The shortcoming and deficiency in "Risk factors for complications and in-hospital mortality following hip fractures: a study using the National Trauma Data Bank".

Abstract

Secondly, the averaged age of patients in this study was 72.7 years old, which means that most of these are elderly patients. Such elderly patients is generally prevalent of cognitive impairment [4, 5]. As we know, the cognitive impairment was the significant risk factors for mortality in recently years [6]. In this study, it was lack of this important indicator, which was a serious flaw. Thirdly, the hip fractures in the elderly patients usually belonged to low energy injury, which appeared in this article as 43,474 blunt injury, left 890 “other” mechanism of injury. however, when mentioned to the injury severity score (ISS), there were 1,909 patients belonged to serious injury, with ISS scores between 25 and 75. Did the 890 patients of “other” injury mechanism were high energy injury? As we usually divided the mechanism of injury in hip fracture into high energy and low energy injury (blunt injury), so if we attribute the 890 patients to high energy injury with high ISS score (25–75), why there were 1,909 patients with ISS score (25–75). We are waiting for the author’s interpretation of confusion.