Table 4: Association of HBsAg seropositivity with risk factors in the controls.
| Risk factors | HbsAg positive N (%) | HbsAg negative N (%) |
Chi-square |
P-value |
| Tribal marks | 0 (0.0) | 6 (4.8) | Fisher’s | 1.000 |
| Scarification marks | 0 (0.0) | 7 (5.6) | Fisher’s | 1.000 |
| Ear piercing | 3 (20.0) | 53 (42.4) | Fisher’s | 0.094 |
| Sharing of tooth brush | 0 (0.0) | 8 (6.4) | Fisher’s | 0.599 |
| Sharing of towel | 4 (26.7) | 41 (32.8) | Fisher’s | 0.774 |
| Sharing sponge | 7 (46.7) | 57 (45.6) | 0.006 | 0.938 |
| Sharing barbing devices | 7 (77.8) | 73 (83.0) | 0.753 | 0.386 |
| Sharing nail cutting devices | 8 (53.3) | 60 (48.0) | 0.153 | 0.696 |
| Previous hospitalization | 1 (6.7) | 28 (22.4) | Fisher’s | 0.196 |
| Previous transfusion | 1 (6.7) | 8 (6.4) | Fisher’s | 1.000 |
| Previous surgery | 0 (0.0) | 7 (5.7) | Fisher’s | 1.000 |
| Circumcision | 10 (66.7) | 57 (45.6) | 1.420 | 0.233 |