OBJECTIVE: The primary aim of this analysis is to understand the sources women currently use to form an opinion about HT since the first publication of the Women's Health Initiative's (WHI) findings in 2002 and the increased availability of medical information online.DESIGN: A cross-sectional self administered online survey was used in this study.MATERIALS AND METHODS: Eligible women were sent a link to the survey, validated in a pilot study, via a web based health management tool. The survey focused on several key domains including demographics, knowledge of the risks and benefits of HT, opinion toward HT, and past health history. All participants were part of a large, predominately rural, health system and were identified through their electronic health records. The women were age 54 to 65, used the online tool, and were active patients within the health system. 5,733 women were eligible and 1,704 women completed the survey.RESULTS: The majority of women, nearly 68%, reported their physician as the primary source of information used to shape their opinions of HT. Magazines (42%) and television (38%) were the next top sources of information. 68% of women report no awareness of the WHI studies while almost 67% report not seeing any recent articles in the media about HT.CONCLUSIONS: Despite the number of competing sources of information and the controversy surrounding the use of HT, physicians remain the primary source of information shaping women's perception of HT. However, other sources still play an important role in the formation of their opinions. Understanding where women obtain their knowledge base, and how their opinions are shaped, may help physicians educate them about HT. This will allow women to take a more active part in their health care, helping them to make the best possible decision concerning the use of HT for menopause. OBJECTIVE: The primary aim of this analysis is to understand the sources women currently use to form an opinion about HT since the first publication of the Women's Health Initiative's (WHI) findings in 2002 and the increased availability of medical information online. DESIGN: A cross-sectional self administered online survey was used in this study. MATERIALS AND METHODS: Eligible women were sent a link to the survey, validated in a pilot study, via a web based health management tool. The survey focused on several key domains including demographics, knowledge of the risks and benefits of HT, opinion toward HT, and past health history. All participants were part of a large, predominately rural, health system and were identified through their electronic health records. The women were age 54 to 65, used the online tool, and were active patients within the health system. 5,733 women were eligible and 1,704 women completed the survey. RESULTS: The majority of women, nearly 68%, reported their physician as the primary source of information used to shape their opinions of HT. Magazines (42%) and television (38%) were the next top sources of information. 68% of women report no awareness of the WHI studies while almost 67% report not seeing any recent articles in the media about HT. CONCLUSIONS: Despite the number of competing sources of information and the controversy surrounding the use of HT, physicians remain the primary source of information shaping women's perception of HT. However, other sources still play an important role in the formation of their opinions. Understanding where women obtain their knowledge base, and how their opinions are shaped, may help physicians educate them about HT. This will allow women to take a more active part in their health care, helping them to make the best possible decision concerning the use of HT for menopause.