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. Author manuscript; available in PMC: 2026 Jul 29.
Published in final edited form as: Prim Care Diabetes. 2025 Dec 11;20(1):99–105. doi: 10.1016/j.pcd.2025.12.001

Table 2.

Adjusted odds ratios (95 %CI) of potential predicators for diabetes by DM-Belt regions.

non-DM Belt DM Belt Test for
OR (95 %CI) p-value OR (95 %CI) p-value interaction
Race/ethnicity (Ref: NH White) 0.035
 NH Black 1.82 (1.64–2.02) < 0.001 1.54 (1.39–1.71) < 0.001
 Others 1.85 (1.70–2.02) < 0.001 1.47 (1.25–1.73) < 0.001
Urban 0.034
 Yes vs. no 1.02 (0.94–1.10) 0.70 0.93 (0.84–1.03) 0.15
Health insurance 0.78
 Yes vs. no 1.46 (1.28–1.66) < 0.001 1.39 (1.16–1.67) < 0.001
Education (Ref: <HS) 0.78
 HS 0.80 (0.68–0.96) 0.01 0.79 (0.59–1.05) 0.10
 Associate 0.81 (0.68–0.96) 0.018 0.79 (0.59–1.07) 0.13
 ≥ College 0.69 (0.57–0.82) < 0.001 0.62 (0.45–0.84) 0.002
 Test for trend < 0.001 < 0.001
Household income (Ref: < [20]K) 0.70
 20 K - 34 K 0.70 (0.63–0.77) < 0.001 0.76 (0.67–0.86) < 0.001
 35 K - 74 K 0.59 (0.54–0.65) < 0.001 0.62 (0.55–0.70) < 0.001
 ≥ 75 K 0.48 (0.44–0.53) < 0.001 0.50 (0.43–0.57) < 0.001
 Test for trend < 0.001 < 0.001
BMI, kg/m2, (Ref 18.5–24) 0.39
 < 18.5 0.80 (0.58–1.10) 0.16 0.59 (0.41–0.85) 0.005
 25–29 1.84 (1.68–2.02) < 0.001 1.93 (1.68–2.21) < 0.001
 ≥ 30 4.58 (4.20–5.00) < 0.001 4.23 (3.70–4.83) < 0.001
 Test for trend < 0.001 < 0.001
Smoking (Ref: No) 0.33
 Formerly smoked 1.18 (1.10–1.26) < 0.001 1.13 (1.03–1.24) 0.01
 Currently smoked 1.13 (1.03–1.23) 0.01 1.05 (0.93–1.19) 0.41
 Test for trend < 0.001 0.24
Veg/fruit (Ref: < [1] serving/d) 0.025
 1–2 Servings/d 0.98 (0.89–1.07) 0.66 0.98 (0.87–1.10) 0.74
 3 Servings/d 1.04 (0.93–1.15) 0.53 1.13 (0.98–1.30) 0.09
 ≥ 4–5 Servings / d 0.89 (0.80–0.99) 0.032 1.02 (0.89–1.17) 0.79
 Test for trend 0.023 0.30
Physical activity (Ref: inactive) 0.94
 Insufficiently active 0.93 (0.85–1.01) 0.086 0.92 (0.82–1.05) 0.21
 Active 0.75 (0.69–0.83) < 0.001 0.82 (0.71–0.95) 0.01
 High active 0.67 (0.62–0.72) < 0.001 0.64 (0.58–0.71) < 0.001
 Test for trend < 0.001 < 0.001
Chronic conditions
 H-TC (yes vs. no) 2.27 (2.13–2.43) < 0.001 2.21 (2.02–2.42) < 0.001 0.28
 HTN (yes vs. no) 2.52 (2.35–2.70) < 0.001 2.33 (2.11–2.58) < 0.001 0.12

NH White: Non-Hispanic White. BMI: Body mass index. Veg/fruit: Vegetable or fruit intake/day. H-TC: Hypercholesterolemia. HTN: Hypertension.

OR: Odds ratios were estimated using SAS Proc Survey logistic regression procedures.

Full adjusted age, sex, and factors in the Table, adjusted each other, except for H-TC and HTN because they were potential mediators.

Test interaction effect of individual factors and DM Belt (yes vs. non) on DM Risk. Interaction term = factor*DM Belt.