Sociodemographic and Behavioral Characteristics by Genital Ulcer Etiology.

Not all cells sum to N due to missing data.+STI-related Etiology indicates ulcers that were associated with HSV or T. pallidum by serology or PCR.*Comparisons by group by Chi-square test, or by Fisher's exact test when cell size Recall period for behavioral variables are past 6 months unless stated otherwise and are visit-matched to the visit at which GUD was detected.∧Ulcer location not mutually exclusive.由于存在缺失数据，并非所有单元格的数值总和均为N。【注+】与性传播感染（Sexually Transmitted Infection, STI）相关的病因学分类，指经血清学或聚合酶链式反应（Polymerase Chain Reaction, PCR）检测证实与单纯疱疹病毒（Herpes Simplex Virus, HSV）或梅毒螺旋体（Treponema pallidum, T. pallidum）相关的溃疡。【注*】组间比较采用卡方检验（Chi-square test）；当单元格样本量不足时，采用费希尔精确检验（Fisher's exact test）。行为变量的回顾周期默认设为过去6个月，除非另有说明，且回顾周期与检测到生殖器溃疡病（Genital Ulcer Disease, GUD）的就诊相匹配。∧溃疡部位不具有互斥性。