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Response to the Letter to the Editor regarding the article entitled ‘Early shunt surgery improves survival in idiopathic normal pressure hydrocephalus’

Dr Onder has addressed important issues regarding other potential sources of bias between the groups in our study. We are aware that we were not able to adjust for other comorbidities than those that were reported, nor for the patients' socioeconomic status. The readers of the article must bear in mind that none of the circumstances behind the article were designed or chosen by the authors, but instead the result of an imperfect healthcare system, where all included personnel were dedicated to provide as good care for the patients as possible.