| |
Controls without IP (N = 959)
|
IP (N = 44)
| |
Controls vs. IP
|
Controls without EP (N = 973)
|
EP (N = 30)
| |
Controls vs. EP
|
|---|
| | | |
UOR
|
d (95% CI)
|
p
| | |
UOR
|
d (95% CI)
|
p
|
|---|
|
Age, mean (SD)
|
9.04 (0.70)
|
9.20 (0.59)
|
-1.49a
| |
0.137b
| |
9.03 (0.72)
|
0.14a
| |
0.885b
|
|
Male (n(%))
|
560 (57.9)
|
25 (56.8)
|
0.96 (0.52-1.76)
|
-0.10 (-0.25-0.05)
|
0.890
|
561 (57.7)
|
19 (63.3)
|
1.27 (0.60-2.70)
|
0.06 (-0.13-0.25)
|
0.536
|
|
Region (n(%))
| | | | | | | | | | |
|
Urban
|
404 (41.8)
|
17 (38.6)
|
ref
| | |
413 (42.1)
|
8 (26.7)
|
ref
| | |
|
Industrial
|
381 (39.4)
|
19 (43.2)
|
1.17 (0.64-2.15)
|
0.04 (-0.10-0.18)
|
0.616
|
384 (39.1)
|
16 (53.3)
|
1.78 (0.86-3.68)
|
0.14 (-0.04-0.32)
|
0.122
|
|
Rural
|
182 (18.8)
|
8 (18.2)
|
1.04 (0.48-2.28)
|
0.01 (-0.18-0.20)
|
0.915
|
184 (18.8)
|
6 (20.0)
|
0.92 (0.37-2.29)
|
-0.02 (-0.24-0.20)
|
0.864
|
|
Family income (n(%))
| | | | | | | | | | |
|
Middle or upper
|
601 (62.2)
|
26 (59.1)
|
ref
| | |
596 (62.6)
|
13 (43.4)
|
ref
| | |
|
Lower
|
366 (37.8)
|
18 (40.9)
|
1.14 (0.62-2.10)
|
0.03 (-0.12-0.18)
|
0.683
|
356 (37.4)
|
17 (56.7)
|
2.19 (1.05-4.56)
|
0.19 (0.01-0.37)
|
0.036*
|
|
Paternal education (n(%))
| | | | | | | | | | |
|
High school degree or lower
|
514 (53.2)
|
28 (64.3)
|
1.59 (0.83-3.02)
|
0.11 (-0.04-0.26)
|
0.161
|
523 (53.3)
|
20 (65.5)
|
1.67 (0.77-3.62)
|
0.12 (-0.07-0.31)
|
0.198
|
|
College degree or higher
|
453 (46.8)
|
16 (35.7)
|
ref
| | |
458 (46.7)
|
10 (34.5)
|
ref
| | |
|
Maternal education (n(%))
| | | | | | | | | | |
|
High school degree or lower
|
647 (66.9)
|
31 (71.4)
|
1.23 (0.62-2.44)
|
0.05 (-0.12-0.22)
|
0.550
|
656 (66.9)
|
23 (75.9)
|
1.55 (0.66-3.68)
|
0.10 (-0.11-0.31)
|
0.316
|
|
College degree or higher
|
320 (33.1)
|
13 (28.6)
|
ref
| | |
325 (33.1)
|
7 (24.1)
|
ref
| | |
- at-statistics; bresult of independent t-test, others are the results of binary logistic regression analyses; UOR, unadjusted odd ratio; ref, reference group; *p <0.05.
