Dear experts,

I want to conduct meta-regression to examine whether age and sex have an effect on the main results. And I use Linear Model button on the SDM-PSI V6.21 GUI.
Here I have a problem: If I want to examine the effect of age, should I set age as 1 and sex as 0? Or just set age as 1 (Age=mi_lm age,0+1+0+0+0,50,,5)?

Thanks very much.

Xiaoying