|
Variable
|
Total 13310 n(%)/x ± s
|
AIT 196 (1.5%) n(%)/x ± s
|
Not AIT 13114 (98.5%) n(%)/x ± s
|
Adj. OR
|
95% CI (Adj. OR)
|
p-value
|
|---|
|
Gender male
|
6861(51.5)
|
95(48.5)
|
6766(51.6)
|
0.88
|
0.66-1.17
|
0.385
|
|
Maternal origin:
| | | | | | |
|
Spain
|
9994(75.1)
|
144(73.5)
|
9850(75.1)
|
1
|
1
|
0.219
|
|
Africa
|
953(7.2)
|
22(11.2)
|
931(7.1)
|
1.50
|
0.95-2.37
| |
|
South America
|
967(7.3)
|
9(4.6)
|
958(7.3)
|
0.63
|
0.32-1.25
| |
|
Rest of Europe
|
1061(8.0)
|
15(7.7)
|
1046(8.0)
|
0.88
|
0.51-1.52
| |
|
Asia
|
335(2.5)
|
6(3.1)
|
329(2.5)
|
1.21
|
0.52-2.82
| |
|
Maternal age (years):
| | | | | | |
|
<20
|
358(2.7)
|
8(4.1)
|
350(2.7)
|
1.70
|
0.83-3.49
|
0.353
|
|
20-40
|
12531(94.1)
|
182(92.9)
|
12349(94.2)
|
1
|
1
| |
|
>40
|
421(3.2)
|
6(3.1)
|
415(3.2)
|
1.06
|
0.46-2.40
| |
|
Gestational age (weeks):
| | | | | | |
|
<32
|
146(1.1)
|
6(3.1)
|
140(1.1)
|
1.45
|
0.49-4.25
|
0.137
|
|
32-37
|
1568(11.8)
|
13(6.6)
|
1555(11.9)
|
0.59
|
0.33-1.05
| |
|
>37
|
11596(87.1)
|
177(90.3)
|
11419(87.1)
|
1
|
1
| |
|
Feeding method:
| | | | | | |
|
Natural
|
8698(65.3)
|
144(73.5)
|
8554(65.2)
|
1
|
1
|
<0.001
|
|
Mixed
|
1902(14.3)
|
16(8.2)
|
1886(14.4)
|
0.53
|
0.31-0.89
| |
|
Formula
|
2689(20.2)
|
30(15.3)
|
2659(20.3)
|
0.72
|
0.48-1.07
| |
|
Special
|
21(0.2)
|
6(3.1)
|
15(0.1)
|
21.88
|
6.92-69.14
| |
|
Days from extraction >20
|
47(0.4)
|
1(0.5)
|
46(0.4)
|
1.51
|
0.21-11.13
|
0.684
|
|
Temperature (°C)
|
18.7 ± 5.6
|
18.0 ± 5.2
|
18.8 ± 5.6
|
0.98
|
0.95-1.00
|
0.064
|
- Abbreviations: AIT atypical immunoreactive trypsin, Adj. OR adjusted odds ratio, CI confidence interval.
- Goodness-of-fit of the model: Χ2 = 53.19, p < 0.001.
- ORs were adjusted for: gender, maternal origin, maternal age, gestational age, feeding method, days from extraction and temperature.
- 2012-2013 data.
