More than 75 percent of Baltimore-area residents interviewed in a United Way survey said they knew someone who has battled drug or alcohol addiction, and about two-thirds said they believe treatment works. Nearly 80 percent supported increased spending for treatment programs.

"This survey supports the need for substance abuse treatment and clearly demonstrates the elevated level of concern throughout Central Maryland," said Larry E. Walton, president of United Way of Central Maryland.

In the poll, several hundred residents in Baltimore and the five surrounding counties were contacted during the past year. It was undertaken as part of an effort by the United Way with government officials, treatment providers and community groups to tackle the problem.