Table 4 Motives for non-prescribed use in different cities
|  | Malmö | Göteborg | Lund | Jönköping/Norrköping | All cities | Chi-2 (P value) |
|---|---|---|---|---|---|---|
Motives for use of methadone | (182) | (96) | (48) | (35) | (361) | Â |
 Avoid withdrawal symptoms | 92.9 | 89.6 | 79.2 | 85.7 | 89.5 | 0.043 |
 Lack of heroin | 57.1 | 54.2 | 43.8 | 51.4 | 54.0 | 0.416 |
 Own detoxification | 64.3 | 40.6 | 43.8 | 45.7 | 53.5 | 0.001 |
 Wanted to stay clean from heroin | 56.6 | 50.0 | 58.3 | 28.6 | 52.4 | 0.017 |
 Own substitution treatment | 42.3 | 21.9 | 54.2 | 34.3 | 37.7 | 0.001 |
 Get high | 24.7 | 32.3 | 18.8 | 60.0 | 29.4 | 0.000 |
Motives for use of buprenorphine | (148) | (104) | (41) | (37) | (330) | Â |
 Avoid withdrawal | 83.8 | 83.7 | 85.4 | 89.2 | 84.5 | 0.859 |
 Lack of heroin | 44.9 | 45.2 | 36.6 | 48.6 | 44.4 | 0.723 |
 Own detoxification | 53.4 | 45.2 | 61.0 | 54.1 | 51.8 | 0.331 |
 Wanted to stay clean from heroin | 43.9 | 52.9 | 61.0 | 54.1 | 50.0 | 0.191 |
 Own substitution treatment | 25.7 | 44.2 | 61.0 | 75.7 | 41.5 | 0.000 |
 Get high | 35.1 | 26.0 | 17.1 | 45.9 | 31.2 | 0.019 |
Motives for use of buprenorphine/naloxone | (100) | (57) | (25) | (26) | (208) | Â |
 Avoid withdrawal | 77.0 | 82.5 | 76.0 | 69.2 | 77.4 | 0.601 |
 Lack of heroin | 39.0 | 45.6 | 36.0 | 26.9 | 38.9 | 0.434 |
 Own detoxification | 49.0 | 41.1 | 40.0 | 34.6 | 44.0 | 0.512 |
 Wanted to stay clean from heroin | 40.0 | 38.6 | 48.0 | 34.6 | 39.9 | 0.795 |
 Own substitution treatment | 25.0 | 31.6 | 40.0 | 50.0 | 31.7 | 0.076 |
 Get high | 17.0 | 14.0 | 20.0 | 26.9 | 17.8 | 0.540 |