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A simple formula for the calculation of sample size in pilot studies.
Viechtbauer W, Smits L, Kotz D, Budé L, Spigt M, Serroyen J, Crutzen R. Viechtbauer W, et al. Among authors: kotz d. J Clin Epidemiol. 2015 Nov;68(11):1375-9. doi: 10.1016/j.jclinepi.2015.04.014. Epub 2015 Jun 6. J Clin Epidemiol. 2015. PMID: 26146089
CONSORT 2010 Statement-unfinished update?
Cals JW, van Amelsvoort LG, Kotz D, Spigt MG. Cals JW, et al. Among authors: kotz d. J Clin Epidemiol. 2011 Jun;64(6):579-82. doi: 10.1016/j.jclinepi.2010.10.007. Epub 2011 Jan 5. J Clin Epidemiol. 2011. PMID: 21208776 No abstract available.
The efficacy and safety of a nicotine conjugate vaccine (NicVAX®) or placebo co-administered with varenicline (Champix®) for smoking cessation: study protocol of a phase IIb, double blind, randomized, placebo controlled trial.
Hoogsteder PH, Kotz D, van Spiegel PI, Viechtbauer W, Brauer R, Kessler PD, Kalnik MW, Fahim RE, van Schayck OC. Hoogsteder PH, et al. Among authors: kotz d. BMC Public Health. 2012 Dec 6;12:1052. doi: 10.1186/1471-2458-12-1052. BMC Public Health. 2012. PMID: 23216646 Free PMC article. Clinical Trial.
301 results