Maternal Variables | Case Mothers | Control Mothers | Comparison between Treated Case and Control Mothers | ||||||
---|---|---|---|---|---|---|---|---|---|
Untreated(N=22,760) | Treated(N=83) | Untreated(N=38,054) | Treated(N=97) | ||||||
No. | % | No. | % | No. | % | No. | % | ||
Quantitative | |||||||||
Maternal age (yr) 24 or less | 10,293 | 45.2 | 22 | 26.5 | 17,961 | 47.2 | 33 | 34.0 | |
25-29 | 7,750 | 34.1 | 34 | 41.0 | 12,846 | 33.8 | 39 | 40.2 | X22=1.5 p=0.46 |
30 or more | 4,717 | 20.7 | 27 | 32.5 | 7,247 | 19.0 | 25 | 25.8 | |
Mean±S.D. | 25.4±5.3 | 27.4±4.7 | 25.4±4.9 | 26.8±4.6 | t=0.9 p=0.36 | ||||
Birth order 1 | 10,650 | 46.8 | 58 | 69.9 | 18,141 | 47.7 | 68 | 70.1 | X 21=0.0 p=0.97 |
2 or more | 12,110 | 53.2 | 25 | 30.1 | 19,913 | 52.3 | 29 | 29.9 | |
Mean±S.D. | 1.9±1.1 | 1.4±0.8 | 1.8±0.9 | 1.4±0.6 | t=0.9 p=0.90 | ||||
Pregnancy order 1 | 9,741 | 42.8 | 32 | 38.6 | 16,325 | 42.9 | 36 | 37.1 | X 21=0.04 p=0.84 |
2 or more | 13,019 | 57.2 | 51 | 61.4 | 21,729 | 57.1 | 61 | 62.9 | |
Mean±S.D. | 2.1±1.4 | 2.3±1.6 | 2.0±1.2 | 2.1±1.2 | t= 1.0 p=0.96 | ||||
Categorical Unmarried | 1,265 | 5.6 | 4 | 4.8 | 1,470 | 3.9 | 1 | 1.0 | X 26=4.0 p=0.68 |
Employment status Professional | 1,881 | 8.3 | 20 | 24.1 | 4,330 | 11.4 | 23 | 23.7 | |
Managerial | 4,945 | 21.7 | 23 | 27.7 | 10,104 | 26.6 | 30 | 30.9 | |
Skilled worker | 6,308 | 27.7 | 21 | 25.3 | 11,660 | 30.6 | 30 | 30.9 | |
Semiskilled worker | 3,857 | 17.0 | 12 | 14.5 | 5,774 | 15.2 | 9 | 9.3 | |
Unskilled worker | 1,502 | 6.6 | 1 | 1.2 | 1,859 | 4.9 | 0 | 0.0 | |
Housewife | 2,124 | 9.3 | 4 | 4.8 | 2,036 | 5.4 | 2 | 2.1 | |
Others | 2,143 | 9.4 | 2 | 2.4 | 2,291 | 6.0 | 3 | 3.1 |