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Table 4 Multinomial logistic regression model for redistribution of X59 deaths

From: Injury death certificates without specification of the circumstances leading to the fatal injury – the Norwegian Cause of Death Registry 2005–2014

Complete model Accuracy (mean(SD)) Kappa (mean(SD)) LR stat (mean(SD))* p value
0.712 (0.01) 0.636 (0.01) Ref.  
Reduced models
Without (one at a time)
  Nature of injury 0.494 (0.01) 0.341 (0.01) 10,582 (147) <  0.001
  Place of death 0.673 (0.01) 0.586 (0.01) 1563 (61) <  0.001
  Age 0.690 (0.01) 0.607 (0.01) 1298 (56) <  0.001
  Autopsy 0.706 (0.01) 0.629 (0.01) 366 (26) <  0.001
  Scene of injury 0.704 (0.01) 0.627 (0.01) 309 (27) <  0.001
  Gender 0.712 (0.01) 0.636 (0.01) 199 (22) <  0.001
  Calendar year of death 0.711 (0.01) 0.635 (0.01) 33 (8) <  0.001
  1. Data from the Norwegian Cause of Death Registry, 2005–2014
  2. Based on 1000 repetitions of random division into new training and test sets. The models were developed on the training sets and evaluated on the test sets
  3. *The likelihood ratio statistic (−2 logL) is computed by comparing the full model to the model without the variable in question. The higher the LR statistics, the more the model is weakened by excluding the variable in question