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X Demographics
Mendeley readers
| Title |
Sample size: how many participants do I need in my research?*
|
|---|---|
| Published in |
Anais Brasileiros de Dermatologia, January 2014
|
| DOI | 10.1590/abd1806-4841.20143705 |
| Pubmed ID | |
| Authors |
Jeovany Martínez-Mesa, David Alejandro González-Chica, João Luiz Bastos, Renan Rangel Bonamigo, Rodrigo Pereira Duquia |
| 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. |
X Demographics
The data shown below were collected from the profiles of 14 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 2 | 14% |
| Canada | 1 | 7% |
| Unknown | 11 | 79% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 12 | 86% |
| Science communicators (journalists, bloggers, editors) | 1 | 7% |
| Practitioners (doctors, other healthcare professionals) | 1 | 7% |
Mendeley readers
The data shown below were compiled from readership statistics for 912 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 1 | <1% |
| Brazil | 1 | <1% |
| Unknown | 910 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Master | 139 | 15% |
| Student > Bachelor | 128 | 14% |
| Unspecified | 110 | 12% |
| Student > Ph. D. Student | 78 | 9% |
| Researcher | 38 | 4% |
| Other | 142 | 16% |
| Unknown | 277 | 30% |
| Readers by discipline | Count | As % |
|---|---|---|
| Unspecified | 111 | 12% |
| Nursing and Health Professions | 92 | 10% |
| Medicine and Dentistry | 91 | 10% |
| Psychology | 53 | 6% |
| Social Sciences | 40 | 4% |
| Other | 224 | 25% |
| Unknown | 301 | 33% |