|
Time
|
Group
|
MDI
|
|---|
|
Total
|
Boys
|
Girls
|
|---|
|
N
|
Mean
b
|
β
|
SE
|
P value
|
N
|
Mean
b
|
β
|
SE
|
P value
|
N
|
Mean
b
|
β
|
SE
|
P value
|
|---|
|
6 months of age
|
High strain
|
77
|
99.6
|
0.79
|
1.79
|
0.66
|
35
|
98.4
|
−0.31
|
2.68
|
0.91
|
42
|
101.1
|
2.14
|
2.47
|
0.39
|
|
Active jobs
|
90
|
97.6
|
−1.25
|
1.71
|
0.47
|
54
|
95.9
|
−2.85
|
2.34
|
0.23
|
36
|
99.5
|
0.61
|
2.55
|
0.81
|
|
Passive jobs
|
64
|
96.1
|
−2.76
|
1.91
|
0.15
|
30
|
96.5
|
−2.16
|
2.78
|
0.44
|
34
|
95.8
|
−3.10
|
2.67
|
0.25
|
|
Low strainc
|
75
|
98.8
|
Ref.
|
-
|
-
|
38
|
98.7
|
Ref.
|
-
|
-
|
37
|
98.9
|
Ref.
|
-
|
-
|
|
12 months of age
|
High strain
|
66
|
99.9
|
−0.16
|
2.94
|
0.96
|
35
|
96.4
|
−9.46
|
4.43
|
0.03
|
31
|
102.5
|
8.25
|
3.88
|
0.04
|
|
Active jobs
|
71
|
100.6
|
0.51
|
2.86
|
0.86
|
41
|
98.6
|
−7.30
|
4.08
|
0.08
|
30
|
103.0
|
8.74
|
3.94
|
0.03
|
|
Passive jobs
|
60
|
100.5
|
0.47
|
3.02
|
0.88
|
27
|
101.9
|
−3.98
|
4.61
|
0.39
|
33
|
99.8
|
5.56
|
3.86
|
0.15
|
|
Low strainc
|
55
|
100.1
|
Ref.
|
-
|
-
|
28
|
105.8
|
Ref.
|
-
|
-
|
27
|
94.2
|
Ref.
|
-
|
-
|
-
aThe general linear model was used to find the association adjusted for sex, birth weight, maternal age, gestational age, maternal education, and family income.
-
bAdjusted means for sex, birth weight, maternal age, gestational age, maternal education, and family income.
-
cReference group (Ref.).
