Table 1 Characteristics of the study population
Year of study | Total | |||||
|---|---|---|---|---|---|---|
1978 | 1986 | 1992 | 1997 | 2001 | ||
No. of studied women | 595 (656) | 654 (671) | 925 (1178) | 604 (863) | 1 020 (1543) | 3 798 (4911) |
Categorized BMI | ||||||
< 20 | 186 (31.3%) | 153 (23.4%) | 152 (16.4%) | 75 (12.4%) | 103 (10.1%) | 669 (17.6%) |
20-24.9 | 343 (57.6%) | 416 (63.6%) | 542 (58.6%) | 334 (55.3%) | 526 (51.6%) | 2 161 (56.9%) |
≥ 25 | 66 (11.1%) | 85 (13.0%) | 231 (25.0%) | 195 (32.3%) | 391 (38.3%) | 968 (25.5%) |
No. of Cesarean sections | 54 (9.1%) | 74 (11.3%) | 118 (12.8%) | 58 (9.6%) | 171 (16.8%) | 475 (12.5%) |
No. of instrumental deliveries | 54 (9.1%) | 44 (6.7%) | 33 (3.6%) | 48 (7.9%) | 94 (9.2%) | 273 (7.2%) |