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Table 3 Perceived changes in frequencies of substance use at 6 months of follow-up (from baseline)

From: Improved drug-use patterns at 6 months post-discharge from inpatient substance use disorder treatment: results from compulsorily and voluntarily admitted patients

   Mean score baselinea Mean score follow-upa Deterio-ration No change Improved P valueb
Frequency of preferred substancec (n = 120) VA (71) 2.7 1.5 4 (5 %) 24 (34 %) 43 (61 %) <0.001
CA (49) 2.8 2.2 2 (4 %) 29 (59 %) 18 (37 %) <0.001
Cannabisd (n = 49) VA (28) 2.7 1.5 3 (11 %) 8 (28 %) 17 (61 %) <0.001
CA (21) 2.6 1.5 2 (9 %) 6 (28 %) 13 (62 %) 0.006
Amphetamined (n = 43) VA (24) 2.8 1.2 0 (0 %) 6 (25 %) 18 (75 %) <0.001
CA (19) 2.5 1.7 2 (10 %) 7 (37 %) 10 (53 %) 0.026
  1. aThe ordinal ASI scale (frequency of use in the last 6 months) was defined as follows: 0 = never used; 1 = sometimes, but less than 2–3 times a month; 2 = 1–3 days a week; 3 = everyday use)
  2. b P value from Wilcoxon signed-rank test
  3. cPreferred substance according to the ASI interview
  4. dSub-analyses of specific preferred drug if more than 40 patients reported preference for this substance