Risk Factors Associated with Severity of Nongenetic Intellectual Disability (Mental Retardation) among Children Aged 2–18 Years Attending Kenyatta National Hospital
Table 4
Association between sociodemographic and economic characteristics of mothers and severity of intellectual disability.
Variables
Severe/profound
Mild/moderate
OR
95% CI
test
%
%
Lower
Upper
value
Age of the mother
21–35 years
15
21.7%
54
78.3%
1.00
36 years
7
46.7%
8
53.3%
3.15
0.98
10.09
0.053
Age of the mother at the time of birth of the child
Below 20 years
2
33.3%
4
66.7%
1.25
0.12
13.24
0.853
21–35 years
18
25.4%
53
74.6%
0.85
0.15
4.76
0.852
>36 years
2
28.6%
5
71.4%
Age of the father
21–35 years
8
17.4%
38
82.6%
0.44
0.15
1.26
0.120
>36 years
11
32.4%
23
67.6%
1.00
Age of the father at the time of birth of the child
21–35 years
12
20.7%
46
79.3%
0.56
0.19
1.68
0.296
>36 years
7
31.8%
15
68.2%
1.00
Highest level of education of the mother
Primary level
8
30.8%
18
69.2%
0.74
0.14
3.88
0.722
Secondary level
11
22.0%
39
78.0%
0.47
0.10
2.28
0.349
College/university Level
3
37.5%
5
62.5%
1.00
Highest level of education of the father
Primary level
2
28.6%
5
71.4%
0.90
0.14
5.66
0.911
Secondary level
9
20.0%
36
80.0%
0.56
0.19
1.70
0.309
College/university Level
8
30.8%
18
69.2%
1.00
Occupation of the mother
Regular employment
8
30.8%
18
69.2%
1.00
Casual employment
6
14.6%
35
85.4%
0.39
0.12
1.28
0.120
Unemployed
8
47.1%
9
52.9%
2.00
0.56
7.09
0.283
Occupation of the father
Regular employment
13
30.2%
30
69.8%
2.60
0.82
8.20
0.096
Casual employment
5
14.3%
30
85.7%
1.00
Unemployed
Whether the father smokes
Yes
3
12.0%
22
88.0%
0.33
0.09
1.27
0.096
No
16
29.1%
39
70.9%
1.00
Average monthly income in the family (in KES)
<21,000
8
23.5%
26
76.5%
0.79
0.29
2.16
0.647
21,000 and more
14
28.0%
36
72.0%
1.00
OR = odds ratio; CI = confidence interval; = chi-square.
