Table 1.
Self-reported characteristics of NHANES reference population and KEEP participants without and with inverse probability weighting, 2001–2012.
| NHANES (n = 28,517) | KEEP (n = 127,149) | ||||
|---|---|---|---|---|---|
| n | Weighted % | n | Unweighted% | Weighted % | |
| Age | |||||
| 20–39 | 9,396 | 36.9 | 21,625 | 17.0 | 35.9 |
| 40–59 | 9,317 | 39.4 | 54,931 | 43.2 | 39.4 |
| 60–69 | 4,526 | 11.9 | 27,423 | 21.6 | 12.5 |
| 70+ | 5,278 | 11.8 | 23,170 | 18.2 | 12.2 |
| Female | 14,230 | 51.1 | 86,076 | 67.7 | 52.2 |
| Race/Ethnicity | |||||
| Mexican American/Other Hispanic | 7,116 | 12.8 | 16,275 | 12.8 | 14.9 |
| non-Hispanic White | 13,852 | 70.8 | 57,078 | 44.9 | 68.8 |
| non-Hispanic Black | 5,737 | 10.5 | 40,577 | 31.9 | 11.2 |
| Other | 1,812 | 5.9 | 13,219 | 10.4 | 5.2 |
| Diabetes | 3,736 | 9.6 | 36,309 | 28.6 | 8.5 |
| Hypertension | 9,777 | 29.7 | 69,813 | 54.9 | 31.6 |
| Chronic kidney disease | 731 | 2.0 | 5,562 | 4.4 | 1.7 |
| CHF/CAD/Stroke | 3,236 | 8.5 | 15,885 | 12.5 | 8.4 |
| Diabetes family history | 12,162 | 40.8 | 71,001 | 55.8 | 44.0 |
| Heart attack family history | 3,599 | 13.8 | 43,885 | 34.5 | 13.3 |
| Weight status | |||||
| Overweight | 9,782 | 33.9 | 41,409 | 32.6 | 36.6 |
| Obese | 9,783 | 32.9 | 46,480 | 36.6 | 35.8 |
| Smoking status | |||||
| Smoker | 6,313 | 22.8 | 13,145 | 10.3 | 22.1 |
| Former smoker | 7,248 | 24.8 | 32,981 | 25.9 | 25.0 |
| Insurance | |||||
| None reported | 6,534 | 19.3 | 27,816 | 21.9 | 18.3 |
| Insured | 19,773 | 75.5 | 91,718 | 72.1 | 76.9 |
| Medicaid | 2,210 | 5.2 | 7,615 | 6.0 | 4.9 |
| Education | |||||
| Less than high school or GED | 8,080 | 18.4 | 19,642 | 15.4 | 18.9 |
| High school or GED | 6,684 | 24.1 | 32,702 | 25.7 | 22.9 |
| Greater than school graduate | 13,753 | 57.5 | 74,805 | 58.8 | 58.2 |
CHF/CAD/stroke – congestive heart failure/coronary artery disease or stroke; CKD – chronic kidney disease; KEEP – Kidney Early Evaluation Program; NHANES - National Health and Nutrition Examination Survey.