| Autor: |
K A, Rosenblatt, D B, Thomas, E A, Noonan |
| Rok vydání: |
1992 |
| Předmět: |
|
| Zdroj: |
European journal of cancer (Oxford, England : 1990). (11) |
| ISSN: |
0959-8049 |
| Popis: |
The relations between use of high-dose and low-dose combined oral contraceptives and epithelial ovarian cancer were compared in an international hospital-based case-control study. 393 cases from seven countries were compared with 2561 matched controls. The odds ratio (OR) was somewhat lower for women who used high-dose oestrogen oral contraceptives (OR = 0.68) than for women who used low-dose preparations (OR = 0.81) although the difference could have occurred by chance. After controlling for time since last use, risk was slightly lower for long-term users of high-dose preparations than for long-term users of low-dose pills. Both high-dose and low-dose oral contraceptives protect against ovarian cancer, but the degree of protection may be slightly weaker for the newer, low-dose products. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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