| Variable | Percentages (95% confidence interval) |
| Male | 85.2 (65.0, 94.7) | Race | | White | 83.3 (70.0, 91.5) | Black | 8.8 (4.4, 16.6) | Other race | 7.9 (2.4, 22.6) | Parent or guardian household income | | Up to $25,000 | 7.7 (3.7, 15.3) | $25,001–$50,000 | 16.3 (7.9, 30.2) | $50,001–$75,000 | 38.7 (25.7, 53.5) | More than $75,000 | 37.3 (22.2, 55.3) | How well youth converses | | No ability/lot of trouble | 7.7 (4.0, 14.3) | Little trouble | 66.2 (52.9, 77.3) | No trouble | 26.2 (16.1, 39.5) | Had a STEM major | 40.8 (25.8, 57.9) | Dependent measures | | Disability identification (youth considers self to have a disability or special need) | 69.4 (57.6, 79.1) | Self-efficacy indicators | | (1) “You can handle most things that come your way” | | Not at all like me | 4.3 (2.1, 8.5) | A little like me | 54.8 (42.1, 66.9) | Very much like me | 40.9 (29.8, 53.1) | (2) “You know how to get information you need” | | Not at all like me | 2.7 (1.2, 6.1) | A little like me | 25.2 (14.9, 39.3) | Very much like me | 72.1 (58.4, 82.7) | (3) “You can get school staff and other adults to listen to you” | | Not at all like me | 5.5 (2.8, 10.6) | A little like me | 22.8 (14.4, 34.0) | Very much like me | 71.7 (60.1, 81.0) |
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