Serious Injury Outcome Indicators: 2000-17

##Changes since the 2000–16 release: Discovery of an error in data supply Following the discovery of errors in data supply from the Ministry of Health (MoH) and from the Accident Compensation Corporation (ACC), much of the data in the Serious injury outcome indicators: 2017 has been updated and revised. The data used to create the historical series in this release is different to that used in previous releases. Thus, we advise not to make comparisons between this release and previous releases. These changes are outlined below. Changes to data: Due to the discovery of a historical error in previous data supplied from the National Minimum Dataset (NMDS) by Ministry of Health (MoH), all historical data for serious non-fatal injuries has been resupplied for this year. This resupply effects the serious non-fatal indicators and the subsequent total serious (fatal and non-fatal) injury indicators in the following ways: Removal of non-injury events, previously incorrectly included. Updated event records for injury events. Re-matching MoH events to ACC claims for the work-related series resulted in new matches to be identified as work or no longer identified as work. The use of updated MoH data has had more of an impact on the serious non-fatal and the serious (fatal and non-fatal) injury indicators for Māori compared to the total population. The ethnicity variable used in the Serious injury outcome indicators can be updated over time. Additionally, MoH have also recently updated the NMDS to populate ethnicity where it was previously recorded as unknown. This has resulted in many more injuries being identified as incurred by Māori. During the production of Work-related claims: 2017 an error in the data supply from ACC was discovered where non-accepted Accredited Employer claims were incorrectly included in previous releases. This has also impacted the fatal, serious non-fatal and the serious (fatal and non-fatal) work-related injury indicators, as this data is used in their calculation. All work-related serious injuries have been revised in this release. In summary, all data (apart from the non-work-related fatal injury indicators) has been revised in the Serious injury outcome indicators: 2017. Changes to indicators: A new series of provisional suicides for 2000-2017 (fatal self-harm injuries) has been included for the first time. This utilises data from Coronial Services of New Zealand. The existing fatal suicide indicator is subject to a 2-year lag due to the coronial review process. The rates of motor vehicle traffic crash injuries per vehicle km travelled and per registered vehicle have been reinstated for this year’s release. These indicators are only reported up to 2016, due to data availability. Single year indicators have been included for series which have previously been represented as a 3-year moving average. The 3-year moving average has been retained to better reflect trends in series with a small number of injuries. The single year has been added to better represent changes from year to year. These indicators will have both measures displayed. The redevelopment of the Household Labour Force Survey (HLFS) may have resulted in a shift in full-time equivalent employee estimates. The redeveloped HLFS survey was in place for three-quarters of 2016 and for the full year of 2017. This change could have an effect on the release in 2017, as FTEs are used as the denominator in the calculation of age-standardised rates for work-related injuries. The biggest effect of the HLFS redevelopment is that it may be more likely to identify people as being employed. We would expect an increase in detection of FTEs to cause rates to be lower. However, the effect of this has not been formally tested. en-NZ