Cox regression analysis of mortality in months 0 to 3, and from month 3 onwards.

*All patients with unknown HIV status died within the first 3 months.£ Tests for interaction of TBM grade with treatment: p = 0.46 (months 0-3) and p = 0.18 (after month 3).$ Tests for interaction of HIV status with treatment: p = 0.29 (months 0-3) and p = 0.17 (after month 3).Gender and serum sodium were not significant in either model and didn't affect the other parameters. They were therefore omitted from the final mode.