Full Text
The Full Text of this article is available as a PDF (186.4 KB).
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Black N. Why we need observational studies to evaluate the effectiveness of health care. BMJ. 1996 May 11;312(7040):1215–1218. doi: 10.1136/bmj.312.7040.1215. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Black N. Why we need qualitative research. J Epidemiol Community Health. 1994 Oct;48(5):425–426. doi: 10.1136/jech.48.5.425-a. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Brennan P., Croft P. Interpreting the results of observational research: chance is not such a fine thing. BMJ. 1994 Sep 17;309(6956):727–730. doi: 10.1136/bmj.309.6956.727. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Datta M. You cannot exclude the explanation you have not considered. Lancet. 1993 Aug 7;342(8867):345–347. doi: 10.1016/0140-6736(93)91478-5. [DOI] [PubMed] [Google Scholar]
- Egger M., Smith G. D. Misleading meta-analysis. BMJ. 1995 Mar 25;310(6982):752–754. doi: 10.1136/bmj.310.6982.752. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Greenhalgh T. Papers that summarise other papers (systematic reviews and meta-analyses). BMJ. 1997 Sep 13;315(7109):672–675. doi: 10.1136/bmj.315.7109.672. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Grisso J. A. Making comparisons. Lancet. 1993 Jul 17;342(8864):157–160. doi: 10.1016/0140-6736(93)91351-l. [DOI] [PubMed] [Google Scholar]
- Nicholl J., Turner J. Effectiveness of a regional trauma system in reducing mortality from major trauma: before and after study. BMJ. 1997 Nov 22;315(7119):1349–1354. doi: 10.1136/bmj.315.7119.1349. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sackett D. L. Bias in analytic research. J Chronic Dis. 1979;32(1-2):51–63. doi: 10.1016/0021-9681(79)90012-2. [DOI] [PubMed] [Google Scholar]
- Sheldon T. A. Please bypass the PORT. BMJ. 1994 Jul 16;309(6948):142–143. doi: 10.1136/bmj.309.6948.142. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Sitthi-amorn C., Poshyachinda V. Bias. Lancet. 1993 Jul 31;342(8866):286–288. doi: 10.1016/0140-6736(93)91823-5. [DOI] [PubMed] [Google Scholar]