Committee's action has compromised continuing studies
| Autor: | M W. L Davis, Ronald D. Mann, L. De Caestecker, M. Lewis |
|---|---|
| Rok vydání: | 1995 |
| Předmět: |
Gynecology
medicine.medical_specialty business.industry Public health General Engineering Alternative medicine General Medicine humanities Third generation Health services Increased risk Action (philosophy) Family planning Family medicine Pill General Earth and Planetary Sciences Medicine business General Environmental Science |
| Zdroj: | BMJ. 311:1639-1639 |
| ISSN: | 1468-5833 0959-8138 |
| DOI: | 10.1136/bmj.311.7020.1639 |
| Popis: | EDITOR,--Douglas Carnall's report of the controversy over whether the third generation contraceptive pills are associated with an increased risk of thrombosis contains an error that illustrates how bias may arise in a case-control study such as that led by Professor Walter Spitzer.1 Carnall states that the study “matches … |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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