Disease characteristics by ethnic extraction. Values are expressed as percentages unless otherwise indicated.
| Characteristics | Ashkenazi, n = 57 | Iraqi, n = 62 | North African, n = 61 | p* |
|---|---|---|---|---|
| Abdominal attacks | 94.7 | 93.5 | 98.4 | NS |
| Chest attacks | 36.8 | 40.3 | 62.3 | 0.01 |
| Joint attacks | 22.8 | 32.3 | 83.6 | < 0.0001 |
| Febrile attacks | 38.6 | 21 | 32.8 | NS |
| Erysipeloid erythema attacks | 0 | 6.5 | 23 | < 0.0001 |
| Pericarditis | 0 | 3.2 | 0 | NS |
| Number of attack sites involved over course of disease (mean ± SD) | 1.9 ± 0.86 | 1.9 ± 1.1 | 3.0 ± 1.1 | < 0.0001 |
| Proteinuria | 5.3 | 1.6 | 18 | 0.002 |
| Renal failure | 0 | 0 | 6.6 | 0.02 |
| Amyloidosis | 3.5 | 0 | 9.8 | 0.026** |
| Colchicine dose (mean ± SD) | 1.2 ± 0.46 | 1.3 ± 0.46 | 1.7 ± 0.57 | 0.001 |
| Explorative laparotomy | 21.1 | 16.1 | 27.9 | NS |
| Severity prior to colchicine therapy—mild/moderate/severe | 42/53/5 | 18/71/11 | 2/62/36 | < 0.0001 |
| Response to colchicine—good/partial/poor | 84/0/16 | 82/2/16 | 56/0/44 | < 0.0001 |