Table 1—

Characteristics of participants aged 18–64 years*

VariablesDiagnosed diabetes (n = 704)
Undiagnosed diabetes (n = 110)
Nondiabetic population (n = 4,782)
nWeighted % or meannWeighted % or meannWeighted % or mean
Mean age (in years)  49.9  50.2  39.0
Sex (female) 363 48.7 47 36.8 2,539 51.7
Race (non-Hispanic white) 217 58.3 47 68.4 2,215 71.2
Race (black) 201 18.4 25 13.0 993 11.2
Race (Hispanic) 261 17.4 34 14.2 1,426 13.5
Race (others) 25 6.0 4.4 148 4.2
Marital status (married) 401 57.3 60 56.7 2,319 55.1
Educational attainment
Less than high school 300 28.7 53 32.8 1,441 19.0
High school 152 23.7 19 22.7 1,200 26.2
More than high school 252 47.5 38 44.6 2,141 54.8
Family income <$20,000 per year 266 29.6 43 26.6 1,389 22.2 Mean BMI (kg/m2 32.9 34.1 27.6 Self-rated health Good, very good, or excellent 335 55.3 74 73.6 4,007 86.4 Fair or poor 369 44.7 36 26.4 770 13.6 VariablesDiagnosed diabetes (n = 704) Undiagnosed diabetes (n = 110) Nondiabetic population (n = 4,782) nWeighted % or meannWeighted % or meannWeighted % or mean Mean age (in years) 49.9 50.2 39.0 Sex (female) 363 48.7 47 36.8 2,539 51.7 Race (non-Hispanic white) 217 58.3 47 68.4 2,215 71.2 Race (black) 201 18.4 25 13.0 993 11.2 Race (Hispanic) 261 17.4 34 14.2 1,426 13.5 Race (others) 25 6.0 4.4 148 4.2 Marital status (married) 401 57.3 60 56.7 2,319 55.1 Educational attainment Less than high school 300 28.7 53 32.8 1,441 19.0 High school 152 23.7 19 22.7 1,200 26.2 More than high school 252 47.5 38 44.6 2,141 54.8 Family income <$20,000 per year 266 29.6 43 26.6 1,389 22.2
Mean BMI (kg/m2 32.9  34.1  27.6
Self-rated health
Good, very good, or excellent 335 55.3 74 73.6 4,007 86.4
Fair or poor 369 44.7 36 26.4 770 13.6
*

Data source: NHANES 1999–2004; analytic population included participants with diagnosed diabetes, undiagnosed diabetes, and no diabetes; all data weighted by morning fasting sample weight.

Twenty of 704 subjects with diagnosed diabetes, 6 of 110 subjects with undiagnosed diabetes, and 121 of 4,782 subjects without diabetes did not report family income; 5 of 4,782 subjects without diabetes did not report their health status. These missing data will not appear in the regression models in Table 3.

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