Table 1A.
Selected characteristics of the study sample by prepregnancy maternal body mass index (BMI) in Qatar (n=1134)
| Prepregnancy BMI category | ||||||
| Normal weight (n=404) |
Overweight (n=399) | Obese (n=230) |
Missing (n=101) |
Total (n=1134) |
P value | |
| Maternal age (years) | <0.001 | |||||
| 18–24 | 212 (52.48%) | 141 (35.34%) | 73 (31.74%) | 48 (47.52%) | 474 (41.8%) | |
| 25–30 | 157 (38.86%) | 195 (48.87%) | 114 (49.57%) | 39 (38.61%) | 505 (44.53%) | |
| 31–44 | 35 (8.66%) | 63 (15.79%) | 43 (18.7%) | 14 (13.86%) | 155 (13.67%) | |
| Maternal ethnicity | 0.005 | |||||
| Arab | 254 (62.87%) | 240 (60.15%) | 114 (49.57%) | 63 (62.38%) | 671 (59.17%) | |
| Non-Arab | 150 (37.13%) | 159 (39.85%) | 116 (50.43%) | 38 (37.62%) | 463 (40.83%) | |
| Pre-existing hypertension | ||||||
| Yes | 8 (1.98%) | 10 (2.51%) | 4 (1.74%) | 2 (1.98%) | 24 (2.12%) | 0.94 |
| No | 396 (98.02%) | 389 (97.49%) | 226 (98.26%) | 99 (98.02%) | 1110 (97.88%) | |
| Pre-existing diabetes mellitus type 1 or 2 | ||||||
| Yes | 5 (1.24%) | 4 (1%) | 4 (1.74%) | 0 (0%) | 13 (1.15%) | 0.67 |
| No | 399 (98.76%) | 395 (99%) | 226 (98.26%) | 101 (100%) | 1121 (98.85%) | |
| Pre-existing thyroid condition | ||||||
| Yes | 18 (4.46%) | 10 (2.51%) | 12 (5.22%) | 2 (1.98%) | 42 (3.7%) | 0.22 |
| No | 386 (95.54%) | 389 (97.49%) | 218 (94.78%) | 99 (98.02%) | 1092 (96.3%) | |
| Gestational age at delivery (weeks) | ||||||
| <37 | 32 (7.92%) | 40 (10.03%) | 28 (12.17%) | 10 (9.9%) | 110 (9.7%) | 0.60 |
| 37–41+6 days | 370 (91.58%) | 357 (89.47%) | 200 (86.96%) | 91 (90.1%) | 1018 (89.77%) | |
| ≥42 | 2 (0.5%) | 2 (0.5%) | 2 (0.87%) | 0 (0%) | 6 (0.53%) | |
Values shown as number (%).
χ2 test was used to determine differences across the BMI categories.
Fisher’s exact test was used when cell count was <5.
Bold values are statisticaly significant.