TABLE 4.
General Characteristics of the Study Sample
| Decubitus Ulcer | P | |||||
|---|---|---|---|---|---|---|
| Total | Yes | No | ||||
| n | % | n | % | |||
| n | 9,757,245 | 377,675 | 9,379,570 | |||
| Weighted n (national estimates) | 48,786,216 | 1,888,375 | 3.9% | 46,897,842 | 96.1% | |
| Race | ||||||
| White | 32,419,138 | 1,229,365 | 3.8% | 31,189,773 | 96.2% | <0.0001 |
| Black | 8,269,291 | 395,245 | 4.8% | 7,874,046 | 95.2% | |
| Hispanic | 5,031,349 | 157,095 | 3.1% | 4,874,254 | 96.9% | |
| Asian or Pacific Islander | 1,237,139 | 40,835 | 3.3% | 1,196,304 | 96.7% | |
| Others | 1,829,300 | 65,835 | 3.6% | 1,763,465 | 96.4% | |
| Age groups | ||||||
| <40 | 9,161,183 | 111,900 | 1.2% | 9,049,283 | 98.8% | <0.0001 |
| 40<50 | 3,876,294 | 103,180 | 2.7% | 3,773,114 | 97.3% | |
| 50<60 | 7,035,559 | 228,980 | 3.3% | 6,806,579 | 96.7% | |
| 60<70 | 9,692,093 | 406,105 | 4.2% | 9,285,988 | 95.8% | |
| 70≥ | 19,021,086 | 1,038,210 | 5.5% | 17,982,876 | 94.5% | |
| Sex | ||||||
| Male | 24,015,976 | 977,755 | 4.1% | 23,038,221 | 95.9% | <0.0001 |
| Female | 24,770,240 | 910,620 | 3.7% | 23,859,621 | 96.3% | |
| Median household income | ||||||
| 0–25th percentile | 15,738,868 | 624,235 | 4.0% | 15,114,633 | 96.0% | <0.0001 |
| 26th–50th percentile | 12,760,783 | 481,205 | 3.8% | 12,279,578 | 96.2% | |
| 51st–75th percentile | 11,201,832 | 423,700 | 3.8% | 10,778,133 | 96.2% | |
| 76th to 100th percentile | 9,084,733 | 359,235 | 4.0% | 8,725,498 | 96.0% | |
| Primary payer | ||||||
| Medicare | 26,556,389 | 1,404,740 | 5.3% | 25,151,649 | 94.7% | <0.0001 |
| Medicaid | 8,983,253 | 224,660 | 2.5% | 8,758,593 | 97.5% | |
| Private insurance | 10,153,089 | 200,910 | 2.0% | 9,952,179 | 98.0% | |
| Self-pay | 1,614,150 | 22,445 | 1.4% | 1,591,705 | 98.6% | |
| Others | 1,479,335 | 35,620 | 2.4% | 1,443,715 | 97.6% | |
| Died during hospitalization | ||||||
| No | 47,143,786 | 1,736,885 | 3.7% | 45,406,902 | 96.3% | <0.0001 |
| Yes | 1,642,430 | 151,490 | 9.2% | 1,490,940 | 90.8% | |
| Bed size of the hospital | ||||||
| Small | 9,048,110 | 369,565 | 4.1% | 8,678,546 | 95.9% | <0.0001 |
| Medium | 13,547,895 | 537,970 | 4.0% | 13,009,926 | 96.0% | |
| Large | 26,190,211 | 980,840 | 3.7% | 25,209,370 | 96.3% | |
| Ownership of hospital | ||||||
| Government, nonfederal | 5,981,096 | 216,220 | 3.6% | 5,764,876 | 96.4% | <0.0001 |
| Private, nonprofit | 36,219,298 | 1,425,840 | 3.9% | 34,793,458 | 96.1% | |
| Private, investor-own | 6,585,822 | 246,315 | 3.7% | 6,339,507 | 96.3% | |
| Teaching status of the hospital | ||||||
| Nonteaching | 12,803,121 | 499,535 | 3.9% | 12,303,586 | 96.1% | 0.003 |
| Teaching | 35,983,096 | 1,388,840 | 3.9% | 34,594,256 | 96.1% | |
| Region of hospital | ||||||
| Northeast | 9,966,528 | 408,595 | 4.1% | 9,557,933 | 95.9% | <0.0001 |
| Midwest | 10,392,581 | 400,835 | 3.9% | 9,991,746 | 96.1% | |
| South | 20,095,702 | 750,415 | 3.7% | 19,345,287 | 96.3% | |
| West | 8,331,405 | 328,530 | 3.9% | 8,002,875 | 96.1% | |