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. 2019 Aug 28;14(8):e0221726. doi: 10.1371/journal.pone.0221726

Table 3. Estimation of diastolic hypertension and ordinal logistic regression analysis of factors associated with systolic blood pressure in study participants (N = 1952).

Variables Diastolic Blood Pressure(mmHg)
≤ 80 (N = 1632) 81–89 (N = 11) = 196) ≥90 (N = 309) OR [95% CI] P value
Sex
    Male 855 (82.0%) 8 (0.8%) 180 (17.3%) 1.38 (1.01, 1.90) <0.044
    Female 777 (85.5%) 3 (0.3%) 129 (14.2%) 1.00
Age
    ≥ 65 years 192 (71.4%) 1 (0.4%) 76 (28.3%) 3.70 (2.40, 5.70) <0.001
    55–64 years 176 (82.2%) 0 (0.0%) 38 (17.8%) 2.09 (1.29, 3.37) <0.003
    45–54 years 237 (80.6%) 2 (0.7%) 55 (18.7%) 2.03 (1.33, 3.09) <0.001
    35–44 years 413 (84.1%) 4 (0.8%) 74 (15.1%) 1.59 (1.09, 2.31) <0.016
     614 (89.8%) 4 (0.6%) 66 (9.6%) 1.00
BMI
    ≥25kg/m2 101 (64.7%) 2 (1.3%) 53 (34.0%) 2.52 (1.41, 4.48) <0.002
    18.0–24.9kg/m2 1311 (84.9%) 9 (0.6%) 225 (14.6%) 1.12 (0.74, 1.72)
    <18.0kg/m2 220 (87.6%) 0 (0.0%) 31 (12.4%) 1.00
WHtR
    High 459 (75.0%) 4 (0.7%) 149 (24.3%) 0.49 (0.12–0.85) <0.009
    Normal 1173 (87.5%) 7 (0.5%) 160 (11.9%) 1.00
Educational level
    Post-secondary 97 (80.8%) 2 (1.7%) 21 (17.5%) 1.31 (0.69, 2.47)
    Secondary school 155 (83.8%) 1 (0.5%) 29 (15.7%) 1.11 (0.65, 1.88)
    Primary school 628 (85.0%) 5 (0.7%) 106 (14.3%) 0.99 (0.71, 1.39)
    Illiterate 752 (82.8%) 3 (0.3%) 153 (16.9%) 1.00
Family size
    >5 members 1077 (82.5%) 6 (0.5%) 223 (17.1%) 1.20 (0.89, 1.60)
    ≤5 members 555 (85.9%) 5 (0.8%) 86 (13.3%) 1.00
Family income
    >500 birr 689 (84.6%) 5 (0.6%) 120 (14.7%) 0.83 (0.63, 1.09)
    ≤500 birr 943 (82.9%) 6 (0.5%) 189 (16.6%) 1.00
Family HTN
    Yes 99 (75.6%) 0 (0.0%) 32 (24.4%) 1.79 (1.15, 2.80) <0.010
    No 1533 (84.2%) 11 (0.6%) 277 (15.2%) 1.00

WHtR–waist-to-height ratio, HTN–hypertension, BMI–body mass index, OR–odds ratio coefficient, HTN—Hypertension. The test is significant at α < 0.05