Vorvida: study protocol of a randomized controlled trial testing the effectiveness of Internet-based self-help program for the reduction of alcohol consumption for adults

Table 2 Measures and measurement points

	AUDIT-C	QFI¹	TFB²	Being Drunk³	Binge Drinking³	CAEQ⁴	AASE-G⁵	RCQ-G⁶	Readiness-Ruler⁷	ZUF-8^8,9
Screening	X	X
t0 baseline		X	X	X	X	X	X	X	X
t1 three month follow-up		X	X	X	X	X	X	X	X	X
t2 six month follow-up		X	X	X	X	X	X	X	X	X

¹Quantity- Frequency-Index (amount of alcohol in g) last 30 days, ²Timeline-Follow-Back (amount of alcohol in g) last 7 days, ³Single item, ⁴ The Comprehensive Alcohol Expectancy Questionnaire, ⁵Alcohol Abstinence Self-efficacy Questionnaire, ⁶Readiness to change Questionnaire, Readiness-Ruler, ⁸Patient satisfaction questionnaire, ⁹Intervention group only

ISSN: 1471-244X