Health of cohort of heroin addicts from London clinics: 22 year follow up

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Abstract
The original sample in 1969 was a random one in three sample of (prescribed) heroin injectors attending 13 of the 15 London drug clinics. This group was followed up in 1976-7.4 The tracing methods for the 22 year follow up, begun in 1991, have been described.3 The personal interviews were partly structured and covered prescribed and illicit drug use, social and medical aspects, the severity of alcohol dependence questionnaire, and the general health questionnaire. Of the original 128 in the sample, 63 were interviewed in person, providing the current data. Of the remaining 22, 15 were traced but not interviewed (four of them used opiates and 11 did not) and seven (none of them opiate users) were not traced but there was no evidence that they had died. Statistical methods used were Student's t test and Fisher's exact test.

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