Figure 3.

Associations between socioeconomic/demographic characteristics and trial participation. ^†Odds ratio (OR) compares nonwhite to white patients; ^‡OR compares patients older than 18 yr with commercial insurance to those with noncommercial insurance; ^¥OR compared patients who are married with those who are single; ^¶OR compares patients older than 18 yr who are employed compared with those who are unemployed; *OR compares patients older than 18 yr with a high school degree with those without a degree; ^∈OR compares patients older than 25 yr with a college degree or higher with those without a high school degree.