The percentage of seniors 65 years old or older who are widowed by gender.
Department of Health and Human Services, Administration on Aging - http://www.aoa.gov/
AoA is the Federal focal point and advocate agency for older persons and their concerns. In this role, AoA works to heighten awareness among other Federal agencies, organizations, groups, and the public about the valuable contributions that older Americans make to the Nation and alerts them to the needs of vulnerable older people. Through information and referral and outreach efforts at the community level, AoA seeks to educate older people and their caregivers about the benefits and services available to help them.
USA.gov: Seniors - http://www.usa.gov/Topics/Seniors.shtml/
Official information and services from the U.S. government regarding all aspects of seniors' lives.