Table 1Vaccination rate of hepatitis A by general characteristics of children in Nonsan, 2005
Characteristics (n) |
≥ 1 dose
|
2-dose
|
Vaccination rate (%) |
p value* |
Vaccination rate (%) |
p value* |
Gender |
|
|
|
|
Male (777) |
41.3 |
|
24.3 |
|
Female (716) |
43.3 |
0.438 |
25.1 |
0.715 |
Child’s age (month) |
|
|
|
|
12-23 (724) |
39.4 |
|
13.5 |
|
24-35 (769) |
45.0 |
0.028 |
35.2 |
<0.001 |
Geographical area |
|
|
|
|
Urban (803) |
47.1 |
|
26.4 |
|
Rural (690) |
36.7 |
<0.001 |
22.8 |
0.103 |
Birth order |
|
|
|
|
First (606) |
53.0 |
|
33.0 |
|
Second (636) |
39.2 |
|
21.9 |
|
Third+ (248) |
24.2 |
<0.001 |
11.7 |
<0.001 |
Missing (3) |
- |
|
- |
|
No. of sibling |
|
|
|
|
0 (418) |
50.5 |
|
28.7 |
|
1 (777) |
44.0 |
|
27.0 |
|
2+ (286) |
26.6 |
<0.001 |
12.9 |
<0.001 |
Missing (12) |
- |
|
- |
|
Primary caregiver |
|
|
|
|
Parent (1,233) |
43.6 |
|
25.9 |
|
Other (256) |
35.2 |
0.012 |
18.8 |
0.016 |
Missing (4) |
- |
|
- |
|
Total (1,493) |
42.3 |
|
24.7 |
|
Table 2Vaccination rate of hepatitis A by general characteristics of subject's parents in Nonsan, 2005
Characteristics (n) |
≥ 1 dose
|
2-dose
|
Vaccination rate (%) |
p value* |
Vaccination rate (%) |
p value* |
Economic status |
|
|
|
|
Low (207) |
29.5 |
|
16.9 |
|
Medium+ (1,267) |
44.4 |
<0.001 |
26.1 |
0.004 |
Missing (19) |
- |
|
- |
|
Mother’s employment |
|
|
|
|
No (1059) |
45.0 |
|
26.3 |
|
Yes (357) |
35.6 |
0.002 |
22.7 |
0.181 |
Missing (77) |
- |
|
- |
|
Marital status |
|
|
|
|
Married (1,431) |
42.6 |
|
24.7 |
|
Others (36) |
25.0 |
0.034 |
16.7 |
0.226 |
Missing (26) |
- |
|
- |
|
Health security |
|
|
|
|
Health insurance |
42.8 |
|
25.1 |
|
(1,435) |
|
|
|
|
Medical aid (50) |
30.0 |
0.072 |
16.0 |
0.143 |
Missing (8) |
- |
|
- |
|
Mother’s education |
|
|
|
|
≤ High school (928) |
40.9 |
|
25.1 |
|
≥ College (541) |
45.1 |
0.120 |
24.8 |
0.885 |
Missing (24) |
- |
|
- |
|
Total (1,493) |
42.3 |
|
24.7 |
|
Table 3Vaccination rate and risk for non-vaccination of hepatitis A by other vaccinations in Nonsan, 2005
Vaccine (n) |
Vaccination rate of hepatitis A (%)
|
Age-adjusted 1 OR (95% CI)
|
≥ 1 dose |
2-dose |
≥ 1 dose |
2-dose |
MMR |
|
|
|
|
Yes (1,362)* |
44.3 |
26.7 |
1.0 |
1.0 |
No (131) |
21.4 |
3.8 |
2.8 (1.8-4.3) |
7.3 (3.0-18.2) |
Varicella |
|
|
|
|
Yes (1,108)* |
55.0 |
32.5 |
1.0 |
1.0 |
No (385) |
5.7 |
2.3 |
20.2 (12.9-31.5) |
22.0 (11.2-43.3) |
Haemophilus influenza type b |
|
|
|
Yes (793)* |
68.1 |
41.5 |
1.0 |
1.0 |
No (700) |
13.0 |
5.7 |
14.3 (11.0-18.7) |
13.3 (9.3-19.1) |
Table 4Risk factors for non-vaccination of hepatitis A in Nonsan, 2005
Variables (reference) |
Age adjusted OR (95% CI)
|
Multivariate adjusted* OR (95% CI)
|
≥1 dose |
2-dose |
≥ 1 dose |
2-dose |
Birth order (first) |
|
|
|
|
Second |
1.7 (1.4-2.2) |
1.8 (1.4-2.3) |
1.6 (1.3-2.1) |
1.8 (1.3-2.3) |
Third+ |
3.5 (2.5-4.9) |
3.9 (2.5-6.0) |
3.3 (2.3-4.6) |
3.7 (2.4-5.8) |
Economic status (medium+) |
|
|
|
|
Low |
1.9 (1.4-2.6) |
1.7 (1.2-2.6) |
1.6 (1.2-2.3) |
1.6 (1.0-2.4) |
Geographical area (urban) |
|
|
|
|
Rural |
1.5 (1.3-1.9) |
1.3 (1.0-1.6) |
1.5 (1.2-1.8) |
1.3 (0.9-1.7) |
Mother’s employment (no) |
|
|
|
|
Yes |
1.5 (1.2-1.9) |
1.3 (1.0-1.7) |
1.5 (1.2-2.0) |
1.2 (0.9-1.5) |
Table 5Calculation of relative prevalence after stratifying by mother's employment; observed association of primary caregiver and vaccination of hepatitis A was a result of confounding by a mother's employment
|
|
Vaccination of hepatitis A (%)
|
|
Yes |
No |
Mother’s employment |
Primary caregiver |
|
|
Relative prevalence (95% CI) |
Yes |
Parent |
62 (36.0) |
110 (64.0) |
36.0%/34.6%=1.0 (0.8-1.4) |
|
Other |
63 (34.6) |
119 (65.4) |
|
|
Total |
125 (35.3) |
229 (64.7) |
|
No |
Parent |
460 (45.3) |
556 (54.7) |
45.3%/38.1%=1.2 (0.8-1.8) |
|
Other |
16 (38.1) |
26 (61.9) |
|
|
Total |
476 (45.0) |
582 (55.0) |
|