Reply to the Letter to the Editor of S. Shahsavari et al. concerning “Predicting medical complications in spine surgery: evaluation of a novel online risk calculator” by M. F. Kasparek et al. (Eur Spine J: doi: 10.1007/s00586-018-5707-9)
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Conflict of interest
We certify that we have not signed any agreement with commercial interest related to this study, which would in any way limit publication of any and all data generated for the study or to delay publication for any reason.
- 3.http://www.statisticssolutionscom/chi-square-goodness-of-fit-test/. Last Accessed 29 August 2018
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