| Two years | Five years | ||||
---|---|---|---|---|---|---|
Variable | Events for responders | Odds ratio (95% CI) | P-value | Events for responders | Odds ratio (95% CI) | P-value |
Gender | Â | Â | Â | Â | Â | Â |
 Female | 1976/4736 (41.7%) |  |  | 1244/3281 (37.9%) |  |  |
 Male | 1847/4418 (41.8%) | 1.0 (0.9 to 1.1) | 0.94 | 1130/2962 (38.1%) | 1.0 (0.9 to 1.1) | 0.85 |
Age Category | Â | Â | Â | Â | Â | Â |
 < 60 | 1176/2988 (39.4%) |  |  | 737/2075 (35.5%) |  |  |
 61 to 70 | 1204/2676 (45%) | 1.3 (1.1 to 1.4) | <0.01 | 791/1893 (41.8%) | 1.3 (1.1 to 1.5) | <.01 |
 71 to 80 | 1121/2706 (41.4%) | 1.1 (1.0 to 1.2) | 0.12 | 706/1841 (38.3%) | 1.1 (1.0 to 1.3) | 0.08 |
 >80 | 322/784 (41.1%) | 1.1 (0.9 to 1.3) | 0.40 | 140/434 (32.3%) | 0.9 (0.7 to 1.1) | 0.20 |
BMI Category | Â | Â | Â | Â | Â | Â |
 <25 | 935/2221 (42.1%) |  |  | 571/1570 (36.4%) |  |  |
 25 to 29.9 | 1493/3477 (42.9%) | 1.0 (0.9 to 1.2) | 0.54 | 954/2393 (39.9%) | 1.2 (1.0 to 1.3) | 0.03 |
 30 to 34.9 | 907/2209 (41.1%) | 1.0 (0.8 to 1.1) | 0.49 | 548/1479 (37.1%) | 1.0 (0.9 to 1.2) | 0.70 |
 35 to 39.9 | 309/786 (39.3%) | 0.9 (0.8 to 1.1) | 0.19 | 187/515 (36.3%) | 1.0 (0.8 to 1.2) | 0.98 |
 >40 | 161/419 (38.4%) | 0.9 (0.7 to 1.1) | 0.17 | 102/259 (39.4%) | 1.1 (0.9 to 1.5) | 0.38 |
ASA Score | Â | Â | Â | Â | Â | Â |
 1 to 2 | 2410/5608 (43%) |  |  | 1539/3950 (39%) |  |  |
 3 to 4 | 1396/3509 (39.8%) | 0.9 (0.8 to 1.0) | <0.01 | 823/2261 (36.4%) | 0.9 (0.8 to 1.0) | 0.05 |
Charlson Index (5 point increase) | N/A | 0.8 (0.7 to 0.9) | Â | N/A | 0.9 (0.7 to 1.0) | 0.05 |
Distance Category | Â | Â | Â | Â | Â | Â |
 0 to 100 miles | 1785/4145 (43.1%) |  |  | 1093/2743 (39.8%) |  |  |
 >100 to 500 miles | 1531/3695 (41.4%) | 0.9 (0.9 to 1.0) | 0.16 | 935/2520 (37.1%) | 0.9 (0.8 to 1.0) | 0.05 |
 >500 miles or non-US | 381/988 (38.6%) | 0.8 (0.7 to 1.0) | 0.01 | 220/675 (32.6%) | 0.7 (0.6 to 0.9) | <0.01 |
Operative Diagnosis | Â | Â | Â | Â | Â | Â |
 Inflammatory arthritis | 94/251 (37.5%) |  |  | 71/205 (34.6%) |  |  |
 AVN | 257/687 (37.4%) | 1.0 (0.7 to 1.4) | 0.99 | 176/519 (33.9%) | 1.0 (0.7 to 1.4) | 0.86 |
 Osteoarthritis | 3355/7825 (42.9%) | 1.3 (1.0 to 1.6) | 0.10 | 2030/5218 (38.9%) | 1.2 (0.9 to 1.6) | 0.23 |
 Other | 117/391 (29.9%) | 0.7 (0.5 to 1.0) | 0.05 | 97/301 (32.2%) | 0.9 (0.6 to 1.3) | 0.59 |