Table 1.
Frequency of B. hominis in Sari city by demographic data
| Variables | No. of examined | No. of positive (%) | P value |
|---|---|---|---|
| Age | |||
| < 10 | 7 | 1 (14.2) | 0.03 |
| 11–20 | 14 | 1 (7.1) | |
| 21–30 | 105 | 11 (10.4) | |
| 31–40 | 84 | 18 (21.4) | |
| 41–50 | 98 | 20 (20.4) | |
| ≥ 50 | 112 | 9 (8.1) | |
| Sex | |||
| Male | 245 | 48 (19.5) | 0.0002 |
| Female | 175 | 12 (6.8) | |
| Residence | |||
| Rural | 280 | 31 (11.1) | 0.007 |
| Urban | 140 | 29 (20.7) | |
| Consumed water | |||
| Healthy water | 84 | 27 (47.3) | |
| Unhealthy water | 336 | 33 (9.8) | P < 0.0001 |
| Job | |||
| Student | 14 | 2 (14.2) | |
| Private business | 252 | 33 (13.1) | 0.002 |
| Housewife | 70 | 5 (7.1) | |
| Government employee | 42 | 5 (11.9) | |
| Agriculture | 42 | 15 (35.7) | |
| Clinical symptoms | |||
| Yes | 42 | 8 (19.1) | 0.35 |
| No | 378 | 52 (13.7) | |
| Contact with domestic animals | |||
| Yes | 84 | 28 (33.3) | P < 0.0001 |
| No | 336 | 32 (9.5) | |