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Table 4 Hazard ratio with 95% confidence interval for risk of type 2 diabetes according to waist circumference trajectory group by smoking status (N = 4, 992)

From: Waist circumference trajectories and risk of type 2 diabetes mellitus in Korean population: the Korean genome and epidemiology study (KoGES)

 

Non-smoker (N = 3209)

Ever smoker (N = 1730)

Model1a

Model2b

Model3c

Model1a

Model2b

Model3c

HR (95% CI)

HR (95% CI)

HR (95% CI)

HR (95% CI)

HR (95% CI)

HR (95% CI)

WC Group A

1.0

1.0

1.0

1.0

1.0

1.0

WC Group B

3.0 (1.3–7.2)

3.0 (1.3–7.2)

2.7 (1.1–6.5)

1.4 (0.5–4.6)

1.4 (0.4–4.6)

1.3 (0.4–4.3)

WC Group C

3.0 (1.2–7.2)

3.0 (1.3–7.3)

2.5 (1.0–6.0)

2.2 (0.7–6.6)

2.2 (0.7–6.6)

1.9 (0.6–5.9)

WC Group D

7.9 (3.4–18.7)

8.2 (3.5–19.4)

6.2 (2.6–14.7)

4.4 (1.5–13.3)

4.4 (1.5–13.1)

3.7 (1.2–11.1)

WC Group E

8.4 (3.3–18.7)

8.8 (3.5–22.3)

6.5 (2.5–16.7)

10.7 (3.3–34.3)

10.5 (1.5–33.8)

8.2 (2.5–26.9)

P for trend

<.0001

<.0001

<.0001

0.0003

<.0001

<.0001

P for interaction

0.2280*

  1. Abbreviation: WC waist circumference, HR hazard ratio, CI confidence interval; *there was no interaction between WC trajectories and smoking status
  2. aModel 1: Adjusted for age, age square, sex and family history of type 2 diabetes mellitus at wave 4
  3. bModel 2: Adjusted for Model 2 + alcohol intake, and physical exercise at wave 4
  4. cModel 3: Adjusted for Model 3 + systolic blood pressure, and total cholesterol at wave 4