SciELO - Scientific Electronic Library Online

 
vol.60 issue5Intravenous and subcutaneous tramadol for inguinal herniorrhaphy: comparative studyContinuous spinal anesthesia with high dose of local anesthetics author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Anestesiologia

Print version ISSN 0034-7094

Abstract

BARBOSA, Fabiano Timbó  and  SOUZA, Diego Agra de. Frequency of the adequate use of statistical tests of hypothesis in original articles published in the Revista Brasileira de Anestesiologia between January 2008 and December 2009. Rev. Bras. Anestesiol. [online]. 2010, vol.60, n.5, pp. 528-536. ISSN 0034-7094.  http://dx.doi.org/10.1590/S0034-70942010000500009.

BACKGROUND AND OBJECTIVES: Statistical analysis is necessary for adequate evaluation of the original article by the reader allowing him/her to better visualize and comprehend the results. The objective of the present study was to determine the frequency of the adequate use of statistical tests in original articles published in the Revista Brasileira de Anestesiologia from January 2008 to December 2009. METHODS: Original articles published in the Revista Brasileira de Anestesiologia between January 2008 and December 2009 were selected. The use of statistical tests was deemed appropriate when the selection of the tests was adequate for continuous and categorical variables and for parametric and non-parametric tests, the correction factor was described when the use of multiple comparisons was reported, and the specific use of a statistical test for analysis of one variable was mentioned. RESULTS: Seventy-six original articles from a total of 179 statistical tests were selected. The frequency of the statistical tests used more often was: Chi-square 20.11%, Student t test 19.55%, ANOVA 10.05%, and Fisher exact test 9.49%. The frequency of the adequate use of statistical tests was 56.42% (95% CI 49.16% to 63.68%), erroneous use in 13.41% (95% CI 8.42% to 18.40%), and an inconclusive result in 30.16% (95% CI 23.44% to 36.88%). CONCLUSIONS: The frequency of inadequate use of statistical tests in the articles published by the Revista Brasileira de Anestesiologia between January 2008 and December 2009 was 56.42%

Keywords : ANESTHESIOLOGY [publication]; STATISTIC [data interpretation]; SCIENTIFIC METHODS [statistic].

        · abstract in Portuguese | Spanish     · text in English | Portuguese     · pdf in English | Portuguese