THE NEW ZEALAND
MEDICAL JOURNAL
NZMJ 2 August 2013, Vol 126 No 1379; ISSN 1175 8716 Page 1 of 11
URL: http://journal.nzma.org.nz/journal/126-1379/5760/ ©NZMA
Injury severity and 3-month outcomes among Mori: results
from a New Zealand prospective cohort study
Brett Maclennan, Emma Wyeth, Brendan Hokowhitu, Suzanne Wilson, Sarah Derrett
Abstract
Aims To examine the prevalence of health and social outcomes pre- and 3 months
post-injury, and the association between New Injury Severity Scores (NISS) and 3-
month outcomes, for the Mori cohort of the Prospective Outcomes of Injury Study.
Methods New Zealand residents were recruited from the Accident Compensation
Corporation’s entitlement claims register and participants interviewed at 3 months
post-injury. Those who reported Mori ethnicity (n=566) were included in the Mori
cohort.
Results States indicative of favourable health were less prevalent among the cohort
post-injury than pre-injury for all measures examined. Approximately half the cohort
were experiencing difficulties walking 3 months after their injury, over two-thirds a
level of pain or discomfort, and more than half a level of psychological distress. The
prevalence of disability was 49%. The prevalence of some adverse outcomes
increased with increasing NISS but a high level of problems were still experienced by
those classified as having a ‘minor’ injury. Nonetheless, a majority of the cohort were
satisfied with life and they considered themselves to be of good to excellent overall
health.
Conclusions Findings emphasise the importance of injury prevention and appropriate
post-injury care to reduce the burden experienced by Mori due to injury.
Injury is a leading contributor to the burden of death and disability in several
countries including New Zealand.
1
The 2006 New Zealand Household Disability
Survey found that one in six residents aged 15 years and over was living with a
disability. In nearly one-third of cases injury was the reported cause, and among those
aged 15-64 years it was the leading cause of disability.
2
Mori, New Zealand’s indigenous population, comprise 15% of the country’s total
population
3
and experience a disproportionate burden following injury. Those aged
15-64 years are at greater risk of mortality (RR: 2.29) and hospitalisation (RR: 1.62)
from unintentional injury than non-Mori in this age group.
4
Prevalence of disability due to injury is also higher among Mori (31.4%) than non-
Mori (29.3%) aged 15 years and over.
5
Kingi and Bray have previously qualitatively
explored Mori perceptions of disability with 15 participants.
6
Themes identified
included the impact of colonial history on knowledge of Mori language and culture,
difficulties of access to healthcare providers, traditional foods and resources, and the
disabling effect of this impact on reaching and maintaining hauora (i.e., optimal
health and well-being). Negative socioeconomic factors were also perceived as
disabling, more so than functional impairment.
6
Their study points to the impact of