From: Clinically diagnosed childhood asthma and follow-up of symptoms in a Swedish case control study
Case (n = 158) | Control (n = 171) | ||||
---|---|---|---|---|---|
n | % | n | % | p-value | |
Gender | |||||
Male | 102 | 64.5 | 107 | 62.5 | |
Female | 56 | 35.4 | 64 | 37.4 | 0.71 |
Having older siblings | 99 | 62.6 | 108 | 63.1 | 0.37 |
Having younger siblings | 92 | 58.2 | 93 | 54.3 | 0.45 |
Social class of father | |||||
1 | 21 | 13.2 | 20 | 11.7 | 0.85 |
2 | 51 | 32.2 | 57 | 33.3 | |
3 | 75 | 47.5 | 87 | 50.8 | |
Social class of mother | |||||
1 | 8 | 5.0 | 7 | 4.0 | 0.35 |
2 | 69 | 43.6 | 62 | 36.2 | |
3 | 81 | 51.2 | 100 | 58.4 | |
Living conditions during the child's first 3 years | |||||
Countryside | 61 | 38.6 | 79 | 46.2 | 0.16 |
City | 92 | 58.2 | 92 | 53.8 | |
Mixed | 5 | 3.2 | 0 | 0.0 | |
Villa/house | 102 | 64.5 | 116 | 67.8 | 0.46 |
Apartment | 53 | 33.5 | 49 | 28.6 | |
Mixed | 3 | 1.8 | 6 | 3.5 | |
Living conditions at the age of 10 | |||||
Countryside | 71 | 44.9 | 89 | 52.0 | 0.16 |
City | 83 | 52.5 | 82 | 47.9 | |
Mixed | 4 | 2.5 | 0 | 0.0 | |
Villa /house | 118 | 74.7 | 135 | 78.9 | 0.29 |
Apartment | 36 | 22.7 | 35 | 20.4 | |
Mixed | 4 | 2.5 | 1 | 0.5 | |
Smoking habits of father | |||||
Non-smoker | 117 | 74.1 | 140 | 81.8 | 0.22 |
Smokes 0–9 cig/day | 13 | 8.2 | 15 | 8.8 | |
Smokes 10–20 cig/day | 19 | 12.0 | 11 | 6.4 | |
Smokes >20 Cig /day 2 | 1.3 | 5 | 2.9 | ||
Smoking habits of mother | |||||
Non-smoker | 105 | 66.4 | 136 | 79.5 | 0.007 |
Smokes 0–9 cig/day | 24 | 15.2 | 13 | 7.6 | |
Smokes 10–20 cig/day | 27 | 17.1 | 20 | 11.7 | |
Smokes >20 Cig /day | 2 | 1.3 | 2 | 1.2 | |
Smoking habits of other members of the household | |||||
Non-smoker | 152 | 96.2 | 164 | 95.9 | 0.34 |
Smokes 0–9 cig/day: | 4 | 2.5 | 6 | 3.5 | |
Smokes 10–20 cig/day: | 0 | 0.0 | 1 | 0.5 | |
Smokes >20 Cig /day | 2 | 1.2 | 0 | 0.0 | |
Smoking at home during the first 3 years | |||||
No: | 128 | 81.0 | 143 | 83.6 | 0.53 |
Yes: | 30 | 18.9 | 28 | 16.3 |