International Newborn Size Standards: table of z-score for weight-length ratio-for-gestational age for infants

Usage

wlr_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
wlr: Weight-length ratio in kilogram/metre

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

wlr_gestage_term_sd
#> # A tibble: 980 × 5
#>    week  day     sex sd    wlr  
#>    <chr> <chr> <dbl> <chr> <chr>
#>  1 33    0         1 -3SD  2.25 
#>  2 33    0         1 -2SD  3.00 
#>  3 33    0         1 -1SD  3.74 
#>  4 33    0         1 0     4.48 
#>  5 33    0         1 1SD   5.23 
#>  6 33    0         1 2SD   5.97 
#>  7 33    0         1 3SD   6.71 
#>  8 33    1         1 -3SD  2.33 
#>  9 33    1         1 -2SD  3.07 
#> 10 33    1         1 -1SD  3.81 
#> # … with 970 more rows