Table 2.
Individual participant characteristics
| Completed, N = 3,0811 | Withdrawn, N = 2,5171 | Overall, N = 5,5981 | p-value2 | |
|---|---|---|---|---|
| Age (Participants < 20 Years) | 10.0 (6.0, 14.0) | 11.0 (7.0, 14.0) | 10.0 (6.0, 14.0) | <0.001 |
| Age (Participants 21 and Older) | 40 (36, 46) | 39 (34, 45) | 40 (35, 45) | <0.001 |
| Sex (Participants Less Than 20 Years) | 0.561 | |||
| Male | 834 (52%) | 698 (52%) | 1,532 (52%) | |
| Female | 756 (47%) | 651 (48%) | 1,407 (48%) | |
| Other | 7 (0.4%) | 3 (0.2%) | 10 (0.3%) | |
| Sex (Participants 21 and Older) | <0.001 | |||
| Female | 1,011 (68%) | 899 (77%) | 1,910 (72%) | |
| Male | 468 (32%) | 264 (23%) | 732 (28%) | |
| Other | 4 (0.3%) | 0 (0%) | 4 (0.2%) | |
| Race | <0.001 | |||
| White or Caucasian | 2,137 (69%) | 1,100 (44%) | 3,237 (58%) | |
| Black or African American | 518 (17%) | 1,071 (43%) | 1,589 (28%) | |
| Prefer Not to Answer | 197 (6.4%) | 199 (7.9%) | 396 (7.1%) | |
| More than One Race | 128 (4.2%) | 101 (4.0%) | 229 (4.1%) | |
| Asian | 69 (2.2%) | 21 (0.8%) | 90 (1.6%) | |
| American Indian or Alaska Native | 26 (0.8%) | 20 (0.8%) | 46 (0.8%) | |
| Other | 6 (0.2%) | 5 (0.2%) | 11 (0.2%) | |
| Ethnicity | 0.038 | |||
| Non-Hispanic | 2,669 (87%) | 2,132 (85%) | 4,801 (86%) | |
| Hispanic | 353 (11%) | 312 (12%) | 665 (12%) | |
| Prefer Not to Answer | 58 (1.9%) | 71 (2.8%) | 129 (2.3%) | |
| Other | 1 (<0.1%) | 2 (<0.1%) | 3 (<0.1%) | |
1
Median (IQ.R); n (%)
2
Wilcoxon rank sum test; Fisher’s Exact Test for Count Data with simulated p-value (based on 2000 replicates)