Composition of cohort
| Workforce | Activity* | Period in which exposure to ethylene oxide occurred | Period for which cohort was ascertained |
|---|---|---|---|
| *Further details of the processes carried out by the chemical companies (workforces A–D) have been reported previously.7 | |||
| A | Manufacture of ethylene oxide and derivatives | 1950– | 01.01.1956–31.12.1978 |
| B | Manufacture of ethylene oxide and derivatives | 1955– | 01.07.1976–30.04.1985 |
| C | Manufacture of ethylene oxide and derivatives | 1960– | 01.05.1960–30.06.1985 |
| D | Manufacture of derivatives from ethylene oxide produced elsewhere | 1959– | 01.01.1963–31.10.1985 |
| E | Hospital sterilising unit | 1962– | 01.06.1964–10.12.1984 |
| F | Hospital sterilising unit | 1972–84 | 01.07.1972–30.06.1984 |
| G | Hospital sterilising unit | 1965–84 | 01.07.1975–31.12.1984 |
| H | Hospital sterilising unit | 1969– | 01.07.1969–31.08.1985 |
| I | Hospital sterilising unit | 1971– | 01.07.1971–30.09.1985 |
| J | Hospital sterilising unit | 1971– | 01.09.1974–30.09.1985 |
| K | Hospital sterilising unit | 1968–82 | 01.09.1968–31.07.1980 |
| L | Hospital sterilising unit | 1965– | 01.07.1965–30.09.1986 |