Convert postnatal growth measurements for preterm infants to INTERGROWTH z-scores/centiles

igprepost_lencm2zscore(pmagedays, lencm, sex = "Female")

igprepost_wtkg2zscore(pmagedays, wtkg, sex = "Female")

igprepost_hcircm2zscore(pmagedays, hcircm, sex = "Female")

igprepost_lencm2centile(pmagedays, lencm, sex = "Female")

igprepost_wtkg2centile(pmagedays, wtkg, sex = "Female")

igprepost_hcircm2centile(pmagedays, hcircm, sex = "Female")

Arguments

pmagedays: postmenstrual age in days
lencm: length(cm) measurement(s) to convert
sex: "Male" or "Female"
wtkg: weight (kg) measurement(s) to convert
hcircm: head circumference (cm) measurement(s) to convert

References

Postnatal growth standards for preterm infants: the Preterm Postnatal Follow-up Study of the INTERGROWTH-21st Project. Villar J, Giuliani F, Bhutta ZA, et al. Lancet Glob Health 2015; 3: e681–91.

Examples

igprepost_lencm2zscore(64 * 7, 64.68, sex = "Female")
#> [1] -0.001981459