I am trying to compare how transportation supplement works for different social groups. For example, when the groups of abled-body and people with chronic disease are compared, will there be an issue of selection bias?
I am trying to compare how transportation supplement works for different social groups. For example, when the groups of abled-body and people with chronic disease are compared, will there be an is ...
2021年8月19日
3個回覆,39個月前
Like