TY - GEN AU - Pharoah,Paul D P TI - Neither off the peg nor made to measure calculations are fit for purpose SN - 1756-1833 PY - 2012///1204 KW - Clinical Trials as Topic KW - statistics & numerical data KW - Research Design KW - Sample Size N1 - Publication Type: Letter; Comment UR - https://doi.org/10.1136/bmj.e6585 ER -