Table 3. SIRs for malignant melanoma occurring after a diagnosis of CLL by sex, age and time from diagnosis of CLL.
| Characteristic | Observed | Expected | SIR | 95% CI | P-value |
|---|---|---|---|---|---|
| Total | 6.0 | 2.6 | 2.3 | (0.0, 2.4) | n.s. |
| Male | 4.0 | 1.4 | 2.9 | (0.9, 3.9) | n.s. |
| Female | 2.0 | 1.6 | 1.6 | (0.5, 2.2) | n.s. |
|
Age at diagnosis | |||||
| <50 years | 0.0 | 0.1 | 0.0 | (0.0, 0.0) | n.s. |
| ≥50 years | 6.0 | 2.5 | 2.4 | (0.9, 5.2) | n.s. |
|
Time from CLL diagnosis | |||||
| 0–2 years | 4.0 | 1.0 | 3.9 | (1.0, 10.0) | <0.05 |
| 3–10 years | 2.0 | 1.4 | 1.4 | (0.1, 5.3) | n.s. |
| ≥11 years | 0.0 | 0.2 | 0.0 | (0.0, 0.0) | n.s. |
CLL=chronic lymphatic leukaemia, SIR=standardised incidence rate, CI=confidence interval, n.s.=not significant.