As described in the first chapter, a patient could be included in the study on the basis of his physical health status, psychiatric functioning, and/or social functioning. From the 174 patients in the injectable heroin trial, 65.5%, 59.8% and 75.3% were included on the basis of their functioning in these problem areas, respectively. Combining these three outcome areas into seven types of inclusion, each patient was admitted to the study according to a specific inclusion profile.

Table 8. Inclusion profile of the participants (n = 174)

As described in the first chapter, a patient could be included in the study on the basis of his physical health status, psychiatric functioning, and/or social functioning. From the 174 patients in the injectable heroin trial, 65.5%, 59.8% and 75.3% were included on the basis of their functioning in these problem areas, respectively. Combining these three outcome areas into seven types of inclusion, each patient was admitted to the study according to a specific inclusion profile.

Table 8. Inclusion profile of the participants (n = 174)

As can be seen in Table 8, the largest subgroup (34.5%) consisted of patients included on all three domains, followed by patients included on the social domain only (22.4%). Patients were rarely admitted to the study on the basis of their health status only (9.2%) or their psychiatric status only (2.3%). In nearly half the cases (47.7%), combined physical health and psychiatric problems were responsible for inclusion.