Said Sadiqi, Marcel W. Post, Allard J. Hosman, Marcel F. Dvorak, Jens R. Chapman, Lorin M. Benneker, Frank Kandziora, S. Rajasekaran, Klaus J. Schnake, Alexander R. Vaccaro, F. Cumhur Oner


August 2020, pp 1 - 14 Original Article Read Full Article 10.1007/s00586-020-06554-w

First Online: 19 August 2020

Purpose

To validate the Dutch version of AOSpine PROST (Patient Reported Outcome Spine Trauma).

Methods

Patients were recruited from two level-1 trauma centers from the Netherlands. Next to the AOSpine PROST, patients also filled out SF-36 for concurrent validity. Descriptive statistics were used to analyze the characteristics. Content validity was assessed by evaluating the number of inapplicable or missing questions. Also floor and ceiling effects were analyzed. Internal consistency was assessed by calculating Cronbach’s α and item-total correlation coefficients (itcc). Spearman correlation tests were performed within AOSpine PROST items and in correlation with SF-36. Test–retest reliability was analyzed using Intraclass Correlation Coefficients (ICC). Responsiveness was assessed by calculating effect sizes (ES) and standardized response mean (SRM). Factor analysis was performed to explore any dimensions within AOSpine PROST.

Results

Out of 179 enrolled patients, 163 (91.1%) were included. Good results were obtained for content validity. No floor or ceiling effects were seen. Internal consistency was excellent (Cronbach’s α = 0.96, itcc 0.50–0.86), with also good Spearman correlations (0.25–0.79). Compared to SF-36, the strongest correlation was seen for physical functioning (0.79; p  1), explaining 65.4% of variance.

Conclusions

Very satisfactory results were obtained for reliability, validity and responsiveness of the Dutch version of AOSpine PROST. Treating surgeons are encouraged to use this novel and validated tool in clinical setting and research to contribute to evidence-based and patient-centered care.


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