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Table 1 Outcome measures: Constructs, measures and measurement scales

From: Guideline implementation in the Canadian chiropractic setting: a pilot cluster randomized controlled trial and parallel study

Construct

Measure

Measurement Scale

Chiropractor outcomes

 Adherence

Single indicators

Ordinal

 

Composite

Count of indicators reaching “success” threshold

Patient Outcomes

 Pain

Visual analogue scale

11-points, continuous

 Disability

Neck disability index

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