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Post a reply: Why do I need to adjust for age and sex of children again if z score calculation already involved gender and sex in its calculation?

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Hello,

I have already z score using WHO anthropometric survey analyzer.

One question arised was that why do I need to still control for gender and age in my regression again if z-score calculation already involved sex of children and their age (in months).

Can you help clarify on this issue?

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