Table 2.
List of variables in the different versions and types of questionnaire of the Belgian TDI protocol
| Nr | Variable description | Protocol version 2 (2011–2014) | Protocol version 3 (2015-present) |
|---|---|---|---|
| Identification of the centre | |||
| Q1 | Name of the centre | In all versions | In all versions |
| Q2 | Name of the unit/program/satellite | In all versions | In all versions |
| Q3 | Type of unit/program/satellite | In all versions | In all versions |
| Q4 | Type of hospital bed where the patient is hospitalized | / | Version Hospitals |
| Q5 | Arrondissement where the patient is treated | In all versions | In all versions |
| Q6 | Distance between centre and residence place | Version NIHDI | Version NIHDI + Walloon region |
| Identification of the patient | |||
| Q7 | Type of identification | In all versions | In all versions |
| Q8 | Identification number | In all versions | In all versions |
| Description of the client | |||
| Q9 | Sex | In all versions | In all versions |
| Q10 | Age at beginning of the treatment episode | In all versions | In all versions |
| Q11 | Nationality | In all versions | Version NIHDI + Walloon region |
| Q12 | Main type of accommodation during the last 30 days | In all versions | In all versions |
| Q13 | Main type of household during the last 30 days | In all versions | In all versions |
| Q14 | Responsibility of children during the last 30 days | In all versions | In all versions |
| Q15 | Highest educational level achieved | In all versions | In all versions |
| Q16 | Main work situation during the last 30 days | In all versions | In all versions |
| Q17 | Main income situation during the last 30 days | / | In all versions |
| Description of the treatment | |||
| Q18 | Date of the start of treatment | In all versions | In all versions |
| Q19 | Status of previous addiction treatment | In all versions | In all versions |
| Q20 | Source of referral for this treatment episode | In all versions | In all versions |
| Q21 | Lifetime substitution treatment | In all versions | In all versions |
| Q22 | Kind of substitution treatment | In all versions | In all versions |
| Q23 | Age at first substitution treatment | / | In all versions |
| Q24 | Main diagnosis of substance use | Version Hospitals | Version Hospitals |
| Q25 | Treatment objectives | Version Hospitals | Version Hospitals |
| Substance use patterns | |||
| Q26 | Current problematic substances | / | In all versions |
| Q27 | Existence of primary substance | / | In all versions |
| Q28 | Primary substance | In all versions | In all versions |
| Q29 | Other substances used | In all versions | / |
| Q30 | Polydrug use problem | / | In all versions |
| Q31 | Age at first use of primary substance | In all versions | In all versions |
| Q32 | Main route of administration of primary substance | In all versions | In all versions |
| Q33 | Main frequency of use of the primary substance | In all versions | In all versions |
| Q34 | Injecting status | In all versions | In all versions |
| Q35 | Age at first injecting | / | In all versions |
| Q36 | Last injecting occurrence | / | In all versions |
| Q37 | Share of needle status | / | In all versions |
| Q38 | Last share of needle occurrence | / | In all versions |
| Q39 | Share of paraphernalia | / | Version Walloon Region |
| Q40 | Last share of paraphernalia occurrence | / | Version Walloon Region |