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Responsiveness and Minimal Clinically Important Differences after Cholecystectomy: GIQLI Versus SF-36

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Journal of Gastrointestinal Surgery Aims and scope

Abstract

Introduction

To compare responsiveness and minimal clinically important differences (MCID) between the Gastrointestinal Quality of Life (GIQLI) and the Short Form 36 (SF-36), we prospectively analyze 159 patients undergoing cholecystectomy at two tertiary academic hospitals.

Patients and Methods

All patients completed the disease-specific GIQLI and the generic SF-36 before and 3 months after surgery. Scores using these instruments were interpreted by generalized estimating equation before and after cholecystectomy. The bootstrap estimation was used to derive 95% confidence intervals for differences in the responsiveness estimates.

Results and Discussion

Mean changes in all GIQLI and the SF-36 subscales were statistically significant (p < 0.05). Comparisons of effect size (ES), standardized response means (SRM), and relative efficiency (>1) indicated that the responsiveness of the GIQLI was superior to that of the SF-36. In the equivalence test, all lower or upper confidence limits presented no equivalence (>5), indicating good MCID. The ES and SRM for emotions and physical function in the GIQLI significantly differed from those of the SF-36 (p < 0.05).

Conclusion

The data in this study indicate that clinicians and health researchers should weight disease-specific measures more heavily than generic measures when evaluating treatment outcomes.

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Correspondence to King-Teh Lee.

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Shi, HY., Lee, HH., Chiu, CC. et al. Responsiveness and Minimal Clinically Important Differences after Cholecystectomy: GIQLI Versus SF-36. J Gastrointest Surg 12, 1275–1282 (2008). https://doi.org/10.1007/s11605-008-0526-7

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