Correction to: BMC Medical Research Methodology 10, 1 (2010)
Following publication of the original article [1], the authors would like to correct the number of sample size in the fourth paragraph under the heading Sample Size for Pilot Studies.
The sentence currently reads:
Using a 95% CI for the proportion of eligible patients who complete the assessment form, a margin of error (ME) of 0.05, a lower bound of this CI of 0.70, and an expected completion rate of 75% based on an educated guess, the required sample for the pilot study would be at least 75 patients.
The sentence should read:
Using a 95% CI for the proportion of eligible patients who complete the assessment form, a margin of error (ME) of 0.05, a lower bound of this CI of 0.70, and an expected completion rate of 75% based on an educated guess, the required sample for the pilot study would be at least 289 patients.
The original article [1] has been corrected.
References
Thabane L, Ma J, Chu R, et al. A tutorial on pilot studies: the what, why and how. BMC Med Res Methodol. 2010;10:1. https://doi.org/10.1186/1471-2288-10-1.
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The online version of the original article can be found at https://doi.org/10.1186/1471-2288-10-1.
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Thabane, L., Ma, J., Chu, R. et al. Correction to: A tutorial on pilot studies: the what, why and how. BMC Med Res Methodol 23, 59 (2023). https://doi.org/10.1186/s12874-023-01880-1
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DOI: https://doi.org/10.1186/s12874-023-01880-1