The authors of the study, led by Ronan Lyons from Swansea University, in Wales, UK, say: "Whilst considerable uncertainties remain, our best estimate is that injury-related DALYs [disability-adjusted life years] are 2.6 times greater than previously thought, and even if we accept a very conservative approach of assuming no residual disability in all losses to follow-up the population estimate would be 1.6 times earlier estimates."
Furthermore, the authors also found that the vast majority of injuries were unintentional and that the home was the most frequent location of injury.
The authors recruited patients aged over 5 years with a wide range of injuries (including fractures and dislocations, lacerations, bruises and abrasions, sprains, burns and scalds, and head, eye, chest and abdominal injuries) from hospitals in four English cities—Swansea, Nottingham, Bristol, and Guildford—between September 2005 and April 2007.
In the four study sites, a total of 1,517 injured people (median age of 37.4 years and 53.9% male) participated in the study. Using the data and information collected from patient questionnaires about their injuries and the effect on their lives, the authors found that in 2005, there were an estimated 750,999 injury-related hospital admissions, 7,982,947 emergency department attendances, and 22,185 injury-related deaths, translating to a rate per 100 000 of 1,240, 13,339, and 36·8 respectively. Putting all the information together, the authors estimated that the disability life adjusted years (DALYs) related to injury was 1,771,486 in 2005.
The authors say: "Whilst this study was carried out in the UK, the principal findings are relevant across the globe." They continue: "Our results suggest that if the pattern of underestimation seen in the UK was mirrored across the world then injuries may account for up to a quarter of global DALYs rather than a sixth as previously estimated...undoubtedly the global proportion of DALYs from injury is larger than previously estimated."
The authors conclude: "There is already evidence that policy and research responses to injury are grossly inadequate, based upon the previous estimates of the burden."