Dear all,
i am trying to impute some 75 continuous variables with 500 observations using mi impute command. the code i use is below. my naive question is how long it will take. performing chained iterations has been running for more than 30 minutes now. is that normal? or it has to do with the capacity of my computer ( i am using a macbok pro, 2.6 GHz intel core i5, 8gb RAM)
Code:
mi set flong
mi register imputed lnbodyfatbmi lnwaisthipratio lnsalivaryamylaseuml lnplasmasalivaryamyalseul lntotalamyalseul lnpancreaticamylaseul lnalbumin lnalkalinephosphatasealp lnaltgpt lnastgot lncpeptideofinsulin lncalcium lnchloride lncholesterol lncorrectedcalcium lncreatinekinase lnestradiol lnferritin lnfolateserum lnfreethyroxine lnfreetriiodothyronine lnggt lnglucose lnhba1c lnhco3 lnhdl lnhomocysteine lninsulin lniron lnldl lnmagnesium lnphosphorus lnpotasium lnserumcreatinine lnSHBG lnsodium lntestosterone lnTSH lntotalbilirubin lnTIBC lntotalprotein lntriglycerides lnureanitrogen lnuricacid lnvitd lnvitaminb12 lnbodyfatbmr lnbodyfatfat lnbodyfatfatmass lnbodyfatffm lnbodyfatheight lnbodyfatleftarmfat lnbodyfatleftarmfatmass lnbodyfatleftarmffm lnbodyfatleftarm lnbodyfatleftlegfat lnbodyfatleftlegfatmass lnbodyfatleftlegffm lnbodyfatleftleg lnbodyfatrightarmfat lnbodyfatrightarmfatmass lnbodyfatrightarmffm lnbodyfatrightarm lnbodyfatrightlegfat lnbodyfatrightlegfatmass lnbodyfatrightlegffm lnbodyfatrightleg lnbodyfattbw lnbodyfattrunkfat lnbodyfattrunkfatmass lnbodyfattrunkffm lnbodyfatweight lnbodyfatwholebody lnwaist lnhip lndiastolicbp lnsystolicbp lnpulse
mi describe
mi impute chained (regress) lnbodyfatbmi lnwaisthipratio lnsalivaryamylaseuml lnplasmasalivaryamyalseul lntotalamyalseul lnpancreaticamylaseul lnalbumin lnalkalinephosphatasealp lnaltgpt lnastgot lncpeptideofinsulin lncalcium lnchloride lncholesterol lncorrectedcalcium lncreatinekinase lnestradiol lnferritin lnfolateserum lnfreethyroxine lnfreetriiodothyronine lnggt lnglucose lnhba1c lnhco3 lnhdl lnhomocysteine lninsulin lniron lnldl lnmagnesium lnphosphorus lnpotasium lnserumcreatinine lnSHBG lnsodium lntestosterone lnTSH lntotalbilirubin lnTIBC lntotalprotein lntriglycerides lnureanitrogen lnuricacid lnvitd lnvitaminb12 lnbodyfatbmr lnbodyfatfat lnbodyfatfatmass lnbodyfatffm lnbodyfatheight lnbodyfatleftarmfat lnbodyfatleftarmfatmass lnbodyfatleftarmffm lnbodyfatleftarm lnbodyfatleftlegfat lnbodyfatleftlegfatmass lnbodyfatleftlegffm lnbodyfatleftleg lnbodyfatrightarmfat lnbodyfatrightarmfatmass lnbodyfatrightarmffm lnbodyfatrightarm lnbodyfatrightlegfat lnbodyfatrightlegfatmass lnbodyfatrightlegffm lnbodyfatrightleg lnbodyfattbw lnbodyfattrunkfat lnbodyfattrunkfatmass lnbodyfattrunkffm lnbodyfatweight lnbodyfatwholebody lnwaist lnhip lndiastolicbp lnsystolicbp lnpulse =  lnage lnheight  lnfastingdurationinminutes lnsalivaryamylas_newuml, add(250) rseed(100)
note: missing-value pattern is monotone; no iteration performed
thanks