RT Journal Article
SR Electronic
T1 Empirical validation of the New Zealand serious non-fatal injury outcome indicator for ‘all injury’
JF Injury Prevention
JO Inj Prev
FD BMJ Publishing Group Ltd
SP 300
OP 304
DO 10.1136/injuryprev-2017-042463
VO 24
IS 4
A1 Colin Cryer
A1 Gabrielle S Davie
A1 Pauline J Gulliver
A1 Eleni Th Petridou
A1 Nick Dessypris
A1 Jens Lauritsen
A1 Alison K Macpherson
A1 Ted R Miller
A1 Brandon de Graaf
YR 2018
UL http://injuryprevention.bmj.com/content/24/4/300.abstract
AB Our purpose was to empirically validate the official New Zealand (NZ) serious non-fatal ’all injury' indicator. To that end, we aimed to investigate the assumption that cases selected by the indicator have a high probability of admission. Using NZ hospital in-patient records, we identified serious injury diagnoses, captured by the indicator, if their diagnosis-specific survival probability was ≤0.941 based on at least 100 admissions. Corresponding diagnosis-specific admission probabilities from regions in Canada, Denmark and Greece were estimated. Aggregate admission probabilities across those injury diagnoses were calculated and inference made to New Zealand. The admission probabilities were 0.82, 0.89 and 0.90 for the regions of Canada, Denmark and Greece, respectively. This work provides evidence that the threshold set for the official New Zealand serious non-fatal injury indicator for ’all injury' captures injuries with high aggregate admission probability. If so, it is valid for monitoring the incidence of serious injuries.