International Newborn Size Standards: table of z-score for head circumference-for-gestational age for infants

Usage

hc_gestage_term_sd

Format

A tibble with 980 rows and 5 columns:

week: Gestational age weeks component
day: Gestational age days component
sex: Sex; 1 = male; 2 = female
sd: Standard deviation (z-score): -3, -2, -1, 0, 1, 2, 3
hc: Head circumference in centimetres

Source

Villar J, Giuliani F, Fenton TR, Ohuma EO, Ismail LC, Kennedy SH et al. INTERGROWTH-21st very preterm size at birth reference charts. Lancet 2016, 387(10021):844-45.

Examples

hc_gestage_term_sd
#> # A tibble: 980 × 5
#>    week  day     sex sd    hc   
#>    <chr> <chr> <dbl> <chr> <chr>
#>  1 33    0         1 -3SD  26.5 
#>  2 33    0         1 -2SD  28.1 
#>  3 33    0         1 -1SD  29.5 
#>  4 33    0         1 0     30.9 
#>  5 33    0         1 1SD   32.3 
#>  6 33    0         1 2SD   33.8 
#>  7 33    0         1 3SD   35.5 
#>  8 33    1         1 -3SD  26.6 
#>  9 33    1         1 -2SD  28.2 
#> 10 33    1         1 -1SD  29.6 
#> # … with 970 more rows