Table 1 Descriptive table for the NINFEA population under study (N = 141)
From: Birthweight DNA methylation signatures in infant saliva
Characteristics | N or mean | % or SD |
|---|---|---|
Maternal pre-pregnancy BMIa | 22 | 3.0 |
Missing values | 1 | – |
Maternal age at delivery (years) | 35 | 4.1 |
Maternal education | ||
Low/medium (no university degree) | 38 | 27% |
High (university degree or higher) | 102 | 72% |
Missing values | 1 | 1% |
Parity | ||
First born | 45 | 32% |
Non first born | 92 | 65% |
Missing values | 4 | 3% |
Gestational duration (weeks) | ||
< 37 weeks | 7 | 5% |
37+ weeks | 134 | 95% |
Child sex | ||
Female | 61 | 43% |
Male | 80 | 57% |
Birthweight (grams) | 3242 | 447.1 |
Low (< 2500 g) | 5 | 3.5% |
Medium (2500–4000 g) | 128 | 90.8% |
High (> 4000 g) | 8 | 5.7% |
Small-for-gestational-ageb | ||
Yes | 22 | 16% |
No | 119 | 84% |
Age at saliva sampling (months) | 10.78 | 2.2 |