| Case N = 19 | (%) (100) | Control N = 29 | (%) (100) |
---|---|---|---|---|
Maternal age | ||||
  > 17 years | 2 | ([10) | 0 | (0) |
 22–34 years | 14 | (74) | 23 | (79) |
  > 35 year | 3 | (16) | 6 | (21) |
Parity | ||||
 Nullipara | 14 | (74) | 16 | (55) |
 Multipara | 5 | (26) | 13 | (45) |
Uterine scar | ||||
 Yes | 0 | (0) | 3 | (23) |
 No | 5 | (100) | 10 | (77) |
Pre-pregnancy disordersa | ||||
 Yes | 0 | (0) | 1c | (4) |
 No | 16 | (100) | 25 | (96) |
Smoking during pregnancyb | ||||
 Yes | 0 | (0) | 5 | (21) |
 No | 14 | (100) | 19 | (79) |
Mode of delivery | ||||
 Vaginal | 10 | (53) | 14 | (48) |
 Emergency caesarean | 6 | (31) | 9 | (31) |
 Planned caesaeran | 3 | (16) | 6 | (21) |
The child: | ||||
 Sex | ||||
  Male | 12 | (67) | 14 | (48) |
  Female | 7 | (33) | 15 | (52) |