Table 1.
Cohort demographics
| Characteristics | n=427,616 | % |
|---|---|---|
| Age (Mean±SD) | 26.4±0.6 | - |
|
| ||
| Age groups | ||
| <1 y | 42,801 | 10.0 |
| 1 y | 8,790 | 2.1 |
| 2–5 y | 24,846 | 5.8 |
| 6–11 y | 37,046 | 8.7 |
| 12–18 y | 53,708 | 12.6 |
| 19–21 y | 21,560 | 5.0 |
| >21 y | 238,866 | 55.9 |
|
| ||
| Gender | ||
| male | 188,236 | 44.0 |
| female | 238,865 | 55.9 |
|
| ||
| Race | ||
| White | 228,047 | 53.3 |
| Black | 31,756 | 7.4 |
| Hispanic | 52,212 | 12.2 |
| Asian | 3,213 | 0.8 |
| Native American | 2,090 | 0.5 |
| Others | 10,112 | 2.4 |
|
| ||
| Year | ||
| 1998 | 21,141 | 4.9 |
| 1999 | 26,557 | 6.2 |
| 2000 | 23,216 | 5.4 |
| 2001 | 26,108 | 6.1 |
| 2002 | 27,768 | 6.5 |
| 2003 | 27,482 | 6.4 |
| 2004 | 30,068 | 7.0 |
| 2005 | 36,461 | 8.5 |
| 2006 | 32,355 | 7.6 |
| 2007 | 32,603 | 7.6 |
| 2008 | 34,288 | 8.0 |
| 2009 | 35,648 | 8.3 |
| 2010 | 37,585 | 8.8 |
| 2011 | 36,338 | 8.5 |
|
| ||
| Insurance | ||
| Public | 254,798 | 59.6 |
| Private | 145,482 | 34.0 |
| others | 26,391 | 6.2 |
|
| ||
| Income | ||
| quartile 1 | 87,630 | 20.5 |
| quartile 2 | 80,503 | 18.8 |
| quartile 3 | 72,882 | 17.0 |
| quartile 4 | 54,204 | 12.7 |
|
| ||
| Surgery | ||
| augmentation | 5,748 | 1.3 |
| vesicostomy | 3,881 | 0.9 |
| sphincterotomy | 76 | <0.1 |
| conduit | 1,173 | 0.3 |
| Mitrofanoff | 1,015 | 0.2 |
| botox | 1,105 | 0.3 |
|
| ||
| Renal failure | ||
| Yes | 35,249 | 8.2 |
| No | 392,368 | 91.8 |
|
| ||
| Region | ||
| Northeast | 74,504 | 17.4 |
| Midwest | 109,417 | 25.6 |
| South | 160,079 | 37.4 |
| West | 83,617 | 19.6 |
|
| ||
| Hospital teaching status | ||
| Non-teaching | 139,913 | 32.7 |
| Teaching | 284,839 | 66.6 |
|
| ||
| Hospital bedsize | ||
| Small | 62,576 | 14.6 |
| Medium | 94,012 | 22.0 |
| Large | 268,164 | 62.7 |