Characteristics of the study participants.

The table shows demographic characteristics of the study groups [mean (range)]. All HIV infected participants in this study were on cART and virologically suppressed (VL<50 copies/ml) at the time of enrollment. Participants were enrolled if they were between 18–55 years of age and a current tobacco smoker based on the survey questionnaire. Participants were excluded for any medical disorders and illicit drug use. n.a – not available.

本表格呈现了本研究各组受试者的人口学特征[均值（范围）]。本研究纳入的所有人类免疫缺陷病毒（HIV）感染者在入组时均已接受联合抗反转录病毒治疗（cART），且病毒学状态得到抑制，即病毒载量（VL）<50拷贝/毫升。受试者入组需满足以下条件：年龄介于18至55岁之间，且经调查问卷确认目前为烟草吸烟者。本研究排除合并任何内科疾病或存在违禁药物滥用行为的受试者。注：n.a. 代表不可用（not available）。