This variable is not available for any of the currently selected samples.
HWHTHOWMEAS (HW15) reports whether the height of children under age 5 was measured when they were lying down or standing up. According to the DHS Recode Manuals:
Along with universe differences, HWHTHOWMEAS (HW15) differs across samples in response categories. Some samples include the response category "not measured," while other presumably placed unmeasured children in the "missing" category.
Comparability - Standard DHS
HWHTHOWMEAS (HW15) is a standard variable in the DHS for Phase II forward.