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Table 4 Statistical analysis

From: Testing the feasibility of a knowledge translation intervention designed to improve chiropractic care for adults with neck pain disorders: study protocol for a pilot cluster-randomized controlled trial

Construct

Measure

Measurement scale

Feasibility of recruitment, retention, and data completion (both chiropractors and patients)

Recruitment and retention rates, missing data

Descriptive statistics: mean and SD for continuous variables and proportions for categorical variables

Chiropractor process outcomes

  

 Adherence rate

Single indicators

Continuous data (number of DCs adhering to the intervention per number of eligible participants)

 

Composite

Count of indicators reaching “success” threshold

 Behavioural

Level of knowledge and self-efficacy

5-point Likert scale (from 1 = strongly agree to 5 = strongly disagree), ordinal

Patient health outcomes

  

 Pain

Visual analogue scale

Self-rated level of pain on 11 points, continuous

 Disability

Neck Disability Index

Scale range and subscales: 10 items in total; each item is scored from 0 to 5 (“0” = no disability and “5” = full disability) for a total of 50

 Satisfaction with care

Questionnaire

Self-rated satisfaction with care measured on the short-form questionnaire rated on a 5-point Likert scale from “very satisfied” to very “dissatisfied”

 Potential efficacy

Post-intervention between groups

Normal approximation to the binomial