If retirement savings patterns and demographic trends hold, a growing share of the nation's retirees will spend their final years making unpleasant choices between essentials such as housing, medication and food.Those choices may be particularly stark and frequent for African American and Hispanic households. A new joint Washington Post- Kaiser Family Foundation - Harvard University Poll indicates that in the years leading up to the recession few were building the kind of personally-controlled retirement savings that many white workers have.One in four African Americans and just one in six Hispanics own stocks, bonds or mutual funds compared to about half of white workers, according to the poll.