About 15 percent of Americans age 65 and over are poor, according to the federal government’s alternative definition of poverty, known as the Supplemental Poverty Measure, a yardstick that takes into account seniors’ out-of-pocket medical expenses, as well as income and tax effects not included in the standard measure of poverty. A compelling new video profiles poor older Americans who live in Baltimore, rural West Virginia, and Los Angeles. In the video, produced by the Kaiser Family Foundation, a non-profit research and policy organization focused on health care, the seniors identify rising rents and medical expenses as major explanations of financial hardship, which can mean lacking enough money for food. Squared Away also has interviewed seniors living in a Boston…