Hello,
I need your advice on a repeated measure analysis (Baseline-Endline) using xtgee. This is my first time of applying GEE. The participants are subdivided into pregnant and non-pregnant women (75% to 25% ratio). Questions were designed in a way that some are general while some depend on who is pregnant and not pregnant.
My questions are as follows:
1. In a situation where there is attrition between baseline and endline, do I need to drop those who were lost to follow-up? How does xtgee handle them if they are not dropped?
2. In a situation where some non-pregnant women at baseline(responded to questions meant for non-pregnant and general questions) became pregnant at endline (responded to questions meant for pregnant women and general questions), is it ok to ensure that only women with consistent pregnancy status are involved in the model or how does xtgee handles it if consistency of pregnancy status is not made a requirement to be included in the model. I was thinking that they should be left out since they no longer have repeated measures for the questions they responded to at the baseline but I am not sure of my line of thought.
The panel variable is at the individual level.
thanks.
I need your advice on a repeated measure analysis (Baseline-Endline) using xtgee. This is my first time of applying GEE. The participants are subdivided into pregnant and non-pregnant women (75% to 25% ratio). Questions were designed in a way that some are general while some depend on who is pregnant and not pregnant.
My questions are as follows:
1. In a situation where there is attrition between baseline and endline, do I need to drop those who were lost to follow-up? How does xtgee handle them if they are not dropped?
2. In a situation where some non-pregnant women at baseline(responded to questions meant for non-pregnant and general questions) became pregnant at endline (responded to questions meant for pregnant women and general questions), is it ok to ensure that only women with consistent pregnancy status are involved in the model or how does xtgee handles it if consistency of pregnancy status is not made a requirement to be included in the model. I was thinking that they should be left out since they no longer have repeated measures for the questions they responded to at the baseline but I am not sure of my line of thought.
The panel variable is at the individual level.
thanks.
