Table 2.
Patient demographics
|
|
Total
|
Aseptic cases
|
Infected cases
|
P
value
|
| n | 53 | 31 | 22 | |
| Sex | 0.221 | |||
| Male | 14 (26.4) | 6 (19.4) | 8 (36.4) | |
| Female | 39 (73.6) | 25 (80.6) | 14 (63.6) | |
| Age (range) | 68 (47-85) | 67 (47-85) | 70 (52-85) | 0.302 |
| Laterality | > 0.991 | |||
| Right knee | 28 (52.8) | 16 (51.6) | 12 (54.5) | |
| Left knee | 25 (47.2) | 15 (48.4) | 10 (45.5) | |
| Inflammatory disease | 12 (22.6) | 7 (22.6) | 5 (22.7) | > 0.991 |
| RA | 10 (18.9) | 7 (22.6) | 3 (13.6) | |
| Gout | 2 (3.8) | 0 | 2 (9.1) | |
| Sinus tract | 4 (7.5) | 0 | 4 (18.2) | |
| Alpha-defensin S/CO | 2.21 ± 2.73 | 0.28 ± 0.13 | 4.93 ± 2.28 | < 0.013 |
1
Fisher's exact test.
2
Unpaired t test.
3
Mann-Whitney test. Values expressed in number (percentage). Age in years is presented as mean (range) and alpha-defensin S/CO in mean (standard deviation). RA: Rheumatoid arthritis.