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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: Parkinsonism Relat Disord. 2011 May 20;17(6):406–409. doi: 10.1016/j.parkreldis.2011.05.004

Table.

Power of study by Rajput et al.[1]

Reduction (%) in number of Purkinje cells in ET cases vs. controls (Rajput et al.[1]) Sample size used by Rajput et al.[1] Power to detect a 20% reduction in number of Purkinje cells in ET cases vs. controls Sample size needed for adequate power to detect a 20% reduction in Purkinje cells in ET
Purkinje cell count 1 (sectioned Through any part of nucleolus) 23.7% 7 (ET) vs. 2 (controls) 15.2% 7 (ET) vs. 17 (controls)
Purkinje cell count 2 (sectioned Through any part of nucleus 11.3% 7 vs. 2 17.6% 7 vs. 15
Purkinje cell count 3 (sectioned Through any part of cell body) 5.8% 7 vs. 2 13.7% 7 vs. 19
Reduction (%) in number of Purkinje cells in ET cases vs. PD cases (Rajput et al.[1]) Sample size used by Rajput et al.[1] Power to detect a 20% reduction in number of Purkinje cells in ET cases vs. PD cases Sample size needed for adequate power to detect a 20% reduction in Purkinje cells in ET
Purkinje cell count 1 (sectioned Through any part of nucleolus) 0.0% 7 (ET) vs. 6 (PD) 35.1% 7 (ET) vs. 17(PD)
Purkinje cell count 2 (sectioned Through any part of nucleus 31.4% 7 vs. 6 41.2% 7 vs. 15
Purkinje cell count 3 (sectioned Through any part of cell body) 9.3% 7 vs. 6 31.2% 7 vs. 19