BIOFHTAPCTRM (V441) reports the respondent's height-for-age as a percent of the median height for a reference population of the same age and sex. For this variable, the reference population was developed by the U.S. Centers for Disease Control.
The reference standard contains data for children up to age 18. For all women age 18 and over, the value of 215 months (17 years, 11 months) is used, based on the assumption that women are fully grown by age 18.
HEIGHTFEM (V438) reports the respondent's length or height as measured by DHS personnel.
The related variable BIOFHTAPCT (V439) reports the respondent's height-for-age percentile relative to smoothed percentile growth charts by age and sex, for the same reference population.