@article{article, title = {{LETTER TO THE EDITOR: SAMPLE SIZES CALCULATIONS FOR ORDERED CATEGORICAL DATA by J. Whitehead,Statistics in Medicine, 12, 2257-2272 (1993).}}, publisher = {{Wiley}}, url = {{}}, year = {{1996}}, month = {{5}}, author = {{JULIOUS SA and CAMPBELL MJ}}, doi = {{10.1002/(sici)1097-0258(19960530)15:10<1065::aid-s}}, volume = {{15}}, journal = {{Statistics in Medicine}}, issue = {{10}}, pages = {{1065-1066}}, note = {{Accessed on 2025/07/12}}}