From: Leukaemia incidence among workers in the shoe and boot manufacturing industry: a case-control study
Age Group | Number of cases | SIR | 95% C. I.a | ||
---|---|---|---|---|---|
Observed | Expectedb | Lower CI | Upper CI | ||
0–44 | 6 | 7.5 | 0.80 | 0.29 | 1.75 |
45–64 | 7 | 10.0 | 0.70 | 0.28 | 1.44 |
65–74 | 21 | 10.1 | 2.09 | 1.29 | 3.19 |
75+ | 20 | 12.7 | 1.57 | 0.96 | 2.42 |
Total | 54 | 40.4 | 1.34 | 1.01 | 1.75 |