Patient characteristics
| All | PVO | VT | p Value | ||||
|---|---|---|---|---|---|---|---|
| N | (%) | N | (%) | N | (%) | ||
| Total | 7118 | 6807 | 311 | ||||
| Age (years) | |||||||
| ≤59 | 1311 | (18.4) | 1244 | (18.3) | 67 | (21.5) | 0.422 |
| 60–69 | 1693 | (23.8) | 1616 | (23.7) | 77 | (24.8) | |
| 70–79 | 2376 | (33.4) | 2279 | (33.5) | 97 | (31.2) | |
| ≥80 | 1738 | (24.4) | 1668 | (24.5) | 70 | (22.5) | |
| Sex | |||||||
| Male | 4194 | (58.9) | 4038 | (59.3) | 156 | (50.2) | 0.001 |
| Female | 2924 | (41.1) | 2769 | (40.7) | 155 | (49.8) | |
| Haemodialysis | 542 | (7.6) | 530 | (7.8) | 12 | (3.9) | 0.011 |
| Diabetes | 1968 | (27.6) | 1909 | (28.0) | 59 | (19.0) | <0.001 |
| Liver cirrhosis | 137 | (1.9) | 132 | (1.9) | 5 | (1.6) | 0.677 |
| Rheumatoid arthritis | 107 | (1.5) | 103 | (1.5) | 4 | (1.3) | 0.748 |
| Anticoagulant use | 1437 | (20.2) | 1,392 | (20.4) | 45 | (14.5) | 0.010 |
| Malignancy | 1111 | (15.6) | 1061 | (15.6) | 50 | (16.1) | 0.816 |
| IE | 145 | (2.0) | 145 | (2.1) | 0 | (0.0) | 0.009 |
| Aortic aneurysm | 63 | (0.9) | 62 | (0.9) | 1 | (0.3) | 0.278 |
| Spinal surgery | 1537 | (21.6) | 1412 | (20.7) | 125 | (40.2) | <0.001 |
| Type of hospital | |||||||
| Academic | 1264 | (17.8) | 1190 | (17.5) | 74 | (23.8) | 0.004 |
| Non-academic | 5854 | (82.2) | 5617 | (82.5) | 237 | (76.2) | |
| Hospital volume (cases/year) | |||||||
| ≤6 | 2622 | (36.8) | 2516 | (37.0) | 106 | (34.1) | 0.566 |
| 7–10 | 2192 | (30.8) | 2094 | (30.8) | 98 | (31.5) | |
| ≥11 | 2304 | (32.4) | 2197 | (32.3) | 107 | (34.4) | |
IE, infective endocarditis; PVO, pyogenic vertebral osteomyelitis; VT, vertebral tuberculosis.