| | Variables | Frequency | Percent | Crude OR (95% CI) | Adjusted OR (95% CI) |
| | Area | | Rural | 275 | 77.0% | 1 | 1 | | Urban | 82 | 23.0% | 6.66 (3.52, 12.61) | 3.10 (0.76, 4.31) | | Education of household | | Cannot read and write | 240 | 67.2% | 1 | 1 | | Can read and write | 55 | 15.4% | 2.10 (3.25, 11.18) | 1.98 (1.37, 7.60) | | Grades 1-4 | 12 | 3.4% | 4.74 (1.61, 14.00) | 1.27 (1.71, 9.52) | | Grades 5-8 | 8 | 2.2% | 1.32 (2.87, 6.10) | 1.21 (2.79, 5.26) | | Grades 9-12 | 4 | 1.1% | 1.98 (3.10, 12.67) | 1 | | Graduated | 38 | 10.6% | 3.10 (2.05, 7.02) | 1 | | Household job | | Farmer | 204 | 57.1% | 1 | 1 | | Business man | 61 | 17.1% | 2.37 (1.18, 4.77) | 1.88 (0.86, 4.08) | | Employed | 29 | 8.1% | 0.76 (0.33, 1.73) | 0.82 (0.35, 1.95) | | Student | 24 | 6.7% | 1 | 1 | | Others | 39 | 19% | 0.13 (0.27, 0.64) | 0.12 (0.02, 0.95) | | Average monthly income | | 133 | 37.3% | 1 | 1 | | 101_500 | 110 | 30.8% | 6.39 (3.18, 12.82) | 1.58 (0.64, 3.89) | | 501_ 999 | 46 | 12.9% | 4.08 (2.00, 8.30) | 1.06 (0.04, 2.63) | | | 68 | 19.0% | 2.10 (1.28, 6.91) | 0.86 (0.31, 2.35) | | Salt container | | Container with cover | 317 | 88.8% | 2.08 (1.05, 4.10) | 1.36 (0.65, 2.87) | | Container without cover | 40 | 11.2% | 1 | 1 | | Washing salt before use | | Yes | 71 | 19.9% | 1 | 1 | | No | 286 | 80.1% | 2.93 (2.05, 5.22) | 1.83 (1.75, 2.77) | | Expose to sunlight? | | Yes | 10 | 2.8% | 1 | 1 | | No | 347 | 97.2% | 0.45 (0.27, 0.76) | 0.30 (0.04, 0.57) |
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