Table 2

Draft extraction tool

ItemDefinitions, decision rules, guidance and example data
Reference IDAuthor, date
Instrument nameThe name as described in the article, or as referred to in other articles (eg, ‘Back-EST’ or ‘the Johnson method’)
Instrument descriptionWill collect sub variables, such as:
Equipment required
Duration
Clinicians performing test (eg, physiotherapist, occupational therapist, physician)
Dimensions assessed (eg, range of motion, lifting capacity, etc)
Validity—criterionWill collect subvariables, such as:
Did the article assess this dimension? (yes/no)
What was the inferential test used? (eg, intraclass correlation coefficient, kappa)
What was the result? (eg, kappa score of 0.7)
Validity—contentWill collect sub variables, such as:
Did the article assess this dimension? (yes/no)
How was content validity assessed?
What were the findings?
Validity—constructWill collect subvariables, such as:
Did the article assess this dimension? (yes/no)
How was construct validity assessed?
What were the findings?
Reliability—inter-raterWill collect sub variables, such as:
Did the article assess this dimension? (yes/no)
What was the inferential test used? (eg, intraclass correlation coefficient, kappa)
What was the result? (eg, kappa score of 0.7)
Reliability—intraraterWill collect subvariables, such as:
Did the article assess this dimension? (yes/no)
What was the inferential test used? (eg, intraclass correlation coefficient, kappa)
What was the result? (eg, kappa score of 0.7)
ResponsivenessWill collect sub variables, such as:
Did the article assess this dimension? (yes/no)
How was responsiveness assessed?
What were the findings?
COSMIN Study Quality MetricsWill adhere to the COSMIN tool, do not anticipate altering the definitions
  • These Items may evolve as review progresses and studies are identified. This draft data dictionary describes the selected data extraction variables of the systematic review. The data dictionary would be used to extract data from articles identified as relevant during the screening process. The data extraction database itself would have these items listed in columns with the individual references representing rows such that these data are extracted for every article to form a summary database for later synthesis. Only key variables are presented here. It is anticipated that this list will expand based on the type of data presented in the articles; the definitions guide will also become more specific as a result of independent data extraction and discussion at team meetings.

  • COSMIN, COnsensus-based Standards for the selection of health Measurement INstruments.