Format
A data frame with 144 observations on the following four variables.
Patient- a patient identifier variable.
Treat- post-surgery treatments are either immediate mobilisation in a carbon-fibre orthosis with three 1.5cm heel raises (1) or traditional plaster cast immobilisation (2).
Time- recorded at baseline (1), six months (2) and one year (3) post-surgery.
Activity- ability to undertake usual activities post-surgery; this was scored by each patient as either no problem (1), some problem (2) or an inability (3) to perform usual activity (e.g. work, leisure, housework etc).
Source
Costa, M.L., MacMillan, K., Halliday, D., Chester, R., Shepstone, L., Robinson, A.H.N., Donell, S.T. (2006). Randomised controlled trials of immediate weight-bearing mobilisation for rupture of the tendon Achillis. Journal of Bone and Joint Surgery (British) 88-B, 69-77.