Meihua Jin, Xiaojuan Zhu, Zhongrong Yang, Xiaoqi Liu, Jing Li, Zhenqian Wu
HIV subtypes and molecular transmission characteristics among elderly HIV-infected individuals aged 50 and above: a cross-sectional study in Huzhou City, Eastern China
BMJ open
generality latent variable modeling individual differences development time demonstrated particular emphasis randomized intervention studies first brief overview given biostatistica l psychometric approaches repeated measures analysis second generality psychometric approach indicated nonstandard models third multiplepopulation analysis approach proposed estimation treatment effects approach clearly describes treatment effect development differs normative controlgroup development framework allows interactions treatment initial status effects development finally approach estimation power detect treatment effects framework demonstrated illustrations power calculations carried artificial data varying sample sizes number timepoints treatment effect sizes real data used illustrate analysis strategies power calculations modeling extensions discussed