Page Last Updated: May 14, 2026

Growth🔗

Table Name ph_ch_anthro
Construct Growth
Study Visits V02, V03, V04, V06, V08
Administration Child-specific: Yes
Respondent: N/A
Method: HBCD Study Staff, in person (5 min estimated duration)
Quality Control
  • Monitoring of data dashboard for variable missingness
  • Detection of possible coding errors
  • Review of data consistency
Data Warning â–¸

Z-Scores Excluded
Because dates of birth are jittered and calculated chronologic and adjusted ages are ±7 days, we do not provide z-scores in the current data release. Further, we do NOT recommend calculating z-scores using V02 data. Caution is recommended when calculating Z-scores using data from subsequent visits. Future data releases will have z-scores calculated with age in days for investigators wanting to compare to normative growth metrics.

Range Checks For Growth
Range checks were performed to identify and exclude extreme out-of-range values. Values outside of the following valid ranges were converted to 'n/a'. Note that these ranges are not age-specific, i.e. the same ranges were used for all visits.

Name ph_ch_anthro_len_001__03 ph_ch_anthro_head_001__03 ph_ch_anthro_wei_001__03
Description Average length (in cm) Head circumference (cm) Average weight (in kg)
Valid Range 30 to 130 cm 25 to 55 cm 0.5 to 30 kg

Sex-Specific Birthweight for Gestational Age
Sex-specific birthweight for gestational age centiles and z-scores will be calculated in future data releases using Intergrowth curves (Villar et al. 2014). In the meantime, data users can use these growth curves or ones of their choice to calculate centiles and small/large for gestational age variables.

Please review the Known Issues & Pending Updates page for updates that may affect data use.

Instrument Details🔗

Growth is a standard direct measure of child growth, including height or length (in cm), weight (in kg), and head circumference (cm). In older children, it will also include abdominal circumference (cm).

References🔗

Villar, J., Cheikh Ismail, L., Victora, C. G., Ohuma, E. O., Bertino, E., Altman, D. G., Lambert, A., Papageorghiou, A. T., Carvalho, M., Jaffer, Y. A., Gravett, M. G., Purwar, M., Frederick, I. O., Noble, A. J., Pang, R., Barros, F. C., Chumlea, C., Bhutta, Z. A., Kennedy, S. H., & International Fetal and Newborn Growth Consortium for the 21st Century (INTERGROWTH-21st). (2014). International standards for newborn weight, length, and head circumference by gestational age and sex: the Newborn Cross-Sectional Study of the INTERGROWTH-21st Project. Lancet, 384(9946), 857–868. https://doi.org/10.1016/S0140-6736(14)60932-6