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

Table 7.

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 [0.83 to 1.84] 5.80 < 0.001 1.45 [0.96 to 1.94] 6.54 < 0.001
Problem gambling (PGSI) 2.47 [1.87 to 3.07] 10.73 < 0.001 1.75 [1.23 to 2.26] 7.88 < 0.001
Highest stake (Euro)a 1.20 [0.70 to 1.69] 5.20 < 0.001 0.51 [0.07 to 0.96] 2.32 0.011
Well-being (WHO-5) 1.72 [1.19 to 2.25] 7.48 < 0.001 1.05 [0.58 to 1.52] 4.73 < 0.001

Positive effect sizes refer to beneficial outcomes

aDuring the past 30 days