Table 2.
The prevalence of metal allergies in cases (n = 356) and matched controls (n = 712) from the patch-test database at Gentofte Hospital, Denmark
| Cases (n = 356) % (n) | Controls (n = 712) % (n) | p-value a | |
| Metal allergy b | 14 (51) | 14 (97) | 1.0 |
| Nickel allergy | 10 (36) | 9.8 (70) | 0.8 |
| Cobalt allergy | 5.3 (19) | 5.2 (37) | 0.5 |
| Chromium allergy | 3.1 (11) | 3.9 (28) | 0.4 |
a Comparison of cases and controls matched by sex and by age in
years (conditional logistic regression analysis).
b Metal allergy was defined as a positive patch-test reaction to nickel, cobalt or chromium.