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. Author manuscript; available in PMC: 2018 Oct 1.
Published in final edited form as: J Diabetes Complications. 2017 Jun 3;31(10):1515–1520. doi: 10.1016/j.jdiacomp.2017.05.015

Table 3.

Odds ratio for incident diabetes, according to H. pylori status in participants at risk for diabetes in the Diabetes and Prevention Program study by race/ethnicity, baseline body mass index, age and DPP intervention arm.

H. pylori status P-value1 P for interaction6
Negative Positive
Race/ethnicity 2
  Non-Hispanic White 1.00 (reference) 1.22 (0.81, 1.86) 0.35 0.25
  Other 1.00 (reference) 0.88 (0.59, 1.32) 0.53
Body Mass Index (kg/m2) 3
  BMI < 30 1.00 (reference) 1.10 (0.66, 1.83) 0.73 0.08
  BMI ≥ 30 1.00 (reference) 1.03 (0.72, 1.47) 0.87
Age (median, years) 4
  < 57 1.00 (reference) 1.00 (0.71, 1.41) 0.99 0.84
  ≥ 57 1.00 (reference) 1.14 (0.64, 2.02) 0.65
DPP Arm
  Lifestyle 1.00 (reference) 1.00 (0.59, 1.68) 0.99 0.87
  Placebo 1.00 (reference) 1.05 (0.74, 1.49) 0.79
1

P-values for subgroup analyses are based on logistic regression adjusted for matching factors (age [years], sex [male or female], race/ethnicity [Non-Hispanic White vs. Other], DPP intervention arm [lifestyle or placebo]) and length of follow up.

2

Model for White includes 228 cases and controls; model for non-White includes 193 cases and controls.

3

Model for BMI<30 kg/m2 includes 110 cases and 149 controls; model for BMI≥30 kg/m2 includes 311 cases and 272 controls

4

Model for age<57 years includes 318 cases and 316 controls; model for age≥57 years includes 103 cases and 105 controls

5

Model for DPP lifestyle arm includes 139 cases and controls; model for placebo arm includes 282 cases and controls.

6

P-values for interaction effect are adjusted for matched variables (age [years], sex [male or female], race/ethnicity [Non-Hispanic White vs. Other], intervention arm [lifestyle or placebo]) and length of follow up through conditional logistic regression.