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Table 2 Univariate and multivariate analysis of risk factors associated with diabetes and prediabetes in the Khuzestan study

From: Prevalence and determinants of diabetes and prediabetes in southwestern Iran: the Khuzestan comprehensive health study (KCHS)

Variable Prediabetes Diabetes
Unadjusted. RR
(95% CI)
Adjusted. RR*
(95% CI)
Unadjusted. RR
(95% CI)
Adjusted. RR*
(95% CI)
Sex Male     
Female 0.91 (0.87, 0.96) 0.87 (0.82, 0.92) 0.97 (0.91, 1.04) 0.98 (0.91, 1.06)
Age (years) 20–34.9     
35–49.9 1.57 (1.47, 1.66) 1.63 (1.53, 1.73) 5.05 (4.47, 5.69) 5.25 (4.63, 5.95)
50–65 2.45 (2.29, 2.62) 2.61 (2.43, 2.81) 18.86 (16.75, 21.24) 20.54 (18.13, 23.28)
BMI (Kg/m2) < 25     
25–29.9 1.48 (1.39, 1.57) 1.47 (1.38, 1.56) 2.17 (1.99, 2.37) 2.11 (1.93, 2.31)
≥30 1.91 (1.79, 2.04) 1.88 (1.76, 2.01) 3.38 (3.09, 3.69) 3.24 (2.96, 3.56)
Waist circumference (cm) < 90     
≥90 1.70 (1.61, 1.79) 1.66 (1.58, 1.76) 3.77 (3.49, 4.08) 3.62 (3.34, 3.92)
Hypertension No     
Yes 1.73 (1.62, 1.85) 1.71 (1.60, 1.83) 5.19 (4.82, 5.59) 5.09 (4.72, 5.49)
Diabetes family history No     
Yes 1.23 (1.16, 1.30) 1.17 (1.11, 1.24) 2.41 (2.25, 2.57) 2.30 (2.15, 2.46)
Education Illiterate     
Elementary 0.92 (0.86, 0.98) 0.86 (0.80, 0.92) 0.54 (0.50, 0.58) 0.43 (0.40, 0.47)
Secondary 0.75 (0.70, 0.81) 0.67 (0.62, 0.73) 0.32 (0.29, 0.35) 0.21 (0.19, 0.24)
Higher education 0.71 (0.64, 0.79) 0.61 (0.54, 0.68) 0.17 (0.14, 0.20) 0.10 (0.09, 0.13)
  1. *Data are adjusted for cigarette smoking (never vs. ever), hookah smoking (never vs. ever), opium use (never vs. ever), alcohol use (never vs. ever), marital status (single vs. married), residence (urban vs. rural), ethnicity (Arab vs. Bakhtiari vs. Fars vs. Turk/Kurd/Lur), and wealth index (four quartiles)
  2. *RR Relative risk