Mortality associated with oral contraceptive use. Confounding might have accounted for results

Comment

A Szarewski et al. BMJ. 1999.

. 1999 Aug 7;319(7206):386.

No abstract available

Comment on

Mortality associated with oral contraceptive use: 25 year follow up of cohort of 46 000 women from Royal College of General Practitioners' oral contraception study.
Beral V, Hermon C, Kay C, Hannaford P, Darby S, Reeves G. Beral V, et al. BMJ. 1999 Jan 9;318(7176):96-100. doi: 10.1136/bmj.318.7176.96. BMJ. 1999. PMID: 9880284 Free PMC article.

1. Beral V, Hermon C, Kay C, Hannaford P, Darley S, Gillian R. Mortality associated with oral contraceptive use: 25 year follow up of cohort of 46 000 women from Royal College of General Practitioners’ oral contraceptive study. BMJ. 1999;318:96–100. . (9 January.) - PMC - PubMed
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1. Beral V, Hermon C, Kay C, Hannaford P, Darley S, Gillian R. Mortality associated with oral contraceptive use: 25 year follow up of cohort of 46 000 women from Royal College of General Practitioners’ oral contraceptive study. BMJ. 1999;318:96–100. . (9 January.) - PMC - PubMed
1. Beral V, Hermon C, Kay C, Hannaford P, Darley S, Gillian R. Mortality associated with oral contraceptive use: 25 year follow up of cohort of 46,000 women from Royal College of General Practitioners’ oral contraception study. BMJ. 1999;318:96–100. . (9 January.) - PMC - PubMed
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