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Table 1 Comparison of key variables between participants and nonparticipants*

From: Perceived parental support in childhood and adolescence and suicidal ideation in young adults: a cross-sectional analysis of the i-Share study

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)  
  1. *Data are from the i-Share cohort, 2013–2017
  2. **P-Values are based on Kruskall-Wallis test for continuous variables and the Chi2 test for categorical variables