By 6 months , despite an increase in survival ( IPC 1525 days [ SD 606 ] vs no IPC 1481 days [ 643 ] ; mean difference 45 days , 95 % CI -02 to 91 ) , there was a non-significant increase in quality-adjusted survival associated with IPC ( IPC 276 days [ SD 406 ] vs no IPC 267 days [ 396 ] ; mean difference 09 days , 95 % CI -21 to 39 ) .