Sample size: how many participants do I need in my research?
An. bras. dermatol
;
89(4): 609-615, Jul-Aug/2014. tab, graf
Article
in English
| LILACS
| ID: lil-715543
ABSTRACT
The importance of estimating sample sizes is rarely understood by researchers, when planning a study. This paper aims to highlight the centrality of sample size estimations in health research. Examples that help in understanding the basic concepts involved in their calculation are presented. The scenarios covered are based more on the epidemiological reasoning and less on mathematical formulae. Proper calculation of the number of participants in a study diminishes the likelihood of errors, which are often associated with adverse consequences in terms of economic, ethical and health aspects.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Sample Size
/
Biomedical Research
Type of study:
Etiology study
/
Risk factors
Limits:
Humans
Language:
English
Journal:
An. bras. dermatol
Journal subject:
Dermatology
Year:
2014
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Latin American Cooperative Oncology Group/BR
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