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

Filters

My Custom Filters

Results by year

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

Year Number of Results
1950 1
1957 1
1958 1
1960 1
1961 1
1962 4
1963 1
1964 3
1965 45
1966 197
1967 219
1968 277
1969 293
1970 365
1971 382
1972 481
1973 584
1974 670
1975 994
1976 1320
1977 1325
1978 1562
1979 1976
1980 2290
1981 2657
1982 3028
1983 3573
1984 3708
1985 4374
1986 4995
1987 5705
1988 5811
1989 6971
1990 7719
1991 8132
1992 8811
1993 9747
1994 11671
1995 12811
1996 12731
1997 13393
1998 14411
1999 15723
2000 17208
2001 18139
2002 19191
2003 21193
2004 23670
2005 25588
2006 27492
2007 29388
2008 31176
2009 33041
2010 35826
2011 39798
2012 43272
2013 47328
2014 48701
2015 50118
2016 50921
2017 51909
2018 53297
2019 56631
2020 63586
2021 67387
2022 66898
2023 62907
2024 66552
2025 70083
2026 427

Publication date

Text availability

Article attribute

Article type

Additional filters

Article Language

Species

Sex

Age

Other

Search Results

1,155,496 results

Results by year

Filters applied: . Clear all
Page 1
Randomization in clinical studies.
Lim CY, In J. Lim CY, et al. Korean J Anesthesiol. 2019 Jun;72(3):221-232. doi: 10.4097/kja.19049. Epub 2019 Apr 1. Korean J Anesthesiol. 2019. PMID: 30929415 Free PMC article. Review.
Randomized controlled trial is widely accepted as the best design for evaluating the efficacy of a new treatment because of the advantages of randomization (random allocation). ...Despite its importance, randomization has not been properl
Randomized controlled trial is widely accepted as the best design for evaluating the efficacy of a new treatment because of th
Randomization and allocation concealment: a practical guide for researchers.
Doig GS, Simpson F. Doig GS, et al. J Crit Care. 2005 Jun;20(2):187-91; discussion 191-3. doi: 10.1016/j.jcrc.2005.04.005. J Crit Care. 2005. PMID: 16139163
Although the randomized controlled trial is the most important tool currently available to objectively assess the impact of new treatments, the act of randomization itself is often poorly conducted and incompletely reported. ...We will outline how to prepare …
Although the randomized controlled trial is the most important tool currently available to objectively assess the impact of ne …
When can a clinical trial be called 'randomized'?
Berger VW, Bears JD. Berger VW, et al. Vaccine. 2003 Jan 17;21(5-6):468-72. doi: 10.1016/s0264-410x(02)00475-9. Vaccine. 2003. PMID: 12531645 Review.
It is widely recognized that, in the context of the evaluation of medical interventions, randomized clinical trials constitute the gold standard. This is because randomization tends to balance both measured and unmeasured baseline characteristics, allo …
It is widely recognized that, in the context of the evaluation of medical interventions, randomized clinical trials con …
Ethics of the randomized clinical trial.
[No authors listed] [No authors listed] N Engl J Med. 1983 Feb 10;308(6):343-5. doi: 10.1056/nejm198302103080617. N Engl J Med. 1983. PMID: 6823238 No abstract available.
A primer on clinical trial design.
Ellimoottil C, Vijan S, Flanigan RC. Ellimoottil C, et al. Urol Oncol. 2015 Mar;33(3):116-21. doi: 10.1016/j.urolonc.2014.12.014. Epub 2015 Jan 23. Urol Oncol. 2015. PMID: 25624092 Review.
Herein, we present a brief overview of types of designs used for clinical trials and discuss the use of appropriate end points, the selection of study participants, randomization, sample size calculation, blinding, and analysis of data. ...Our goal is to prov …
Herein, we present a brief overview of types of designs used for clinical trials and discuss the use of appropriate end points …
Diabetes control and complications trial.
[No authors listed] [No authors listed] Henry Ford Hosp Med J. 1983;31(2):115-6. Henry Ford Hosp Med J. 1983. PMID: 6629834 Free article. Clinical Trial. No abstract available.
Myeloblastic leukemia: a randomized trial.
Estape J, Rodriguez-Fernandez JM, Santabarbara P. Estape J, et al. Ann Intern Med. 1985 Mar;102(3):418-9. doi: 10.7326/0003-4819-102-3-418_3. Ann Intern Med. 1985. PMID: 3882041 Clinical Trial. No abstract available.
1,155,496 results
You have reached the last available page of results. Please see the User Guide for more information.