Cases | Controls | |
---|---|---|
Male sex | 48 (66%) | 84 (58%) |
Twins | 6 (8%) | 2 (1%) |
Single mother | 4 (5%) | 2 (1%) |
Multiparity | 52 (70%) | 69 (47%) |
Signs of illness in reference sleep | ||
Less alert | 18 (24%) | 4 (3%) |
Cold | 33 (45%) | 66 (45%) |
Fever | 6 (8%) | 4 (3%) |
Profuse sweating | 4 (6%) | 5 (3%) |
Bronchitis/pneumonia | ||
Before final week | 9 (12%) | 24 (16%) |
In final week | 2 (3%) | 5 (3%) |
Smoking behaviour mother | ||
Before pregnancy | ||
Non-smoker | 40 (54%) | 109 (74%) |
Fewer than 10 | 7 (10%) | 11 (7%) |
10 or more | 27 (36%) | 28 (19%) |
During pregnancy | ||
Non-smoker | 44 (60%) | 121 (82%) |
Fewer than 10 | 12 (16%) | 19 (13%) |
10 or more | 18 (24%) | 8 (5%) |
After birth | ||
Non-smoker | 44 (60%) | 119 (80%) |
Fewer than 10 | 4 (5%) | 13 (9%) |
10 or more | 26 (35%) | 16 (11%) |
Smoking behaviour father and others | ||
Before pregnancy | ||
Non-smoker | 32 (43%) | 105 (71%) |
Fewer than 10 | 11 (15%) | 11 (8%) |
10 or more | 31 (42%) | 31 (21%) |
During pregnancy | ||
Non-smoker | 32 (43%) | 108 (74%) |
Fewer than 10 | 11 (15%) | 12 (8%) |
10 or more | 31 (42%) | 27 (18%) |
After birth | ||
Non-smoker | 34 (46%) | 112 (76%) |
Fewer than 10 | 8 (11%) | 11 (8%) |
10 or more | 32 (43%) | 24 (16%) |
Breast feeding only | ||
More than 6 weeks | 28 (39%) | 82 (55%) |
More than 13 weeks | 7 (10%) | 41 (28%) |
Maternal psychological problems | 7 (10%) | 3 (2%) |
Change in routine | 32 (43%) | 44 (30%) |
Bed sharing | 6 (8%) | 7 (5%) |
Together with excessive smoking | 4 (5%) | 1 (1%) |
Mean (SD) maternal age (years) | 25.65 (4.73) | 28.24 (4.36) |
Mean (SD) birth weight (g) | 3060 (800) | 3500 (680) |
Mean (SD) gestational age (weeks) | 38.27 (3.40) | 39.64 (1.47) |
Socioeconomic status | −0.37 (1.41) | 0.18 (1.39) |
Alcohol use since birth of child1-150 | ||
Mother | 0.28 (0.61) | 0.34 (0.67) |
Father | 1.53 (2.47) | 1.09 (1.31) |
Alcohol use before reference sleep1-150 | ||
Mother | 0.33 (0.90) | 0.26 (0.65) |
Father | 1.64 (3.29) | 0.97 (1.48) |
↵1-150 Mean (SD) number of alcoholic drinks each day.