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Table 1 Variable definitions and sources

From: Non-linear association of low birthweight with risk factors including women’s BMI: evidence from an international comparison

Variable

Definition

Source

R_LBW

Number of newborns weighing less than 2,500 g divided by the total number of live births (%)

WB

UNICEF

BMI

Mean of the body mass index (BMI) of women (kg/m2)

WHO

GDP

Real GDP per capita (US$)

PWT

EMPLOYEE

Number of female wage and salaried workers, self-employed workers, and self-employed workers with employees divided by female working-age population (%)

WB

WEAK_LABOR

Number of female own-account workers and contributing family workers divided by total female employment (%)

WB

BIRTH_STAFF

Births attended by skilled health staff divided by total births (%)

WB

YOUNG_MOTHER

Proportion of births among adolescent mothers aged 15–19 (%)

WB

  1. WB stands for the World Bank Open Data (https://data.worldbank.org), and PWT for the Penn World Table (https://www.rug.nl/ggdc/productivity/pwt/?lang=en). We used age-adjusted mean BMI data available from the WHO Data Bank (https://www.who.int/data/gho/data/themes/topics/topic-details/GHO/body-mass-index). The differences in sample sizes across variables are due to data availability constraints in the original sources, as some countries did not consistently report certain indicators