 Setting A prospective cohort study will be conducted in India, a lower middle income country. India accounts for 20 per cent of global trauma deaths per year, hence efforts to strengthen trauma care in India are urgently needed. Data will be collected from four urban hospitals: one in Mumbai, one in Kolkata, one in Delhi, and one in Nellore. The collection of data began on the 11th of July, however only from the hospital situated in Kolkata. Once ethical permission has been formally provided data will be collected from the remaining hospitals and will continue until the desired study size is reached see study size. Data is collected by full-time project officers at the mentioned hospitals. 