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Table 3 Risk ratio and risk difference of transition to lower AUDIT category and change in AUDIT mean scores from baseline to 6 month follow-up, Intention to treat analysis (ITT)

From: A pragmatic randomised trial of two counselling models at the Swedish national alcohol helpline

   AUDIT risk level at follow-up % Change in AUDIT risk level
n l II III IV % Risk ratio (95% CI) Risk difference (95% CI)
Brief structured intervention 107 29.9 40.2 13.1 16.8 68.2 1.12 (0.93 to 1.37) 0.08 (−0.05 to 0.20)
Usual care 117 25.6 40.2 14.5 19.7 60.7 Reference  
  n Baseline mean (sd) Follow-up mean (sd)   Mean difference (95%CI) Mean difference between groups (95% CI)
AUDIT score
Brief, structured intervention 107 19.7 (5.8) 11.7 (6.9)   −7.9 (−9.3 to −6.4) 0.87 (−1.0 to 2.8)
Usual care 117 19.1 (5.7) 12.1 (7.3)   −7.1 (−8.4 to −5.7)  
AUDIT C score
Brief, structured intervention 107 7.8 (2.2) 5.0 (2.8)   −2.8 (−3.3 to −2.3) 0.20 (−0.53 to 0.92)
Usual care 117 7.6 (2.0) 5.0 (2.8)   −2.6 (−3.1 to −2.1)  
  1. AUDIT risk levels: I ‘low risk’ II ‘hazardous III ‘harmful IV ‘probable dependence’