No, the very same study is not conducted on women.
Physicians' Health Study II was specifically designed to test common vitamins and multivitamins. It was randomized and placebo-controlled.
Nurses' Health Study is a much broader study. It looks at many different health issues. And it's not randomized. They ask nurses to fill in questionnaires on a regular basis.
Nurses' study did look at the multivitamins. I found the summary of their results in this article:
Do Multivitamins Make You Healthier?
http://www.wellsource.com/articles-mhc/ … thier.html
Here's the summary:
[Nurses' Health Study] found no significant health advantage to taking multivitamins, except for a slightly lower risk for colon cancer in women taking multivitamins for more than 15 years. (Some research shows folic acid to be protective against bowel cancer.) Researchers also found a slight increased risk for fatal non-Hodgkin's lymphoma in multivitamin users.
The article mentions another large study called The Women's Health Initiative. It too examined many different health issues. Here's their publication on multivitamins:
Multivitamin use and risk of cancer and cardiovascular disease in the Women's Health Initiative cohorts
After a median follow-up of 8.0 and 7.9 years in the clinical trial and observational study cohorts, respectively, the Women's Health Initiative study provided convincing evidence that multivitamin use has little or no influence on the risk of common cancers, CVD (cardio-vascular desease), or total mortality in postmenopausal women.