@misc{indiciae9e4400fea70e, title = {Sample sizes calculations for ordered categorical data.}, author = {J Whitehead}, year = {1996}, doi = {10.1002/(sici)1097-0258(19960530)15:10<1065::aid-sim288>3.0.co;2-9}, url = {https://pubmed.ncbi.nlm.nih.gov/8783443/}, note = {Source identifier: 8783443} }