| Literature DB >> 8449016 |
L Villard-Mackintosh1, M P Vessey.
Abstract
Data from the Oxford.FPA prospective study show that oral contraceptive use and pregnancy have no discernible effect on the risk of developing multiple sclerosis (MS). Women of parity 0-2 developed MS twice as often as women of parity 3 or more but the difference did not reach statistical significance. Smoking may be a risk factor for developing MS. A nested case-control analysis did not identify any associations between MS onset and preceding illnesses.Entities:
Keywords: Behavior; Biology; Case Control Studies; Central Nervous System; Central Nervous System Effects; Contraception; Contraceptive Methods; Demographic Factors; Developed Countries; England; Europe; Family Planning; Fertility; Fertility Measurements; Northern Europe; Oral Contraceptives; Parity; Physiology; Population; Population Dynamics; Pregnancy; Prospective Studies; Reproduction; Research Methodology; Research Report; Smoking; Studies; United Kingdom
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Year: 1993 PMID： 8449016 DOI： 10.1016/0010-7824(93)90088-o
Source DB: PubMed Journal: Contraception ISSN： 0010-7824 Impact factor: 3.375