TY - RPRT TI - Sample size calculations for paired or matched ordinal data. AU - S A Julious AU - M J Campbell PY - 1998 DO - 10.1002/(sici)1097-0258(19980730)17:14<1635::aid-sim881>3.0.co;2-k UR - https://pubmed.ncbi.nlm.nih.gov/9699235/ ID - 9699235 ER -