
Study groups 
Control group I
n=25 
PIUgroup
n=25 
Alcohol group
n=25 
Control group II
n=25 
Mean/n 
SD/% 
Mean/n 
SD/% 
Mean/n 
SD/% 
Mean/n 
SD/% 
Age (Ttest) 
M=29.5 
SD=9.6 
M=29.4** 
SD=10.8 
M=41.4 
SD=9.0 
M=39.6 
SD=10.3 
Female (Pearson ChiSquare) 
6 
24% 
6 
24% 
8 
32% 
8 
32% 
Male (Pearson ChiSquare) 
19 
76% 
19 
76% 
17 
68% 
17 
68% 
college degree (Pearson ChiSquare) 
10 
40% 
12* 
48% 
5 
20% 
5 
20% 
Occupied (Pearson ChiSquare) 
20* 
80% 
11 
44% 
8*** 
36% 
22 
88% 
Single (Pearson ChiSquare) 
9 
36% 
13 
52% 
13* 
52% 
4 
16% 
without children (Pearson ChiSquare) 
18 
72% 
19* 
76% 
14 
56% 
14 
56% 