Predicting nursing home adherence to a clinical trial intervention: lessons for the conduct of cluster randomized trials.
Tjia J, Mazor KM, Field T, Doherty P, Spenard A, Gurwitz JH. Predicting nursing home adherence to a clinical trial intervention: lessons for the conduct of cluster randomized trials. J Am Geriatr Soc. 2011 Dec; 59(12):2332-6.