Patient characteristics diagnostic accuracy study
| Patients with gout (n=43) | Patients without gout (n=48) | |
|---|---|---|
| Age, mean (SD), years | 62.1 (13.2) | 58.7 (13.7) |
| Sex | ||
| Male | 34 (79) | 19 (40) |
| Female | 9 (21) | 29 (60) |
| Index joint | ||
| MCP/PIP | 3 (7) | 4 (8) |
| Wrist | 2 (5) | 2 (4) |
| Elbow | 1 (2) | 0 (0) |
| MTP | 26 (60) | 18 (38) |
| Mid-foot/ankle | 9 (21) | 9 (19) |
| Knee | 2 (5) | 15 (31) |
| Symptom duration (week) | NA | |
| ≤6 | 29 (67) | – |
| >6 | 14 (33) | – |
| Prior history of gout | 15 (35) | NA |
| Serum UA, mean (SD), mg/dL | 8.0 (2.0) | NA |
| Referral diagnosis | ||
| Gout | 40 (93) | 2 (4) |
| DJD | – | 21 (44) |
| RA | – | 12 (25) |
| Septic joint | – | 1 (2) |
| CTD | – | 1 (2) |
| CPPD | 1 (2) | 3 (6) |
| Unknown | 2 (5) | 7 (15) |
Except where stated otherwise, values are the number (%) of patients.
CPPD, calcium pyrophosphate deposition disease; CTD, connective tissue disease; DJD, degenerative joint disease; MCP, metacarpophalangeal joint; MTP, metatarsophalangeal joint; n, number; PIP, proximal interphalangeal joint; RA, rheumatoid arthritis; UA, uric acid.