1. Castro V, McCoy T, Cagan H, Rosenfield H, Murphy S, Churchill S, et al. Stratification of risk for hospital admissions for injury related to fall: cohort study. BMJ. 2014;349:g5863.
2. Janssen K, Vergouwe Y, Kalkman J, Diederick C, Grobbee D, Karel K, et al. A simple method to adjust clinical prediction models to local circumstances. Can J Anesth/J Can Anesth. 2009;56:194–201.
3. Lewis G, Curry N, Bardsley M. Choosing a predictive risk model: a guide for commissioners in England. London: The Nuffield Trust; 2011.
4. Georghiou T, Blunt I, Steventon A, Lewis G, Billings J, Bardsley M. Predictive risk and healthcare: an overview. London: The Nuffield Trust; 2011.
5. Curry N, Billings J, Darin B, Dixon J, Williams M, Wennberg D. Predictive Risk Project Literature Review. London: The King’s Fund; 2005.