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Table 2 Hypotheses

From: Evaluating a collaborative smoking cessation intervention in primary care (ENTER): study protocol for a cluster-randomized controlled trial

Hypotheses

Comparison

Statistical method

Outcome measure

Primary hypothesis

 Smoke reduction

CG-IG

Mixed models

Quantity-frequency index

Secondary hypotheses

 Rate of abstinence

CG-IG

Chi-square

Abstinence

 Health-related quality of life

CG-IG

Mixed models

SF-12

 Respiratory complaints

CG-IG

Mixed models

Visual Simplified Respiratory Questionnaire

Process evaluation hypotheses

 Referral

CG-IG

Descriptive

Amount of patients referred to the smoking cessation program via referral form

 Uptake

CG-IG

Descriptive

Amount of patients attending the smoking cessation program

 Cost-effectiveness and cost-utility

CG-IG

ICER

Quantity-frequency index, QALY