Table 2. Incidence rate ratio (IRR) for Kaposi's sarcoma and corresponding 95% confidence interval (CI) after renal transplantation according to selected characteristics (Italy, 1970–2003).
|
Study population
|
Kaposi's sarcoma
|
||||
|---|---|---|---|---|---|
| Characteristic | No. | (%) | No. | IRRb | 95% CI |
| Sex | |||||
| Women | 640 | (34.7) | 5 | 1 | — |
| Men | 1204 | (65.3) | 18 | 2.4 | 0.8–7.0 |
| Age at transplantation | |||||
| ⩽39 | 854 | (46.3) | 9 | 1 | — |
| 40–49 | 518 | (28.1) | 7 | 1.9 | 0.7–5.2 |
| ⩾50 | 472 | (25.6) | 7 | 3.0 | 1.1–8.5 |
| Area of birth a | |||||
| North | 697 | (39.3) | 3 | 1 | — |
| Centre | 382 | (21.5) | 4 | 2.7 | 0.6–12.3 |
| South | 696 | (39.2) | 15 | 5.7 | 1.6–19.7 |
| Area of residence a | |||||
| North | 1078 | (58.6) | 10 | 1 | — |
| Centre | 400 | (21.7) | 5 | 1.5 | 0.3–7.0 |
| South | 362 | (19.7) | 8 | 1.2 | 0.4–3.6 |
| Time since transplantation (years) | |||||
| ⩾04 | 1310 | (71.1) | 8 | 1 | — |
| 1–3 | 371 | (20.1) | 7 | 1.6 | 0.6–4.7 |
| <1 | 163 | (8.8) | 8 | 4.5 | 1.6–12.2 |
| Calendar period at transplantation | |||||
| 1970–1982 | 234 | (12.7) | 0 | 0 | — |
| 1983–1996 | 988 | (53.6) | 20 | 1 | — |
| 1997–2003 | 622 | (33.7) | 3 | 0.4 | 0.1–1.5 |
| Centre | |||||
| Milan | 1340 | (72.7) | 13 | 1 | — |
| Rome | 504 | (27.3) | 10 | 1.7 | 0.7–4.2 |
| Donor status | |||||
| Cadaver | 1625 | (88.1) | 20 | 1 | — |
| Living | 219 | (11.9) | 3 | 0.7 | 0.2–3.2 |
a
The sum does not add up to the total because of missing values.
b
IRR adjusted for sex, age at transplantation, area of birth, and time since transplantation.