Table 1 Population demographic and pregnancy characteristics by case-control status: Mean (standard deviation) or n (%).
From: Non-targeted urinary metabolomics in pregnancy and associations with fetal growth restriction
Cases (N = 30) | Control (N = 30) | |
|---|---|---|
Matched variables | ||
Age (years) | 32.3 (6.4) | 32.9 (5.4) |
Race/ethnicity | ||
White | 18 (60.0) | 18 (60.0) |
Black | 6 (20.0) | 6 (20.0) |
Other (Asian, Hispanic) | 6 (20.0) | 6 (20.0) |
Pre-pregnancy body mass index (kg/m2) | 24.5 (5.9) | 25.4 (5.8) |
Gestational age at delivery (weeks) | 38.0 (0.9) | 38.5 (1.1) |
Non-matched variables | ||
Gravidity | ||
Missing | 1 | 0 |
0–1 previous pregnancy | 14 (48.3) | 17 (56.7) |
>1 previous pregnancy | 15 (51.7) | 13 (43.3) |
Parity | ||
Missing | 1 | 0 |
Nulliparous | 7 (24.1) | 10 (33.3) |
Parous | 22 (75.9) | 20 (66.7) |
Health insurance provider | ||
Private | 21 (70.0) | 25 (83.3) |
Public | 7 (23.3) | 5 (16.7) |
No insurance | 2 (6.7) | 0 |
Education level | ||
Missing | 0 | 1 |
Junior college/some college and below | 11 (37) | 8 (27.5) |
College graduate | 12 (40) | 12 (41.4) |
Some graduate school, professional school, or above | 7 (23.3) | 9 (31) |
Alcohol use during pregnancy | ||
None | 28 (93.3) | 29 (96.7) |
Some | 2 (6.7) | 1 (3.3) |
Tobacco use during pregnancy | ||
None | 26 (86.7) | 29 (96.7) |
Some | 4 (13.3) | 1 (3.3) |
Visit 1 gestational age (weeks) | 10.8 (2.3) | 10.9 (2.1) |
Visit 3 gestational age (weeks) | 25.5 (1.1) | 25.5 (0.9) |
Birthweight (kg) | 2.2 (0.3) | 3.2 (0.5) |
