Table 1 Comparison of key variables between participants and nonparticipants*
Characteristic | Participants (n = 10,015) | Nonparticipants (n = 1233) | p ** |
|---|---|---|---|
Age, mean (SD) | 20.0 (1.8) | 19.7 (1.7) | <.0001 |
Female, No. (%) | 7579 (75.7) | 935 (75.8) | 0.904 |
Parental divorce or separation, No. (%) | 3114 (31.1) | 349 (40.4) | <.0001 |
Parental death, No. (%) | 376 (3.8) | 145 (14.2) | <.0001 |
Did not live in parental home during childhood, No. (%) | 196 (2.0) | 73 (6.1) | <.0001 |
Perceived economic status in childhood, No. (%) | <.0001 | ||
Adequate to very comfortable | 9193 (91.8) | 1024 (83.1) | |
Difficult to very difficult | 822 (8.2) | 209 (17.0) | |
Parental history of depression, No. (%) | 3925 (43.8) | 478 (54.2) | |
Personal history of depression or attempted suicide, No. (%) | 1274 (13.7) | 242 (24.7) | <.0001 |
Suicidal thoughts, No. (%) | <.0001 | ||
No | 7872 (78.6) | 529 (65.0) | |
Occasional | 1775 (17.7) | 208 (25.6) | |
Frequent | 368 (3.7) | 77 (9.5) | |
Perceived parental support, No. (%) | <.0001 | ||
Extremely strong | 3277 (32.7) | 250 (23.9) | |
Strong | 4065 (40.6) | 372 (35.6) | |
Moderate | 1907 (19.0) | 265 (25.3) | |
Low | 610 (6.1) | 120 (11.5) | |
None | 156 (1.6) | 39 (3.7) |