Convert fetal ultrasound measurements to INTERGROWTH z-scores/centiles (generic)

Source: R/standard_igfet.R

Convert fetal ultrasound measurements to INTERGROWTH z-scores/centiles (generic)

igfet_value2zscore(
  gagedays,
  val,
  var = c("hccm", "bpdcm", "ofdcm", "accm", "flcm")
)

igfet_value2centile(
  gagedays,
  val,
  var = c("hccm", "bpdcm", "ofdcm", "accm", "flcm")
)

Arguments

gagedays

gestational age in days

val

the value(s) of the anthro measurement to convert

var

the name of the measurement to convert ("hccm", "bpdcm", "ofdcm", "accm", "flcm")

References

International standards for fetal growth based on serial ultrasound measurements: the Fetal Growth Longitudinal Study of the INTERGROWTH-21st Project Papageorghiou, Aris T et al. The Lancet, Volume 384, Issue 9946, 869-879

Examples

# get centile for child at 100 gestational days with 11 cm head circumference
igfet_hccm2centile(100, 11)
#> [1] 93.39812