Todd J, Cremin I, McGrath N, Bwanika J-B, Wringe A, Marston M, Kasamba I, Mushati P, Lutalo T, Hosegood V, Zaba B
Medical Research Council/Uganda Virus Research Institute, Uganda Research Unit on AIDS, Entebbe, Uganda.
Sex Transm Infect. 2009 Apr;85 Suppl 1(Suppl_1):i72-80. doi: 10.1136/sti.2008.033985.
To compare reported numbers of sexual partners in Eastern and Southern Africa.
Sexual partnership data from four longitudinal population-based surveys (1998-2007) in Zimbabwe, Uganda and South Africa were aggregated and overall proportions reporting more than one lifetime sexual partner calculated. A lexis-style table was used to illustrate the average lifetime sexual partners by site, sex, age group and birth cohort. The male-to-female ratio of mean number of partnerships in the last 12 months was calculated by site and survey. For each single year of age, the proportion sexually active in the past year, the mean number of partners in the past year and the proportion with more than one partner in the past year were calculated.
Over 90% of men and women between 25 and 45 years of age reported being sexually active during the past 12 months, with most reporting at least one sexual partner. Overall, men reported higher numbers of lifetime sexual partners and partners in the last year than women. The male-to-female ratio of mean partnerships in the last year ranged from 1.41 to 1.86. In southern African cohorts, individuals in later birth cohorts reported fewer sexual partners and a lower proportion reported multiple partnerships compared with earlier birth cohorts, whereas these behavioural changes were not observed in the Ugandan cohorts. Across the four sites, reports of sexual partnerships followed a similar pattern for each sex.
The longitudinal results show that reductions in the number of partnerships were more evident in southern Africa than in Uganda.
比较东非和南非报告的性伴侣数量。
汇总来自津巴布韦、乌干达和南非的四项基于人群的纵向调查（1998 - 2007年）中的性伴侣关系数据，并计算报告有不止一个终身性伴侣的总体比例。使用一种类似列线图的表格来展示按地点、性别、年龄组和出生队列划分的平均终身性伴侣数量。按地点和调查计算过去12个月中伴侣关系平均数的男女比例。对于每一岁，计算过去一年中有性行为的比例、过去一年中伴侣的平均数以及过去一年中有不止一个伴侣的比例。
25至45岁的男性和女性中，超过90%报告在过去12个月中有性行为，大多数报告至少有一个性伴侣。总体而言，男性报告的终身性伴侣数量和过去一年中的伴侣数量高于女性。过去一年中伴侣关系平均数的男女比例在1.41至1.86之间。在南部非洲队列中，与较早出生队列相比，较晚出生队列的个体报告的性伴侣较少，报告有多个伴侣的比例也较低，而在乌干达队列中未观察到这些行为变化。在这四个地点，每种性别的性伴侣关系报告模式相似。
纵向结果表明，南部非洲性伴侣数量的减少比乌干达更为明显。
