Table 1 Sample demographics by geographical region among U.S. adults with kidney disease (KD)
Variables | All (%) | Northeast (%) | Midwest (%) | South (%) | West (%) | P-value |
|---|---|---|---|---|---|---|
N (n) | 4,251,128 (4404) | 797,487 (683) | 880,779 (869) | 1,746,049 (1870) | 826,813 (982) | |
Age category | ||||||
Age 18–44 | 29.6 | 29.7’ | 30.1 | 29.7 | 29.0 | 0.799 |
Age 45–64 | 36.6 | 38.7 | 37.5 | 36.0 | 34.5 | |
Age 65–85 | 33.8 | 31.6 | 32.4 | 34.3 | 36.5 | |
Gender | ||||||
Male | 51.2 | 49.8 | 52.8 | 51.2 | 50.9 | 0.885 |
Female | 48.8 | 50.2 | 47.2 | 48.8 | 49.1 | |
Race/ethnicity | ||||||
Non-Hispanic White | 73.6 | 75.9 | 83.2 | 73.0 | 62.5 | <0.001 |
Non-Hispanic Black | 11.3 | 9.7 | 11.8 | 14.4 | 5.5 | |
Hispanic | 11.1 | 10.6 | 3.1 | 9.8 | 22.9 | |
Other | 4.0 | 3.8 | 1.9 | 2.8 | 9.1 | |
Marital status | ||||||
Married | 56.9 | 57.4 | 60.5 | 55.1 | 56.5 | 0.254 |
Non-married a | 28.6 | 25.0 | 27.0 | 30.7 | 29.5 | |
Never married | 14.5 | 17.6 | 12.5 | 14.2 | 14.0 | |
Education category | ||||||
< High school | 21.9 | 17.8 | 20.4 | 24.2 | 22.7 | 0.011 |
High school | 33.1 | 40.3 | 35.1 | 30.3 | 29.8 | |
College or more | 45.0 | 41.9 | 44.5 | 45.5 | 47.5 | |
Insurance | ||||||
Private | 64.4 | 68.9 | 67.5 | 64.0 | 57.4 | <0.001 |
Public | 28.2 | 26.1 | 28.3 | 26.7 | 33.3 | |
Uninsured | 7.4 | 5.0 | 4.2 | 9.3 | 9.3 | |
Metropolitan statistical status | ||||||
MSA | 81.3 | 86.3 | 73.1 | 81.1 | 85.6 | 0.014 |
Non-MSA | 18.7 | 13.7 | 26.9 | 18.9 | 14.4 | |
Poverty category | ||||||
Poor/NEA | 19.6 | 18.5 | 16.9 | 20.3 | 22.4 | <0.001 |
Low Income | 15.5 | 14.1 | 17.7 | 15.1 | 15.2 | |
Middle Income | 28.6 | 26.1 | 29.6 | 29.0 | 28.8 | |
High Income | 36.3 | 41.3 | 35.8 | 35.6 | 33.6 | |
Chronic conditions | ||||||
Diabetes | 28.9 | 25.6 | 28.3 | 29.6 | 31.5 | |
Hypertension | 56.1 | 52.2 | 56.2 | 56.6 | 59.0 | 0.347 |
CVD | 30.4 | 28.3 | 29.9 | 30.6 | 32.3 | 0.679 |
Stroke | 8.4 | 7.9 | 8.3 | 7.8 | 10.1 | 0.642 |
Emphysema | 4.1 | 3.2 | 3.2 | 4.7 | 4.3 | 0.457 |
Joint pain | 51.0 | 44.6 | 51.9 | 52.8 | 52.6 | 0.022 |
Arthritis | 41.9 | 39.9 | 44.1 | 43.5 | 38.2 | 0.162 |
Asthma | 11.5 | 11.0 | 10.0 | 11.9 | 12.8 | 0.521 |
Year category | ||||||
Year 2002/03 | 17.7 | 18.4 | 18.9 | 17.6 | 16.0 | 0.901 |
Year 2004/05 | 18.4 | 17.3 | 19.6 | 18.5 | 17.8 | |
Year 2006/07 | 19.3 | 20.9 | 19.1 | 18.6 | 19.5 | |
Year 2008/09 | 20.9 | 22.2 | 20.6 | 20.0 | 22.0 | |
Year 2010/11 | 23.7 | 21.2 | 21.8 | 25.3 | 24.7 | |
Access | ||||||
Usual source of care | 89.7 | 93.4 | 90.6 | 88.1 | 88.8 | 0.004 |
Medical access | 82.1 | 88.1 | 82.6 | 81.2 | 77.9 | <0.001 |
Prescription access | 91.8 | 94.4 | 92.2 | 90.8 | 90.8 | 0.064 |