Table 4. Relationship between prevalence of intestinal parasitic infections and certain assumed risk factors among 1041 food handlers aged 18-64 years in Sari, northern Iran, 2011-2012.
| Risk factors | Total examined n (%) | Positive n (%) | OR | p-value |
|---|---|---|---|---|
| Place of living | ||||
| Rural | 350 (33.6) | 60 (17.1) | 1.2 [0.85,1.71] | 0.31 |
| Urban | 691 (66.4) | 101 (14.6) | ||
| Educational level | ||||
| Illiterate | 186 (17.9) | 56 (30.1) | 2.12 [1.39,3.24] | <0.005 |
| Primary school | 332 (31.9) | 58 (17.5) | ||
| Secondary school | 475 (45.6) | 43 (9) | ||
| College studies | 48 (4.6) | 4 (8.3) | ||
| Economic status | ||||
| ≤200 US $ | 816 (78.4) | 131 (16) | 1.24 [0.81,1.9] | 0.34 |
| >200 US $ | 225 (21.6) | 30 (13.3) | ||
| Hand washing after toilet | ||||
| Yes | 938 (90.1) | 136 (14.5) | 0.52 [0.32,1.9] | 0.01 |
| No | 103 (9.9) | 25 (24.3) | ||
| Eating with unwashed hands | ||||
| Yes | 348 (33.4) | 74 (21.3) | 1.88 [1.33,2.64] | 0.0004 |
| No | 693 (66.6) | 87 (12.5) | ||
| Eating unwashed vegetables | ||||
| Yes | 796 (76.5) | 123 (15.4) | 0.99 [0.67,1.47] | 1.00 |
| No | 245 (23.5) | 38 (15.5) | ||
| Contact with soil | ||||
| Yes | 38 (3.7) | 29 (76.3) | 21.26 [9.48,45.93] | <0.0001 |
| No | 1003 (96.3) | 132 (13.1) | ||
| Contact with cat or dog | ||||
| Yes | 95 (9.1) | 21 (22.1) | 1.63 [0.97,2.74] | 0.07 |
| No | 946 (90.9) | 140 (14.8) | ||
| Number living in home | ||||
| 2-4 | 615 (59.1) | 107 (17.4 ) | 1.45[1.01,2.06] | 0.04 |
| ≥5 | 426 (40.9) | 54 (12.7) |