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Table 5 Methodological quality assessment

From: The reliability of WorkWell Systems Functional Capacity Evaluation: a systematic review

Authors

Methodological quality by type of reliability

Inter-rater

Intra-rater or test-retest

 
 

Methodological quality

Worst scores

Methodological quality

Worst scores

Smith [19]

Good

4) Assumable that the measurements were independent

Poor

7) Time interval not appropriate

Gardener and McKenna [20]

Good

  

8) Assumable that test conditions were similar

Gross and Battie [23]

Poor

3) Small sample size (< 30)

Poor

3) Small sample size (< 30)

7) Time interval not appropriate

Reneman et al. [24]

Poor

11) Only percentage agreement calculated

Poor

7) Time interval not appropriate;

11) Only percentage agreement calculated

Reneman et al. [25]

  

Poor

7) Time interval not appropriate

Brouwer et al. [12]

  

Poor

6) Patients were not stable

Reneman et al. [26]

  

Poor

3) Small sample size (< 30)

Reneman et al. [28]a

Good

  

3) Good sample size (50–99)c

Reneman et al. [28]b

Good

  

3) Good sample size (50–99)c

Soer et al. [29]

  

Fair

3) Moderate sample size (30–49)

van Ittersum et al. [30]

  

Poor

7) Time interval not appropriate

Trippolini et al. [32]

  

Fair

3) Moderate sample size (30–49)

  1. aHealthy subjects; bPatients with chronic low back pain; cNumber of taped observations were appraised.