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Table 4 Multivariable 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

Entire Cohort
Variable HR (95 % CI) P
 Lives in rural areaa 1.69 1.02 2.78 0.04
 Open wound injury 2.12 1.24 3.62 0.01
 Superficial injury 2.28 1.31 3.98 0.004
 Number of injuries
 0–1 ref    <.0001
 2–3 0.40 0.24 0.67  
 4+ 0.11 0.04 0.31  
Continuously enrolled children only
 Lives in rural areaa 2.01 1.03 3.91 0.04
 Fracture 0.23 0.07 0.76 0.02
 Open wound injury 2.30 1.14 4.66 0.02
  1. aLiving in a rural area was based on the child’s zip code at their first event. All other predictor variables in these models were the values of the independent variables at the previous event