Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

My NCBI Filters
Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
1976 1
1977 1
1995 10
1996 6
1997 8
1998 7
1999 4
2000 2
2006 5
2007 29
2008 15
2009 15
2010 10
2011 10
2012 10
2013 24
2014 21
2015 16
2016 20
2017 18
2018 11
2019 17
2020 19
2021 16
2022 24
2023 2
Text availability
Article attribute
Article type
Publication date

Search Results

296 results
Results by year
Filters applied: . Clear all
Page 1
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
Smoking cessation for people with chronic obstructive pulmonary disease.
van Eerd EA, van der Meer RM, van Schayck OC, Kotz D. van Eerd EA, et al. Among authors: kotz d. Cochrane Database Syst Rev. 2016 Aug 20;2016(8):CD010744. doi: 10.1002/14651858.CD010744.pub2. Cochrane Database Syst Rev. 2016. PMID: 27545342 Free PMC article. Review.
In Reply.
Kotz D, Batra A, Kastaun S. Kotz D, et al. Dtsch Arztebl Int. 2020 Apr 24;117(17):299. doi: 10.3238/arztebl.2020.0299. Dtsch Arztebl Int. 2020. PMID: 32530416 Free PMC article. No abstract available.
296 results