Skip to main content

Table 3 Univariable Cox model for recurrent suspected NAT with escalating severity of injury

From: Predictors of increasing injury severity across suspected recurrent episodes of non-accidental trauma: a retrospective cohort study

Variable HR (95 % CI) P
Male 1.119 0.702 1.784 0.637
Lives in rural areaa 1.513 0.933 2.453 0.093
Age
 0–6 months ref    0.107
 6–12 months 1.707 0.789 3.693  
 12–18 months 2.346 1.098 5.010  
 18–24 months 1.877 0.803 4.386  
 24–30 months 2.277 0.918 5.649  
  > 30 months 0.764 0.254 2.303  
Injury type, N(%)
 Fracture 0.201 0.087 0.466 0.0002
 Dislocation 0.885 0.286 2.743 0.833
 Burn 0.667 0.094 4.739 0.686
 Intracranial 0.169 0.023 1.227 0.079
 Open wound 2.041 1.206 3.452 0.008
 Superficial Injuries 1.945 1.124 3.367 0.017
 Contusions 1.123 0.681 1.850 0.650
Location of injury
 Head/neck 0.347 0.174 0.692 0.003
 Face 1.206 0.525 2.772 0.659
 Chest 0.724 0.423 1.239 0.239
 Abdomen and pelvic contents 0.506 0.120 2.140 0.355
 Extremities or pelvic girdle 0.500 0.287 0.872 0.015
 External 1.336 0.786 2.270 0.284
Number of injuries
 0–1 ref    <.0001
 2–3 0.408 0.242 0.687  
 4+ 0.127 0.045 0.352  
Percent of individuals living below poverty in patient’s zip code > cohort median of 19.75%a 0.612 0.380 0.987 0.044
  1. aBased on the child’s zip code at their first suspected non-accidental trauma (NAT) event and based on 5-year averages from the 2007 to 2011 American Community Survey of the US Census