Augmenting the logrank test in the design of clinical trials in which non-proportional hazards of the treatment effect may be anticipated

Royston, P; Parmar, MKB; (2016) Augmenting the logrank test in the design of clinical trials in which non-proportional hazards of the treatment effect may be anticipated. BMC Medical Research Methodology , 16 (1) 10.1186/s12874-016-0110-x . Green open access

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