More brain injuries occur than estimated

According to the BIONIC (Brain Injury Outcomes New Zealand in the Community) study, the true incidence worldwide could be up to six times higher than WHO estimates (100–300 per 100,000 person-years).

The authors examined records from public hospitals, rehabilitation centres, prisons, primary care, residential care as well as coronary and autopsy reports to document all new cases of TBI that occurred over a one-year period.

The total incidence per 100,000 person-years was 790 cases, including 749 mild cases and 41 moderate to severe cases. More than a third (36%) did not present to hospital with acute TBI.

Based on these findings, the authors estimate that 54 to 60 million people worldwide sustain a TBI every year,  of which 2.2 to 2.6 million suffer a moderate to severe injury.

“Our estimates are the first to include more mild cases of TBI that are not usually treated in hospital and, thus, are often overlooked in official

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