“Influence of possible predictor variables on the outcome of primary oral squamous cell carcinoma: a retrospective study of 392 consecutive cases at a single centre”— methodological issues

We read the paper by Loeffelbein and colleagues, published online in the International Journal of Oral and Maxillofacial Surgery in December 2016, with enthusiasm1. The authors aimed to examine tumour-specific and patient-related risk factors in a large single-centre cohort, i.e., factors that have a considerable effect on postoperative survival following ablative tumour surgery with elective neck dissection and immediate microvascular reconstruction in oral squamous cell carcinoma. It was concluded that postoperative survival does not depend only on tumour-related characteristics.

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