Table 1.
Primary hip arthroplasties (ICD-9 81.51), 1990–2004, N =2,288,579 | ||||||||
---|---|---|---|---|---|---|---|---|
Period | 1990–1994 | 1995–1999 | 2000–2004 | 1990–2004 | ||||
N (% of total) | 603,528 | 26.37 | 731921 | 31.98 | 953,130 | 41.65 | 2,288,579 | 100.00 |
Age in years (range)a | 67.03 (6–99) | 67.19 (13–99) | 66.08 (18–99) | 66.68 (6–99) | ||||
Age groups | ||||||||
<45a (POI1 and 2 and POI1 and 3 only) | 49,716 | 8.24 | 48,907 | 6.68 | 64,336 | 6.75 | 162,959 | 7.12 |
46–64a | 149,393 | 24.75 | 198,905 | 27.18 | 326,889 | 34.30 | 675,187 | 29.50 |
65–79a(POI1 and 3 and POI2 and 3 only) | 365,940 | 60.63 | 443,428 | 60.58 | 512,862 | 53.81 | 1,322,230 | 57.78 |
85+a | 38,479 | 6.38 | 40,681 | 5.56 | 49,043 | 5.15 | 128,203 | 5.60 |
Genderb | ||||||||
Malea | 243,495 | 40.35 | 303,583 | 41.48 | 408,303 | 42.84 | 955,381 | 41.75 |
Femalea | 360,033 | 59.66 | 428,338 | 58.52 | 544,827 | 57.16 | 1,333,198 | 58.25 |
Race* | ||||||||
Whitea | 452,691 | 75.01 | 501,914 | 68.58 | 628,157 | 65.91 | 1,582,762 | 69.16 |
Blacka | 24,298 | 4.03 | 38,022 | 5.20 | 50,574 | 5.31 | 112,894 | 4.93 |
Othera | 10,296 | 1.71 | 13,369 | 1.83 | 13,496 | 1.42 | 37,161 | 1.62 |
Not stateda | 11,6243 | 19.26 | 178,616 | 24.40 | 260,903 | 27.37 | 555,762 | 24.28 |
Discharge statusb | ||||||||
Routine discharge to homea | 375,775 | 62.26 | 348,626 | 47.63 | 423,627 | 44.45 | 1,148,028 | 50.16 |
Left against medical advicea (POI1 and 2 and POI1 and 3 only) | 1,614 | 0.27 | 120 | 0.02 | 168 | 0.02 | 1,902 | 0.08 |
Discharge to short-term facilitya | 39,737 | 6.58 | 68,572 | 9.37 | 96,170 | 10.09 | 204,479 | 8.94 |
Discharge to long-term facilitya (POI1 and 2 and POI 1 and 3 only) | 97,139 | 16.10 | 181,079 | 24.74 | 235,263 | 24.68 | 513,481 | 22.44 |
Alive disposition not stateda | 77,437 | 12.83 | 122,529 | 16.74 | 170,369 | 17.88 | 370,335 | 16.18 |
Deada (POI 1 and 3 and POI 2 and 3 only) | 1,977 | 0.33 | 2,446 | 0.33 | 2,839 | 0.30 | 7,262 | 0.32 |
Not stated or reporteda | 9,849 | 1.63 | 8,549 | 1.17 | 24,694 | 2.59 | 43,092 | 1.88 |
Bed sizeb | ||||||||
6–99a | 74,520 | 12.35 | 114,748 | 15.68 | 242,868 | 25.48 | 432,136 | 18.88 |
100–199a | 154,988 | 25.68 | 197,771 | 27.02 | 228,501 | 23.97 | 581,260 | 25.40 |
200–299a | 134,831 | 22.34 | 146,871 | 20.07 | 194,213 | 20.38 | 475,915 | 20.80 |
300–499a | 172,922 | 28.65 | 190,649 | 26.05 | 182,937 | 19.19 | 546,508 | 23.88 |
500+a (POI1 and 2 and POI2 and 3 only) | 66,267 | 10.98 | 81,882 | 11.19 | 104,611 | 10.98 | 252,760 | 11.04 |
Regionb | ||||||||
Northeasta | 133,397 | 22.10 | 159,541 | 21.80 | 232,522 | 24.40 | 525,460 | 22.96 |
Midwesta | 172,362 | 28.56 | 201,757 | 27.57 | 256,897 | 26.95 | 631,016 | 27.57 |
Southerna | 177,790 | 29.46 | 213,484 | 29.17 | 289,605 | 30.39 | 680,879 | 29.75 |
Westerna | 119,979 | 19.88 | 157,139 | 21.47 | 174,106 | 18.27 | 451,224 | 19.72 |
Insuranceb | ||||||||
Medicarea | 377,515 | 62.55 | 434,217 | 59.33 | 409,861 | 43.00 | 1,221,593 | 53.38 |
Medicaida | 16,690 | 2.77 | 24,135 | 3.30 | 29,507 | 3.10 | 70,332 | 3.07 |
Privatea | 159,214 | 26.38 | 233,905 | 31.96 | 311,526 | 32.69 | 704,645 | 30.79 |
Othera | 35,718 | 5.92 | 35,024 | 4.79 | 197,663 | 20.74 | 268,405 | 11.73 |
Not stateda | 14,391 | 2.38 | 4,640 | 0.63 | 4,573 | 0.48 | 23,604 | 1.03 |
Length of care in days (range)c | 8.74 (1–315) | 5.17 (1–170) | 4.45 (1–312) | 5.81 (1–315) |
POI period of interest, POI1 = 1990–1994, POI2 = 1995–1999, POI3 = 2000–2004
a Significant differences found between all POIs (or POIs specified in parentheses) within variable using Z-score
b Significant differences found across categories within variable using chi square test
c Significant differences between POI using general linear model