Table 1 Characteristics among cases with basal cell carcinoma, squamous cell carcinoma, malignant melanoma, and non-Hodgkin's lymphoma and controls (restricted to those cases with no history of organ transplants or cancer before the actual cancer under study)
Basal cell carcinoma | Squamous cell carcinoma | Malignant melanoma | Non-Hodgkin's lymphoma | |||||
|---|---|---|---|---|---|---|---|---|
Cases ( N =5422) | Controls ( N =22457) | Cases ( N =935) | Controls ( N =4166) | Cases ( N =983) | Controls ( N =4406) | Cases ( N =481) | Controls ( N =2004) | |
Demographic characteristics | ||||||||
Age (median) | 68 | 68 | 77 | 77 | 58 | 58 | 64 | 64 |
Gender: male | 50% | 50% | 67% | 68% | 41% | 42% | 53% | 54% |
Anatomic site of skin cancer | ||||||||
Head and neck | 54% | — | 64% | — | 16% | — | — | |
Other sites | 46% | — | 36% | — | 84% | — | — | |
Comorbidities/history of hospitalisation | ||||||||
Chronic pulmonary disease | 299 (6%) | 1234 (6%) | 65 (7%) | 306 (7%) | 25 (3%) | 187 (4%) | 32 (7%) | 100 (5%) |
Connective tissue disease | 123 (2%) | 409 (2%) | 33 (4%) | 74 (2%) | 16 (2%) | 76 (2%) | 13 (3%) | 30 (2%) |
Inflammatory bowel disease | 33 (0.6%) | 136 (0.6%) | 5 (0.5%) | 20 (0.5%) | 5 (0.5%) | 33 (0.8%) | 5 (1%) | 9 (0.5%) |
Allergy | 135 (2%) | 432 (2%) | 24 (3%) | 91 (2%) | 13 (1%) | 90 (2%) | 9 (2%) | 27 (1%) |
Other drug use/prior drug prescriptions: | ||||||||
Methotrexate | 30 (0.6%) | 69 (0.3%) | 2 (0.2%) | 11 (0.2%) | 4 (0.4%) | 16 (0.4%) | 2 (0.4%) | 5 (0.3%) |
Azathioprine | 17 (0.3%) | 57 (0.3%) | 10 (1%) | 8 (0.2%) | 1 (0.1%) | 9 (0.2%) | 1 (0.2%) | 3 (0.2%) |
