@article{Hemming:340114, recid = {340114}, author = {Hemming, Karla and Girling, Alan}, title = {A menu-driven facility for power and detectable-difference calculations in stepped-wedge cluster-randomized trials, erratum}, journal = {Stata Journal}, address = {2016-01}, number = {199-2024-496}, year = {2016}, url = {http://ageconsearch.umn.edu/record/340114}, doi = {https://doi.org/10.22004/ag.econ.340114}, }