Table 2.
Maternal characteristics and pregnancy outcome in relation to maternal obesity class. Categorical variables N (%)
| Obesity class I | Obesity class II | Obesity class III | P-value | |
|---|---|---|---|---|
| Parity | 0.714 | |||
| Nulliparous | 96 (43.0) | 36 (46.8) | 21 (48.8) | |
| Multiparous | 127 (57.0) | 41 (53.2) | 22 (51.2) | |
| Smoking in pregnancy | 0.059 | |||
| No | 206 (93.2) | 72 (94.7) | 35 (83.3) | |
| Yes | 15 (6.8) | 4 (5.3) | 7 (16.7) | |
| Alcohol in first trimester | # | |||
| No/rarely | 223 (100.0) | 77 (100.0) | 43 (100.0) | |
| Yes | 0 (0.0) | 0 (0.0) | 0 (0.0) | |
| Pre-term (<37 weeks) | 0.046 | |||
| No | 209 (94.6) | 76 (100.0) | 38 (90.5) | |
| Yes | 12 (5.4) | 0 (0.0) | 4 (9.5) | |
| Post-term (≥42 weeks) | 0.993 | |||
| No | 206 (93.2) | 71 (93.4) | 39 (92.9) | |
| Yes | 15 (6.8) | 5 (6.6) | 3 (7.1) | |
| GDM | 0.505 | |||
| No | 211 (94.6) | 75 (97.4) | 40 (93.0) | |
| Yes | 12 (5.4) | 2 (2.6) | 3 (7.0) | |
| Pre-eclampsia | 0.009 | |||
| No | 211 (94.6) | 68 (88.3) | 35 (81.4) | |
| Yes | 12 (5.4) | 9 (11.7) | 8 (18.6) | |
| Hypertension pre-pregnancy | # | |||
| No | 221 (99.1) | 77 (100.0) | 42 (97.7) | |
| Yes | 2 (0.9) | 0 (0.0) | 1 (2.3) |
GDM = Gestational diabetes mellitus
P < 0.05 statistical significance in difference between obesity class I-III groups
# = Assumption for chi2-test not fulfilled