Swedish nurse anaesthetists | Incidence rates of | |||
---|---|---|---|---|
Age group, years | Number of cases | Person-years | Gothenburg women | Danish women |
References are incidence data for women in the Gothenburg region in 1950–64 and in Denmark 1950–89. The incidence rates are expressed as cases per 105 person-years. For calculations, see Hernberg.4 | ||||
20–29 | 0 | 3170 | 9.9 | 11.35 |
30–39 | 0 | 17860 | 12.26 | 11.77 |
40–49 | 8 | 12260 | 6.33 | 7.62 |
50–59 | 2 | 4440 | 3.57 | 2.50 |
20–59 | 10 | 37730 | SIR = 2.9 (95% CI 1.3 to 5.3) | SIR = 2.8 (95% CI 1.3 to 5.2) |