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. 2019 Sep 27;36(4):1341–1358. doi: 10.1007/s10899-019-09883-8

Table 4.

Within-group effects in CO and EC

CO EC
d [95%-CI] t (106) p value d [95%-CI] t (110) p value
Gambling daysa 1.34 [0.92 to 1.76] 6.96 < 0.001 1.44 [1.02 to 1.86] 7.64 < 0.001
Problem gambling (PGSI) 2.48 [1.97 to 2.98] 12.86 < 0.001 1.72 [1.28 to 2.15] 9.08 < 0.001
Highest stake (Euro)a 1.12 [0.71 to 1.53] 5.84 < 0.001 0.52 [0.14 to 0.90] 2.77 0.003
Well-being (WHO-5) 1.73 [1.28 to 2.17] 8.96 < 0.001 1.04 [0.64 to 1.44] 5.51 < 0.001

Positive effect sizes refer to beneficial outcomes

aDuring the past 30 days