Subsequent Injury Study (SInS)

Subsequent Injury Study (SInS): Improving outcomes for injured New Zealanders

Project Team: Sarah Derrett, Helen Harcombe, Emma WyethGabrielle Davie.

Associate Investigators: Ari SamaranayakaSue Wilson, Trudy Sullivan.

Funding: Health Research Council of New Zealand (2015-2018).

Subsequent injury (SI; sometimes referred to re-injury or being ‘accident prone’) is a major contributor to the global injury disability burden. Last year, New Zealand’s injury insurer (ACC) spent $2.9 billion and received 1.8 million injury claims. Our prior analyses indicate 28 per cent of these may be SI. The Subsequent Injury Study (SInS) aims to contribute to improved outcomes for individuals and populations by identifying: modifiable risk factors predicting ACC-reported SI (ACC-SI); participation, health and disability outcomes; and costs following ACC-SI, as necessary first steps towards developing interventions for injured populations. SInS will leverage the wealth of information already-collected from our earlier Prospective Outcomes of Injury Study (POIS; n=2856 including 566 Māori) through linkage with 1) ACC data about ACC-SI for two years following an initial injury, and 2) the National Minimum Dataset of hospital discharges for SI – providing a unique opportunity to address a clear gap in knowledge.


Harcombe, H., Davie, G., Wyeth, E., Ameratunga, S., Powell, D., & Derrett, S. (2020). Predictors of severe or multiple subsequent injuries over 24 months among an already-injured cohort in New Zealand. Injury. Advance online publication. doi: 10.1016/j.injury.2019.12.038

Wyeth, E., Lambert, M., Samaranayaka, A., Harcombe, H., Davie, G., & Derrett, S. (2019). Subsequent injuries experienced by Māori: Results from a 24-month prospective study in New Zealand. New Zealand Medical Journal, 132(1499), 23-35. Retrieved from

Harcombe, H., Aldabe, D., Davie, G., Wyeth, E. and Derrett, S. (2018) Concordance between sentinel and subsequent injuries: a prospective study of injured New Zealanders. Injury, DOI:

Wilson SJ, Davie G, Harcombe H, Wyeth EH, Cameron ID, Derrett S. (2018). Impact of further injury on participation in work and activities among those previously injured: Results from a New Zealand prospective cohort study. Qual Life Res.

Harcombe H, Davie G, Wyeth E, Samaranayaka A, Derrett S. (2017) Injury upon injury: A prospective cohort study examining subsequent injury claims in the twenty-four months following a substantial injury. Injury Prevention. IP Online First, published on October 6, 2017

Derrett S, Harcombe H, Wyeth E, Davie G, Samaranayaka A, Hansen P, Hall G, Cameron ID, Gabbe B, Powell D, Sullivan T, Wilson S, Barson D (2016) Subsequent Injury Study (SInS): Improving outcomes for injured New Zealanders. Injury Prevention, On-line first, doi:10.1136/injuryprev-2016-042193

Harcombe H, Derrett S, Samaranayaka A, Davie G,
Wyeth E, & Wilson S (2014) Factors predictive of subsequent injury in a longitudinal cohort study. Injury Prevention. doi:10.1136/injuryprev-2014-041183

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