Table 3.
SIRs for childhood leukemia (< 15 years of age) and observed numbers of cases in two categories of calendar time (1990–1998 and 1999–2005) and three categories of attained age (0–4, 5–9, and 10–14 years).
| 1990–1998
|
1999–2005
|
Total (1990–2005)
|
||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age (years) | Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI | Obs | Exp | SIR | 95% CI |
| 0–4 | 6 | 1.11 | 5.39 | 1.98–11.72 | 4 | 0.92 | 4.33 | 1.18–11.09 | 10 | 2.04 | 4.91 | 2.35–9.03 |
| 5–9 | 2 | 0.63 | 3.20 | 0.39–11.55 | 0 | 0.55 | — | — | 2 | 1.17 | 1.71 | 0.21–6.16 |
| 10–14 | 1 | 0.38 | 2.61 | 0.07–14.56 | 1 | 0.41 | 2.43 | 0.06–13.53 | 2 | 0.79 | 2.52 | 0.30–9.09 |
| Total | 9 | 2.12 | 4.24 | 1.94–8.05 | 5 | 1.88 | 2.66 | 0.86–6.20 | 14 | 4.00 | 3.50 | 1.91–5.87 |
Abbreviations: Exp, expected number of cases, derived using German national annual age-specific leukemia incidence rates; Obs, observed number of leukemia cases.