Calculate gestational weight gain-for-gestational age z-score and centile

Usage

calculate_gwg_gestage(gestage = NULL, baseline = NULL, current = NULL)

Arguments

gestage: Gestational age. Gestational age can be provided as a string with a format of weeks+days or as numeric of exact weeks in decimal format
baseline: Baseline weight in kilograms (up to 2 decimal places) in the first trimester of pregnancy (less than 14 weeks gestational age)
current: Weight at current visit in kilograms (up to 2 decimal places)

Value

A list of 3 elements containing 1) gestational weight gain in kilograms; 2) gestational weight gain-for-gestational age z-score; and, 3) gestational weight gain-for-gestational age centile.

Examples

calculate_gwg_gestage(gestage = "32+0", baseline = 60, current = 69.52)
#> [[1]]
#> [1] 9.52
#> 
#> [[2]]
#> [1] -7.296547
#> 
#> [[3]]
#> [1] 1.476238e-13
#>