Outcomes and follow up.

All results except follow up length have been displayed as total number with percentage proportion in brackets. Follow up length has been represented as median with IQR in brackets. Mortality rates have been displayed as number of deaths with percentage proportion of at risk population for time period in brackets. Statistical significance was determined using unpaired t-test for continuous variable, chi-square test for categorical variables with a sample size over five, and Fisher’s exact test for categorical variables with a sample size equal to or less than five.