TY - JOUR T1 - LETTER TO THE EDITOR: SAMPLE SIZES CALCULATIONS FOR ORDERED CATEGORICAL DATA by J. Whitehead,Statistics in Medicine, 12, 2257-2272 (1993). JO - Statistics in Medicine PY - 1996/05/30 AU - JULIOUS SA AU - CAMPBELL MJ ED - DO - DOI: 10.1002/(sici)1097-0258(19960530)15:10<1065::aid-s PB - Wiley VL - 15 IS - 10 SP - 1065 EP - 1066 Y2 - 2024/12/22 ER -