Consistency errors in p-values reported in Spanish psychology journals
Recent reviews have drawn attention to frequent consistency errors when reporting statistical results. Method: We have reviewed the statistical results reported in 186 articles published in four Spanish psychology journals. Of these articles, 102 contained at least one of the statistics selected for...
| Authors: | , |
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| Format: | article |
| Publication Date: | 2013 |
| Country: | España |
| Institution: | Universidad Autónoma de Madrid |
| Repository: | Biblos-e Archivo. Repositorio Institucional de la UAM |
| Language: | English |
| OAI Identifier: | oai:repositorio.uam.es:10486/665567 |
| Online Access: | http://hdl.handle.net/10486/665567 https://dx.doi.org/10.7334/psicothema2012.207 |
| Access Level: | Open access |
| Keyword: | Statistical errors Null hypothesis signifi cance testing P-value Errores estadísticos Contraste de hipótesis Valor p Estadística y Demografía / Estadística Psicología |
| Summary: | Recent reviews have drawn attention to frequent consistency errors when reporting statistical results. Method: We have reviewed the statistical results reported in 186 articles published in four Spanish psychology journals. Of these articles, 102 contained at least one of the statistics selected for our study: Fisher-F, Student-t and Pearson-χ2. Results: Out of the 1,212 complete statistics reviewed, 12.2% presented a consistency error, meaning that the reported p-value did not correspond to the reported value of the statistic and its degrees of freedom. In 2.3% of the cases, the correct calculation would have led to a different conclusion than the reported one. In terms of articles, 48% included at least one consistency error, and 17.6% would have to change at least one conclusion. In metaanalytical terms, with a focus on effect size, consistency errors can be considered substantial in 9.5% of the cases. Conclusion: These results imply a need to improve the quality and precision with which statistical results are reported in Spanish psychology journals |
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