Standardized incidence ratios for cancer in patients with herpes zoster, by age, sex and duration of follow-up
| Characteristic | No. of cancers observed | No. of cancers expected | Standardized incidence ratio (95% CI) |
|---|---|---|---|
| All patients | 895 | 905.38 | 0.99 (0.93–1.06) |
| Male | 513 | 498.19 | 1.03 (0.94–1.12) |
| Female | 382 | 407.19 | 0.94 (0.85–1.04) |
| Age, yr | |||
| 20–39 | 27 | 26.77 | 1.01 (0.66–1.47) |
| 40–59 | 245 | 238.93 | 1.03 (0.90–1.16) |
| 60–79 | 491 | 502.86 | 0.98 (0.89–1.07) |
| ≥ 80 | 132 | 136.81 | 0.96 (0.81–1.14) |
| Follow-up, yr | |||
| ≤ 1 | 181 | 199.33 | 0.91 (0.78–1.05) |
| 1–5 | 537 | 541.47 | 0.99 (0.91–1.08) |
| > 5 | 177 | 164.58 | 1.08 (0.92–1.25) |
Note: CI = confidence interval.