Variable type | Variable | Specification | df |
---|---|---|---|
Demographics | Age at index | Continuous variable | 1 |
Income quintile | Five categories | 4 | |
Rurality | Binary: yes/no | 1 | |
Immigrant status | Three categories (non-immigrant, previous (over 10 years ago), recent (10 years or less) | 2 | |
Ethnicity | Three categories (South Asian, Chinese, Other) | 2 | |
Lifestyle | Pre-pregnancy BMI, kg/m2 (self-reported) | Continuous | 1-3 |
Lifetime Health history | Previous mental health condition | Binary: yes/no | 1 |
Previous cardiovascular disease | Binary: yes/no | Â | |
Prior pregnancy history | Parity | Five categories (0, 1, 2, 3, > 3) | 4 |
Gravidity | Four categories (1, 2, 3, > 3) | 3 | |
Previous GDM | Three categories: yes/no/NA | 2 | |
Previous gestational hypertension or preeclampsia | Three categories: yes/no/NA | 2 | |
Index pregnancy | 50 g oral glucose challenge test, mmol/L | Continuous | 1-3 |
GDM | Binary: yes/no | 1 | |
Preeclampsia | Binary: yes/no | 1 | |
Gestational hypertension | Binary: yes/no | 1 | |
Caesarean-section | Three categories: planned/emergency/no | 1 | |
Premature delivery | Binary: yes/no | 1 | |
Newborn | Birthweight | Continuous (for women with a multi-fetal birth, the child with the higher birthweight will be used) | 1 |
Large for gestational age (LGA) birthweight > 90th | Binary: yes/no (for women with a multi-fetal birth, any child with a record for LGA will be used) | 1 |