Severe bronchiolitis group (n=85) Mild-moderate bronchiolitis group (n=355)
p
History of asthma in the parents a 8 (9.5%) 41 (11.6%) 0.240
Maternal history of smoking during pregnancy a 14 (16.5%) 32 (9.0%) 0.050
Maternal history of active smokinga 17 (20.0%) 40 (11.3%) 0.046*
Paternal history of active smoking a 52 (61.2%) 228 (64.2%) 0.617
Maternal education levelb 0.414
Illiterate
6 (7.1%)
15 (4.2%)
Literate
1 (1.2%)
5 (1.4%)
Elementary school graduate
35 (41.2%)
119 (33.5%)
Middle school graduate
20 (% 23.5)
112 (% 31.5)
High school graduate
18 (21.2%)
71 (20.0%)
University graduate
5 (5.9%)
33 (9.3%)
Paternal education levelb 0.028*
Illiterate
4 (4.7%)
6 (1.7%)
Literate
-
2 (0.6%)
Elementary school graduate
28 (32.9%)
101 (28.5%)
Middle school graduate
14 (16.5%)
107 (30.1%)
High school graduate
28 (32.9%)
80 (22.5%)
University graduate
11 (12.9%)
59 (16.6%)
Being the family’s only childa 11 (12.9%) 94 (26.5%) 0.010*
Number of individuals in the householdc 5.55±2.00 (3-12) 5.00±1.75 (3-15) 0.011*
Place of residence (urban/rural)a 66/19 27/84 0.887
Type of home (self-contained house/apartment)a 59/26 228/127 0.379
Type of heating (natural gas/stove)a 23/62 125/230 0.162