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Table 2 Weighted linear regression estimates of predictor variables on outcome variable (age at diagnosis of diabetes)

From: Risk factors associated with age at diagnosis of diabetes among noninstitutionalized US population: the 2015–2016 National Health and Nutrition Examination Survey

    95% Confidence interval
Age when first told you had diabetes Coefficient p-value Lower limit Upper limit
Body Mass Index* − 1.03 0.00 −1.40 −0.66
Upper leg length (cm)* −0.91 0.00 −1.28 −0.54
Average Sagittal Abdominal Diameter (cm)** 1.24 0.02 0.20 2.27
Waist Circumference (cm) 0.06 0.70 −0.25 0.36
Country of birth (born in the US) −0.30 0.84 −3.44 2.84
Gender (Male)** 3.41 0.03 0.36 6.45
Education level - Adults 20+
 College graduate or above (referent)
 Less than 9th grade −2.14 0.28 −6.21 1.92
 9-11th grade and 12th grade no diploma −2.54 0.29 −7.44 2.36
 High school graduate/GED or equivalent** −5.40 0.01 −8.98 −1.81
 Some college or AA degree* −7.58 0.00 −11.33 −3.83
Marital status
 Married (referent)
 Widowed 3.80 0.06 −0.15 7.74
 Divorced 2.15 0.28 −1.92 6.23
 Separated −0.22 0.96 −9.54 9.99
 Never married* −9.13 0.00 −14.86 − 3.40
 Living with partner −2.53 0.20 −6.60 1.53
Race/Hispanic origin
 Non-Hispanic White (referent)
 Mexican American** − 5.00 0.02 −8.89 −1.12
 Other Hispanic −3.02 0.18 −7.55 1.51
 Non-Hispanic Black −2.70 0.06 −5.54 0.13
 Other Race - Including Multi-Racial −0.74 0.77 −5.54 4.45
Annual household income
 $ 0 to $ 19,999 (referent)
 $ 20,000 or more 1.81 0.25 −5.92 5.05
Total number of people in the Household* −1.72 0.00 −2.42 − 1.02
Glucose, refrigerated serum (mg/dL)** −0.02 0.01 − 0.03 − 0.01
Constant 88.71 0.00 66.80 110.63
  1. **p < 0.05
  2. *p < 0.01