International fetal size standards in early pregnancy: table of z-scores of crown-rump length based on gestation age in weeks and days

International fetal size standards in early pregnancy: table of z-scores of crown-rump length based on gestation age in weeks and days

Usage

crl_gestage_sd

Format

A tibble with 336 rows and 4 columns:

week

Gestational age - weeks

day

Gestation age - days

sd

z-scores (-3SD, -2SD, -1SD, 0, 1SD, 2SD, 3SD)

crl

Crown-rump length in millimetres

Source

Napolitano R, Dhami J, Ohuma EO, Ioannou C, Conde-Agudelo A, Kennedy SH et al. Pregnancy dating by fetal crown-rump length: a systematic review of charts. BJOG 2014, 121(5):556-5.

Examples

crl_gestage_sd
#> # A tibble: 336 × 4
#>    week  day   sd    crl  
#>    <chr> <chr> <chr> <chr>
#>  1 8     2     -3SD  4.1  
#>  2 8     2     -2SD  7.6  
#>  3 8     2     -1SD  11.1 
#>  4 8     2     0     14.6 
#>  5 8     2     1SD   18.1 
#>  6 8     2     2SD   21.6 
#>  7 8     2     3SD   25.1 
#>  8 8     3     -3SD  5.3  
#>  9 8     3     -2SD  8.9  
#> 10 8     3     -1SD  12.5 
#> # … with 326 more rows