N    
Age (years) 20 - 29 7 12.10%  
30 - 39 11 19.00%  
40 - 49 17 29.30%  
50 - 59 16 12.60%  
>= 60 7 12.10%  
Mean (SD)     45.4 (11.7)
Gender Male 54 93.10%  
Female 4 6.90%  
Type of gambling Pachinko 51 87.90%  
Horse race 5 8.60%  
Boat race 1 1.70%  
Foreign exchange 1 1.70%  
Duration of gambling (years) 1-9 9 15.50%  
10-19 10 17.20%  
20 - 29 21 36.20%  
>= 30 18 31.00%  
Mean (SD)     22.6 (10.4)
Repeated gambling after participating in GA (times) none 25 43.10%  
1-2 17 29.30%  
3-5 5 8.60%  
6-9 2 3.40%  
>= 10 9 15.50%  
Debt (ten thousand yen) none 4 6.90%  
1-99 4 6.90%  
100 - 99 24 41.40%  
500 - 999 15 25.90%  
>= 1000 11 19.00%  
Mean (SD)     713.7 (1221.5)
Number of months of participation in GA < 12 16 27.60%  
24-24 11 19.00%  
24 - 60 17 29.30%  
>= 60 14 24.10%  
Mean (SD)     39.4 (36.7)
Table 1: Demographic profile