Assessing Physical Activity in Hip Replacement Patients
Author Information
Author(s): Wagenmakers Robert, Akker-Scheek Inge van den, Groothoff Johan W, Zijlstra Wiebren, Bulstra Sjoerd K, Kootstra Johan WJ, Wendel-Vos GC Wanda, van Raaij Jos JAM, Stevens Martin
Primary Institution: University Medical Center Groningen
Hypothesis
The SQUASH questionnaire is a reliable and valid tool for assessing physical activity in patients after total hip arthroplasty.
Conclusion
The SQUASH is a fairly reliable tool for assessing physical activity in patients after THA, but further analysis is needed due to systematic bias found in the results.
Supporting Evidence
- The SQUASH showed a Spearman correlation coefficient of 0.57 for overall reliability.
- The SQUASH's validity was comparable to other questionnaires validated with accelerometers.
- Patients reported spending 46% of their activity time on leisure activities.
Takeaway
The SQUASH questionnaire helps doctors understand how active patients are after hip surgery, but it might not always give the right answers.
Methodology
44 patients completed the SQUASH questionnaire twice, and 39 wore an accelerometer for validation.
Potential Biases
Self-reported physical activity may be biased as patients could overestimate their activity levels.
Limitations
There was considerable systematic bias between the SQUASH and Actigraph™ readings.
Participant Demographics
Mean age 71 years, 61.4% female.
Statistical Information
P-Value
0.01
Confidence Interval
95% CI not specified
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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