Nakajima et al. (2014) collected information on stroke patients over a 9-year period. For each patient, the type of stroke was classified into one of 5 categories by etiology.
A data frame with 45 observations on the following 3 variables.
a factor with levels
Small vessel occlusion,
Large artery atherosclerosis,
Other determined aetiology, and
Undetermined aetiology giving the etiology of the stroke
a numeric vector with the year of the observation
a numeric vector with the number of patients with a stroke of the given etiology that year
Nakajima, M., Y. Inatomi, T. Yonehara, Y. Hashimoto, T. Hirano, and Y. Ando (2014). Temporal trends in oral intake ability 3 months after acute ischaemic stroke: analysis of a single-centre database from 2003 to 2011. J Rehabil Med 46 (3), 200–205.
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