| Risk factor |
|
|
|
| |
N° of asthmatic children (%)
(Tot=34,957) |
N° of non-asthmatic children (%)
(Tot=108,206) |
P-value
(Pearson’s chi-square) |
| Sex |
|
|
|
male
female |
19,268 (55.12)
15,689 (44.88) |
53,255 (49.22)
54,951 (50.78) |
<0.001 |
| Type of delivery* |
|
|
|
spontaneous
elective cesarean
emergency cesarean
other^ |
11,857 (67.91)
2,179 (12.48)
2,221 (12.72)
1,203 (6.89) |
49,207 (70.40)
8,021 (11.48)
8,188 (11.71)
4,481 (6.41) |
<0.001 |
| Birth weight (grams) |
|
|
|
<2,500
≥2,500 |
2,207 (6.31)
32,750 (93.69) |
5,804 (5.36)
102,402 (94.64) |
<0.001 |
| Gestational age>3629-35< |
33,174 (95.64)
1,360 (3.92)
152 (0.44) |
103,758 (96.60)
3,437 (3.20)
216 (0.20) |
<0.001 |
| Maternal age at birth (years) |
|
|
|
≤24
25-29
30-34
35-39
≥40 |
2,889 (8.26)
9,726 (27.82)
13,822 (39.54)
7,203 (20.61)
1,317 (3.77) |
10,163 (9.39)
27,048 (25.00)
40,977 (37.87)
24,823 (22.94)
5,195 (4.80) |
<0.001 |
| Mother’s formal education |
|
|
|
up to 8th grade
up to 13th grade
university |
5,130 (14.94)
17,009 (49.55)
12,189 (35.51) |
20,492 (19.21)
52,574 (49.29)
33,590 (31.49) |
<0.001 |
| Hospital admissions for respiratory infections in first year of life |
1,059 (3.03) |
2,015 (1.86) |
<0.001 |
|
