooked if only one form of surveillance had been conducted. As MSM populations increasingly shift their socialising patterns online and diversify, multiple forms of HIV behavioural monitoring may be required.
大多数针对男同性恋者、双性恋者和其他与男性发生性行为者（MSM）的艾滋病毒行为监测项目，是从基于地点（线下）或基于网络（线上）的人群中抽样，但很少将这两种渠道结合起来。研究发现，在线抽样的男男性行为者在人口统计学和行为方面与线下抽样的男男性行为者存在差异，这意味着在一个系统中确定的趋势可能不适用于另一个系统。目的是研究在同一城市中，对当年早些时候未参与线下监测的补充性重复在线行为监测调查做出回应的男男性行为者中的趋势，以观察趋势是平行、趋同还是发散。2006年、2008年和2011年，我们使用与线下监测相同的问卷和资格标准，从新西兰奥克兰的一个互联网约会网站招募了总共1613名男男性行为者。随着时间的推移，避孕套的使用情况保持稳定，艾滋病毒检测率上升，报告近期有20多个男性伴侣的比例下降，肛交率上升，这与同时进行的线下监测趋势以及其他地方报告的趋势一致。不同的趋势包括在线招募的男男性行为者中，与临时伴侣使用避孕套的情况更稳定，以及定期炮友关系的增加，这在离线招募男男性行为者中未被发现。在在线招募的男男性行为者中，2008年至2011年间查看互联网约会资料的频率有所增加。总之，男男性行为者基于网络的补充行为监测总体上证实了线下监测中确定的趋势。然而，也存在一些不同的趋势，如果只进行一种形式的监测，这些趋势就会被忽视。随着男男性行为者群体越来越多地将社交模式转移到线上并使其多样化，可能需要多种形式的艾滋病毒行为监测。
