Table 3.
Determinants of HBsAg prevalence among children aged 4–30 months and 5–9 years in Bo, Bombali, and Western Area Urban—Sierra Leone, 2018.
| 4–30-month-olds |
5–9-year-olds |
|||||||
|---|---|---|---|---|---|---|---|---|
| No. tested |
No. HBsAg+ |
HBsAg prevalence (Wilson 95% CIs) |
P-value | No. tested |
No. HBsAg+ | HBsAg prevalence (Wilson 95% CIs) |
P-value | |
| Overall HBsAg prevalence | 1887 | 20 | 1·3% (0·8, 2·0) | 2022 | 32 | 1·6% (1·1, 2·3) | ||
| Sex | ||||||||
| Male | 997 | 13 | 1·7% (1·0, 3·1) | 993 | 19 | 1·8% (1·1, 3·0) | ||
| Female | 890 | 7 | 0·7% (0·3, 1·8) | 0·110 | 1028 | 13 | 1·3% (0·7, 2·4) | 0·436 |
| District | ||||||||
| Western Area Urban | 1002 | 11 | 1·2% (0·6, 2·4) | 1095 | 14 | 1·4% (0·8, 2·4) | ||
| Bo | 466 | 5 | 1·1% (0·5, 2·7) | 466 | 11 | 2·0% (1·1, 3·7) | ||
| Bombali | 419 | 4 | 1·5% (0·6, 3·6) | 0·916 | 461 | 7 | 1·3% (0·5, 3·1) | 0·579 |
| Received HepB * | ||||||||
| 3 doses | 1552 | 14 | 1·0% (0·5, 1·9) | 1432 | 18 | 1·3% (0·8, 2·2) | ||
| 1 or 2 doses | 167 | 3 | 2·3% (0·8, 7·0) | 95 | 2 | 1·5% (0·3, 6·5) | ||
| 0 doses | 25 | 1 | 5·7% (1·2, 23·0) | 29 | 1 | 3·7% (0·7, 17·5) | ||
| Unknown | 143 | 2 | 1·6% (0·4, 5·9) | 0·190 | 466 | 11 | 2·0% (1·1, 3·8) | 0·531 |
| Blood transfusion ˠ | ||||||||
| Yes | 19 | 1 | 6·1% (1·2, 26·2) | 77 | 1 | 1·3% (0·2, 7·0) | ||
| No | 1864 | 19 | 1·2% (0·7, 2·0) | 0·417 | 1921 | 30 | 1·5% (1·0, 2·3) | 0·862 |
| Circumcision ˠ | ||||||||
| Yes | 586 | 9 | 2·3% (1·1, 4·6) | 955 | 18 | 1·8% (1·0, 2·9) | ||
| No | 1300 | 11 | 0·8% (0·4, 1·6) | 0·115 | 1064 | 14 | 1·4% (0·8, 2·4) | 0·540 |
| Maternal age (years) ‡ | ||||||||
| 15–25 | 660 | 9 | 1·2% (0·5, 2·6) | .. | .. | .. | ||
| >25 | 763 | 4 | 1·0% (0·4, 2·6) | .. | .. | .. | ||
| Unknown | 351 | 3 | 1·6% (0·6, 4·5) | 0·447 | .. | .. | .. | .. |
| Maternal Education ‡ ˠ | ||||||||
| None | 766 | 5 | 1·2% (0·5, 2·7) | .. | .. | .. | ||
| Primary & Junior School | 549 | 8 | 1·5% (0·7, 3·4) | .. | .. | .. | ||
| Senior School & Higher | 458 | 3 | 0·7% (0·2, 2·6) | 0·634 | .. | .. | .. | .. |
| Maternal religion ‡ ˠ | ||||||||
| Islam | 1215 | 10 | 1·1% (0·5, 2·1) | .. | .. | .. | ||
| Christian | 558 | 6 | 1·5% (0·7, 3·3) | 0·567 | .. | .. | .. | .. |
| Maternal HBsAg (Alere) ‡ | ||||||||
| Positive | 169 | 10 | 5·9% (2·8, 11·8) | .. | .. | .. | ||
| Negative | 1605 | 6 | 0·7% (0·3, 1·5) | 0·024 | .. | .. | .. | .. |
No. – number, 95% CIs – 95% confidence intervals.
*
Includes vaccination card documented and verbal report of hepatitis B containing vaccine receipt.
‡
Excludes 113 mothers (6%) that refused or were unable to participate.
ˠ
Excludes unknown values. Unknown values were included in maternal age as they accounted for > 20% of the values, whereas for all other variables unknown values were < 5.