Variables Category Knowledge COR 95% CI AOR 95% CI valueGood n (%) Poor n (%) Sex Male 166 (38.2%) 54 (12.4%) 1.00 1.00 Female 132 (30.4) 82 (18.8%) 0.524 (0.35,0.79) 0.61 (0.36,1.01) 0.055 Educational status Unable to read and write 60 (13.8%) 57 (13.1%) 1.00 1.00 Able to read and write without formal education 113 (26.0) 56 (12.9%) 1.917 (1.18,3.11) 1.29 (0.68,2.45) 0.223 Primary school 22 (5.0%) 1.0 (0.23%) 20.9(2.73,160.20) 18.34(2.1,16.70) 0.008 Secondary school 38 (8.7%) 3.0 (0.69%) 12.03 (3.52,41.17) 8.6 (2.11,34.99) 0.003 University/college and above 65 (14.9%) 19 (4.3%) 3.25 (1.74,6.08) 1.86 (0.77,4.50) 0.168 Residence Rural 40 (9.2%) 35 (8.0%) 1.00 1.00 Urban 258 (59.4%) 101 (23%) 2.235 (1.34,3.72) 2.21 (1.09,4.50) 0.028 Hypertension duration (years) <5 186 (42.8%) 101 (23%) 1.00 1.00 5–15 92 (21.1%) 30 (6.9%) 1.66 (1.03,2.69) 2.14 (1.22,3.75) 0.008 >15 20 (4.6%) 5.0 (1.1%) 2.17 (0.79,5.96) 3.02 (0.97,9.40) 0.056 Age group (years) <35 24 (5.5%) 16 (3.6%) 1.00 1.00 35–45 71 (16.3%) 31 (7.1%) 1.53 (0.71,3.27) 1.21(0.5,2.90) 0.666 45–55 64 (14.7%) 28 (6.4%) 1.524 (0.7,3.30) 1.42 (0.58,3.48) 0.442 >55 139 (32%) 61 (14%) 1.53 (0.75,3.06) 1.55 (0.68,3.50) 0.291