Development of the KQoL-26 Questionnaire for Knee Quality of Life
Author Information
Author(s): Garratt Andrew M, Brealey Stephen, Robling Michael, Atwell Chris, Russell Ian, Gillespie William, King David
Primary Institution: National Resource Centre for Rehabilitation in Rheumatology, Oslo, Norway
Hypothesis
The KQoL-26 questionnaire will effectively assess the impact of knee problems on patients' quality of life.
Conclusion
The KQoL-26 has good evidence for reliability, validity, and responsiveness, making it suitable for use in trials involving patients with knee injuries.
Supporting Evidence
- The KQoL-26 showed high internal consistency with Cronbach's alpha ranging from 0.91 to 0.94.
- Principal component analysis identified three scales: physical functioning, activity limitations, and emotional functioning.
- The KQoL-26 demonstrated significant responsiveness with effect sizes ranging from 0.86 to 1.13.
Takeaway
The KQoL-26 is a new questionnaire that helps understand how knee problems affect people's lives, and it works well.
Methodology
The questionnaire was developed through patient interviews and focus groups, followed by statistical analysis for reliability and validity.
Potential Biases
Potential bias may arise from the self-reported nature of the questionnaire and the specific patient population sampled.
Limitations
The response rate for the postal survey was lower than expected, which may affect the generalizability of the findings.
Participant Demographics
Mean age of trial patients was 39.67 years, with 36.6% females; survey patients had a mean age of 47.02 years, with 43.5% females.
Statistical Information
Statistical Significance
p<0.01
Digital Object Identifier (DOI)
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