| Characteristics | Category | Low knowledge (%) | Crude OR (95% CI) | value (crude) | Adjusted OR (95% CI) | value (adjusted) |
| Residence | Urban | 1,344 (28.1) | 1 | | 1 | | Rural | 5,253 (49.17) | 2.48 (2.01, 3.05) | <0.0001 | 1.22 (1.06, 1.41) | 0.006 |
| Age | 15–24 | 2,907 (46.31) | 1 | | 1 | | 25–34 | 2,057 (42.57) | 0.86 (0.76, 0.97) | 0.016 | 0.68 (0.62, 0.75) | <0.0001 | 35–44 | 1,212 (41.5) | 0.82 (0.71, 0.95) | 0.010 | 0.60 (0.54, 0.67) | <0.0001 | 45–49 | 421 (45.36) | 0.96 (0.80, 1.16) | 0.688 | 0.62 (0.53, 0.71) | <0.0001 |
| Current marital status | Never in union | 1,673 (42.11) | 1 | | 1 | | Married | 3,897 (44.66) | 1.11 (0.96, 1.28) | 0.152 | 0.82 (0.74, 0.91) | <0.0001 | Living with partner | 275 (42.96) | 1.04 (0.80, 1.34) | 0.787 | 0.92 (0.77, 1.10) | 0.362 | Widowed | 216 (39.84) | 0.91 (0.71, 1.17) | 0.465 | 0.75 (0.61, 0.93) | 0.009 | Divorced | 400 (52.83) | 1.54 (1.21, 1.96) | <0.0001 | 1.22 (1.04, 1.44) | 0.017 | No longer living together/separated | 136 (44.14) | 1.03 (0.75, 1.40) | 0.876 | 1.03 (0.81, 1.32) | 0.807 |
| Region | Accessible regions | 3,578 (45.4) | 2.19 (1.85, 2.60) | <0.0001 | 0.91 (0.77, 1.08) | 0.293 | Hard to reach regions | 2,013 (41.59) | 1.88 (1.53, 2.30) | <0.0001 | 0.68 (0.54, 0.85) | 0.001 | City administrations | 1,006 (27.51) | 1 | | 1 | |
| Education | No education | 4,013 (52.67) | 6.84 (4.80, 9.76) | <0.0001 | 3.28 (2.52, 4.27) | <0.0001 | Primary | 2,227 (40.09) | 4.12 (2.94, 5.76) | <0.0001 | 1.95 (1.51, 2.51) | <0.0001 | Secondary | 260 (22.41) | 1.78 (1.23, 2.56) | 0.002 | 1.17 (0.89, 1.55) | 0.261 | More than secondary | 97 (13.99) | 1 | | 1 | |
| Wealth quintile | Lowest | 1,873 (55.31) | 3.19 (2.59, 3.94) | <0.0001 | 1.40 (1.20, 1.63) | <0.0001 | Second | 1,162 (50.77) | 2.66 (2.14, 3.31) | <0.0001 | 1.25 (1.07, 1.46) | 0.005 | Middle | 1,094 (49.63) | 2.541 (2.05, 3.15) | <0.0001 | 1.23 (1.06, 1.44) | 0.008 | Fourth | 1,058 (43.69) | 2.00 (1.66, 2.42) | <0.0001 | 1.17 (1.01, 1.35) | 0.035 | Highest | 1,410 (27.93) | 1 | | 1 | |
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