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Table 3 Results of the Bland & Altman method for validity of the SQUASH

From: Reliability and validity of the short questionnaire to assess health-enhancing physical activity (SQUASH) in patients after total hip arthroplasty

  SQUASH-1 (n = 39) Actigraph™ (n = 39) d SE d 95% CI
Total 1741 ± 1227 661 ± 475 1060 ± 1052 168 720 – 1400
Low intensity 898 ± 797 530 ± 337 237 ± 784 126 -17 – 491
Moderate intensity 475 ± 651 125 ± 161 238 ± 501 80 76 – 400
Vigorous intensity 368 ± 332 4 ± 9 302 ± 317 51 199 – 405
  1. All times are expressed as minutes of activity per week (mean ± SD).
  2. d = mean difference between time spent in physical activity as assessed by the first administered SQUASH (SQUASH-1) and the Actigraph™.
  3. SE d = standard error of the mean difference.
  4. 95% CI = 95% confidence interval of the mean difference between the two measurements.