Events [n (%)] observed between baseline date and end of follow-up by CD4 group and overall.

“Low CD4” group stratified to subgroups. All numbers refer to the first event observed during follow-up (in case of multiple events/individual).对低CD4（Low CD4）组进行亚组分层。所有数值均指随访期间观察到的首次事件（若单个研究对象存在多次事件的情况）。