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Statistics review 8: Qualitative data – tests of association
This review introduces methods for investigating relationships between two qualitative (categorical) variables. The χ(2 )test of association is described, together with the modifications needed for small samples. The test for trend, in which at least one of the variables is ordinal, is also outlined...
| Autores principales: | , , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
BioMed Central
2004
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC420070/ https://www.ncbi.nlm.nih.gov/pubmed/14975045 http://dx.doi.org/10.1186/cc2428 |
| _version_ | 1782121464654200832 |
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| author | Bewick, Viv Cheek, Liz Ball, Jonathan |
| author_facet | Bewick, Viv Cheek, Liz Ball, Jonathan |
| author_sort | Bewick, Viv |
| collection | PubMed |
| description | This review introduces methods for investigating relationships between two qualitative (categorical) variables. The χ(2 )test of association is described, together with the modifications needed for small samples. The test for trend, in which at least one of the variables is ordinal, is also outlined. Risk measurement is discussed. The calculation of confidence intervals for proportions and differences between proportions are described. Situations in which samples are matched are considered. |
| format | Text |
| id | pubmed-420070 |
| institution | National Center for Biotechnology Information |
| language | English |
| publishDate | 2004 |
| publisher | BioMed Central |
| record_format | MEDLINE/PubMed |
| spelling | pubmed-4200702004-06-04 Statistics review 8: Qualitative data – tests of association Bewick, Viv Cheek, Liz Ball, Jonathan Crit Care Review This review introduces methods for investigating relationships between two qualitative (categorical) variables. The χ(2 )test of association is described, together with the modifications needed for small samples. The test for trend, in which at least one of the variables is ordinal, is also outlined. Risk measurement is discussed. The calculation of confidence intervals for proportions and differences between proportions are described. Situations in which samples are matched are considered. BioMed Central 2004 2003-12-30 /pmc/articles/PMC420070/ /pubmed/14975045 http://dx.doi.org/10.1186/cc2428 Text en Copyright © 2004 BioMed Central Ltd |
| spellingShingle | Review Bewick, Viv Cheek, Liz Ball, Jonathan Statistics review 8: Qualitative data – tests of association |
| title | Statistics review 8: Qualitative data – tests of association |
| title_full | Statistics review 8: Qualitative data – tests of association |
| title_fullStr | Statistics review 8: Qualitative data – tests of association |
| title_full_unstemmed | Statistics review 8: Qualitative data – tests of association |
| title_short | Statistics review 8: Qualitative data – tests of association |
| title_sort | statistics review 8: qualitative data – tests of association |
| topic | Review |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC420070/ https://www.ncbi.nlm.nih.gov/pubmed/14975045 http://dx.doi.org/10.1186/cc2428 |
| work_keys_str_mv | AT bewickviv statisticsreview8qualitativedatatestsofassociation AT cheekliz statisticsreview8qualitativedatatestsofassociation AT balljonathan statisticsreview8qualitativedatatestsofassociation |