Table 1 Demographics for the 42,238 individuals with bilateral THA operated 1992-2012
Op same day (n = 1,680) | Op ≤ 6 months (n = 4, 867) | Op 7–12 months (n = 7,809) | Op > 12 months (n = 27, 882) | p-value | |||||
|---|---|---|---|---|---|---|---|---|---|
n | % | n | % | n | % | n | % | ||
Age | |||||||||
<50 | 308 | 18.3 | 357 | 7.3 | 454 | 5.8 | 831 | 3.0 | <0.001a |
50-59 | 424 | 25.2 | 823 | 19.0 | 1,278 | 16.4 | 3,052 | 10.9 | |
60-75 | 788 | 46.9 | 2,792 | 57.4 | 4,499 | 57.6 | 15,357 | 55.1 | |
>75 | 160 | 9.5 | 795 | 16.3 | 1,578 | 20.2 | 8,642 | 31.0 | |
Diagnoses | |||||||||
OA | 1,346 | 80.4 | 4,309 | 88.8 | 7,112 | 91.4 | 26,012 | 93.4 | <0.001a |
RA | 193 | 11.5 | 279 | 5.7 | 316 | 4.1 | 1,033 | 3.7 | |
Otherb | 136 | 8.1 | 266 | 5.5 | 351 | 4.5 | 819 | 2.9 | |
Sex | |||||||||
Male | 767 | 45.7 | 2,074 | 42.6 | 3,176 | 40.7 | 11,106 | 39.8 | <0.001a |
Female | 913 | 54.3 | 2,793 | 57.4 | 4,633 | 59.3 | 16,776 | 60.2 | |
Fixation | |||||||||
Cemented | 931 | 55.8 | 3.697 | 76.5 | 6,224 | 80.1 | 22,984 | 82.6 | <0.001a |
Uncemented | 372 | 22.3 | 563 | 11.6 | 686 | 8.8 | 2,147 | 7.7 | |
Otherc | 364 | 21.8 | 575 | 11.9 | 856 | 11.0 | 2,683 | 9.6 | |