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  • why can't i use estat phtest with tvc - what is the alternative?

    Code:
    stcox var1 var2 va3, tvc(i.gender) nohr
    gen insample2 =e(sample)
    drop if insample2 == 0 
    estat phtest, detail 
    
    stcox var1 var2 va3, schoenfeld(schoen*) scaledsch(scaled*) tvc(i.gender) nohr
    stphtest, rank detail
    For both methods it said 'post-estimation is not allowed after estimation with tvc(); scaledsch() may not be combined with option tvc()

    What is the alternative to created scaledsch to assess GOF for PH ?
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