Table 1.

Means and Standard Deviations of Outcome Measures at Baseline and 6 Month Follow-up.

	Baseline			6 Month Follow-up
Outcome measures (SD)	PFI	CBI	AOC	PFI	CBI	AOC
Gambling Frequency	3.86 (1.98)	3.51 (1.83)	3.71 (2.06)	3.38 (2.16)	3.29 (1.63)	3.93 (2.17)
Gambling Expenditure	0.20 (1.04)	−0.15 (0.57)	−0.08 (0.73)	0.09 (1.05)	−0.19 (0.65)	0.05 (0.73)
Gambling Problems	5.71 (7.35)	3.64 (4.20)	5.55 (8.31)	2.58 (5.95)	2.00 (3.03)	5.40 (6.92)
DSM-IV Criteria	2.52 (1.75)	1.93 (1.19)	2.24 (1.90)	1.73 (1.04)	1.53 (1.14)	2.26 (1.50)
Perceived Norms (Frequency)	3.65 (1.29)	3.89 (1.31)	3.50 (1.53)	2.90 (1.34)	4.17 (1.29)	3.50 (1.52)
Illusions of Control	13.67 (3.92)	13.34 (3.86)	13.20 (3.96)	12.60 (3.69)	11.87 (3.89)	13.20 (4.03)

Note. PFI = Personalize Feedback Intervention; CBI = Cognitive Behavioral Intervention; AOC = Assessment-Only Control. Gambling frequency, gambling expenditure, and perceived norms were measured by the GQPN; gambling problems were measured by the GPI; DSM-IV criteria were measured by the NODS; illusions of control were measured by the BACS. No group differences between intervention conditions were evident at baseline for any outcome.