TABLE 1

Dropout Analysis With Regard to Availability of Parasomnia Interview

Interview Available, n (%)Interview not Available, n (%)Available versus Not Available, OR (95% CI)
Gender
 Male3334 (49.1)4206 (53.3)reference
 Female3462 (50.9)3689 (46.7)1.18 (1.11–1.26)a
FAI, mean (SD)1.05 (1.42)1.47 (1.69)0.84 (0.82–0.86)a
IQ, mean (SD)105.27 (16.31)99.14 (16.47)1.02 (1.02–1.03)a
Any Axis I disorder (DAWBA)
 No5661 (94.8)4260 (92.1)reference
 Yes310 (5.2)366 (7.9)0.64 (0.55–0.75)a
Total SDQ, mean (SD)18.16 (9.44)19.89 (10.33)0.98 (0.98–0.99)a
Physical or sexual abuse
 No5632 (89.1)5225 (91.0)reference
 Yes692 (10.9)518 (9.0)1.24 (1.10–1.40)a
Preschool domestic violence
 No4164 (66.3)3823 (65.1)reference
 Yes2120 (33.7)2046 (34.9)0.95 (0.88–1.03)
Preschool maladaptive parenting
 None2274 (38.0)1819 (39.6)reference
 Mild2993 (50.0)2284 (49.7)1.05 (0.97–1.14)
 Severe714 (11.9)496 (10.8)1.15 (1.01–1.31)a
Persistent nightmares, mean (SD)1.34 (1.14)1.23 (1.13)1.09 (1.05–1.13)a
Persistent sleep onset problems, mean (SD)1.60 (1.11)1.54 (1.14)1.04 (1.00–1.08)a
Persistent night waking, mean (SD)0.32 (0.67)0.37 (0.73)0.90 (0.85–0.96)a
Bullying involvement, age 8 yearsb
 Neutral3362 (60.0)823 (55.3)reference
 Pure victim1805 (32.2)522 (35.1).73 (.58–.90)a
 Bully/victim376 (6.7)127 (8.5).85 (.75–.96)a
 Pure bully58 (1.0)15 (1.0).95 (.53–1.68)
Bullying involvement, age 10 yearsb
 Neutral4617 (75.2)896 (71.7)reference
 Pure victim1133 (18.5)260 (20.8)0.85 (0.73–0.99)a
 Bully/victim336 (5.5)81 (6.5)0.81 (0.63–1.04)
 Pure bully50 (0.8)13 (1.0)0.75 (0.40–1.38)
  • FAI, Family Adversity Index; SDQ, Strengths and Difficulties Questionnaire.

  • a Indicates significant associations.

  • b Overt or relational victimization.