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Table 3 Factorial trial design and target sample per group

From: Optimizing internet-delivered cognitive behaviour therapy for alcohol misuse: a study protocol for a randomized factorial trial examining the effects of a pre-treatment assessment interview and health educator guidance

 

Factor 1: Pre-treatment assessment interview

Total

Yes

No

Factor 2: Health educator guidance

Yes

75

75

150

No

75

75

150

Total

150

150

300