get_reference() function selects the D-score reference
get_reference(population = "phase1", references = dscore::builtin_references)
A string describing the population. Currently supported
"phase1". The default is
"phase1", in sync
with the default
key = "gsed".
data.frame with the same structure
builtin_references. The default is to use
data.frame with the LMS reference values.
No references for population
The function will silently rewrite
population = "gsed"
into to the
population = "gsed".
"dutch" reference was published in Van Buuren (2014)
"gcdg" was calculated from 15 cohorts with direct
observations (Weber, 2019).
"phase1" references were calculated from the GSED Phase 1 validation
data (GSED-BGD, GSED-PAK, GSED-TZA) cover age range 2w-3.5 years. The
age range 3.5-5 yrs is linearly extrapolated and are only indicative.
Van Buuren S (2014). Growth charts of human development. Stat Methods Med Res, 23(4), 346-368.
Weber AM, Rubio-Codina M, Walker SP, van Buuren S, Eekhout I, Grantham-McGregor S, Caridad Araujo M, Chang SM, Fernald LCH, Hamadani JD, Hanlon A, Karam SM, Lozoff B, Ratsifandrihamanana L, Richter L, Black MM (2019). The D-score: a metric for interpreting the early development of infants and toddlers across global settings. BMJ Global Health, BMJ Global Health 4: e001724. https://gh.bmj.com/content/bmjgh/4/6/e001724.full.pdf.