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The Abdominal Hernia-Q: Development, Psychometric Evaluation, and Prospective Testing.

OBJECTIVE
Our study completes the development and estimates the psychometric properties of a novel, ventral hernia-specific patient reported outcomes (PRO) tool-the Abdominal Hernia-Q (AHQ).


SUMMARY BACKGROUND DATA
A standardized method for measuring hernia-related PRO has not been identified. There remains a need for a broadly applicable, hernia-specific tool that incorporates patient viewpoints and offers pre- and postoperative forms.


METHODS
Concept elicitation interviews, focus groups, and cognitive debriefing interviews were completed to define content. The preoperative AHQ was administered to patients scheduled to have a ventral hernia repair (VHR). The postoperative AHQ was administered to patients within 24 months post-VHR. The SF-12 and HerQLes were concurrently administered. Psychometric evaluation was performed. Subsequently, the AHQ (pre: 8 items; post: 16 items) underwent prospective testing.


RESULTS
Cross-sectional evaluations of patient responses to the AHQ (pre n = 104; post n = 261) demonstrated high internal consistency (Cronbach α pre = 0.86; post = 0.90) and moderate disattenuated correlations with the HerQLes (pre r = -0.71 and post r = -0.70) and the SF-12 domains (pre and post r ≥ 0.5 for 7 of 8 domains). Principal components analyses produced 2 factors preoperatively and 3 factors postoperatively. In prospective testing (n = 67), the AHQ scores replicated the cross-sectional psychometric results and suggested sensitivity to clinical outcomes.


CONCLUSIONS
Through patient involvement and rigorous, iterative psychometric evaluation, we have produced substantial data to suggest the validity and reliability of AHQ scores in measuring hernia-specific PRO. The AHQ advances the clinical management and treatment of patients with abdominal hernias by providing a more complete understanding of patient-defined outcomes.This is an open access article distributed under the terms of the Creative Commons Attribution-Non Commercial-No Derivatives License 4.0 (CCBY-NC-ND), where it is permissible to download and share the work provided it is properly cited. The work cannot be changed in any way or used commercially without permission from the journal. http://creativecommons.org/licenses/by-nc-nd/4.0.