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TABLE 2.

Logistic Regression Results Predicting the Likelihood of a Person Being Diagnosed With Diabetes at the End of 1 Year From Baseline

PredictorsModel 1 CoefficientModel 2 CoefficientModel 3 Coefficient
Age 0.157*** 0.157*** 0.159*** 
Age × age –0.001*** –0.001*** –0.001*** 
Baseline obesity    
 Low to normal weight (BMI <25 kg/m2–0.374* –0.374* –0.336 
 Overweight (25 ≤BMI <30 kg/m2Ref. Ref. Ref. 
 Obese (BMI ≥30 kg/m20.893*** 0.892*** 0.919*** 
Weight gain in 1 year    
 >5% of weight 0.452** 0.452** 0.457** 
 ≤5% of weight Ref. Ref. Ref. 
Sex    
 Male –0.091 –0.091 –0.090 
 Female Ref. Ref. Ref. 
Race/ethnicity    
 White Ref. Ref. Ref. 
 Hispanic 0.264 0.262 0.205 
 Asian 0.752** 0.746** 0.747** 
 African American 0.116 0.114 0.090 
Household income    
 Low-to-high Ref. Ref. Ref. 
 Near-poor 0.594* 0.594* 0.609** 
 Poor 0.552** 0.553** 0.493** 
Current smoker    
 Yes –0.180 –0.183 –0.193 
 No Ref. Ref. Ref. 
Ever advised to avoid fat foods    
 Yes 0.260 0.26 0.250 
 No Ref. Ref. Ref. 
Ever diagnosed as having high blood pressure other than during pregnancy    
 Yes 0.573*** 0.572*** 0.601*** 
 No Ref. Ref. Ref. 
At least three-fourths of biologically related family members living in the household are obese    
 Yes 0.270* 
 No Ref. 
At least one biologically related family member living in the household has diabetes    
 Yes 0.418* 
 No Ref. 
Of the biologically related family members living in the household:    
 At least one has diabetes  0.620** 0.641** 
 None have diabetes but at least 75% are obese  0.294* 0.298* 
 None have diabetes and <75% are obese Ref. Ref. Ref. 
Constant –10.703*** –10.712*** –10.752*** 
PredictorsModel 1 CoefficientModel 2 CoefficientModel 3 Coefficient
Age 0.157*** 0.157*** 0.159*** 
Age × age –0.001*** –0.001*** –0.001*** 
Baseline obesity    
 Low to normal weight (BMI <25 kg/m2–0.374* –0.374* –0.336 
 Overweight (25 ≤BMI <30 kg/m2Ref. Ref. Ref. 
 Obese (BMI ≥30 kg/m20.893*** 0.892*** 0.919*** 
Weight gain in 1 year    
 >5% of weight 0.452** 0.452** 0.457** 
 ≤5% of weight Ref. Ref. Ref. 
Sex    
 Male –0.091 –0.091 –0.090 
 Female Ref. Ref. Ref. 
Race/ethnicity    
 White Ref. Ref. Ref. 
 Hispanic 0.264 0.262 0.205 
 Asian 0.752** 0.746** 0.747** 
 African American 0.116 0.114 0.090 
Household income    
 Low-to-high Ref. Ref. Ref. 
 Near-poor 0.594* 0.594* 0.609** 
 Poor 0.552** 0.553** 0.493** 
Current smoker    
 Yes –0.180 –0.183 –0.193 
 No Ref. Ref. Ref. 
Ever advised to avoid fat foods    
 Yes 0.260 0.26 0.250 
 No Ref. Ref. Ref. 
Ever diagnosed as having high blood pressure other than during pregnancy    
 Yes 0.573*** 0.572*** 0.601*** 
 No Ref. Ref. Ref. 
At least three-fourths of biologically related family members living in the household are obese    
 Yes 0.270* 
 No Ref. 
At least one biologically related family member living in the household has diabetes    
 Yes 0.418* 
 No Ref. 
Of the biologically related family members living in the household:    
 At least one has diabetes  0.620** 0.641** 
 None have diabetes but at least 75% are obese  0.294* 0.298* 
 None have diabetes and <75% are obese Ref. Ref. Ref. 
Constant –10.703*** –10.712*** –10.752*** 
*

P <0.05;

**

P <0.01;

***

P <0.001.

Bold type indicates statistical significance. Model goodness-of-fit tests: P = 0.784 for Model 1 and P = 0.755 for Model 2; Model 3 presents the results of Model 2 rerun on individuals without imputed BMI. Ref., omitted reference category.

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