About 16 percent of all U.S. workers without health insurance needed addiction treatment within the past year, but only 12.6 percent were able to access services at a specialty addiction-treatment center, a new survey finds.

The need was particularly acute among men and workers ages 18-25, according to the Substance Abuse and Mental Health Services Administration (SAMHSA). However, researchers found that 80 percent of workers assessed as requiring treatment did not themselves see a need to get help.

The report, Substance Use Treatment Need Among Uninsured Workers, was based on a survey of 10,210 full-time workers ages 18-64 who did not have health insurance.