n % M (SD)
Age 294   45.6 (8.9)
Gender 299    
Female   35.50%  
Marital status 286    
Not cohabiting   25.2%  
Education 229    
high/higher intermediate   43.7%  
lower intermediate   24%  
basic or none   32.3%  
Employment 291    
employed   74.2%  
unemployed   14.1%  
retired or other   11.7%  
Primary drinking pattern 274    
regular drinking   83.9%  
episodic heavy drinking   16.1%  
Alcohol consumption risk group (regular drinkers) 224    
low risk   14.3%  
high risk   85.7%  
Problematic drinking in years 287   10.5 (7.6)
DSM IV Alcohol dependence symptoms 243   6.6 (2.0)
DSM IV Alcohol dependence diagnosis 246    
yes   95.9%  
no   4.1%  
OCDS (Obsessive Compulsive Drinking Scale) 270   17.5 (5.7)
BDI (Beck Depression Inventory) 244   7.9 (5.7)
Psychiatric and/or medical disorders 248   5.9 (3.1)
yes   52.4%  
no   47.6%  
Note: due to missing data n varies between 224-299
M=mean; SD=standard deviation; DSM IV=The Diagnostic and Statistical Manual-IV
Low risk=24 ≤ standard drinks for men and ≤ 18 standard drinks for women
High risk=24 ≥ standard drinks for men and ≥ 18 standard drinks for women
Table 1: Baseline characteristics of patients (n= 299) attending an outpatient treatment for problem drinking