codebook BMISC

replace BMISC =.a if BMISC == 98

replace BMISC =.b if BMISC == 99

summarize BMISC

gen Weight_kg = PHDKGWBC

replace Weight_kg =.a if Weight_kg == 997

replace Weight_kg =.b if Weight_kg == 998

replace Weight_kg =.c if Weight_kg == 999

summarize Weight_kg

gen Height_cm = PHDCMHBC

replace Height_cm =.a if Height_cm == 997

replace Height_cm =.b if Height_cm == 998

replace Height_cm =.c if Height_cm == 999

summarize Height_cm