Table 1.

Means and standard deviations for all measures

Measures	Mean	SD	Number of Items
Gender	0.46 (0.46)	0.50 (0.50)	1
Age	4.05 (4.05)	1.11 (1.11)	1
Loneliness_W2	5.28 (5.29)	1.96 (1.97)	3
Loneliness_W3	5.46 (5.53)	1.89 (2.01)	3
PTSD	18.65 (18.70)	6.79 (6.85)	10
Depression	14.45 (14.49)	5.03 (5.07)	8
Anxiety	13.14 (13.15)	4.54 (4.57)	7
Aggression	15.49 (15.52)	5.46 (5.50)	9
Trauma	2.31 (2.32)	2.55 (2.58)	10
Family conflict	1.62 (1.61)	0.74 (0.74)	6

Gender = Female = 0, Male = 1; Age = 1 = 12, 2 = 13, 3 = 14, 4 = 15, 5 = 16, 6 = 17, 7 = 18; Loneliness = Three items adapted from the Roberts Version of the UCLA Loneliness Scale including the prompt “Since learning about the Corona Virus, have you felt the following” (Roberts et al., 1993); PTSD = Post traumatic stress subscale of the Trauma Symptom Checklist for Children (TSCC; Briere, 1996); Depression = Depression subscale of the TSCC (Briere, 1996); Anxiety = Anxiety subscale of the TSCC (Briere, 1996); Aggression = Aggression subscale of the TSCC (Briere, 1996); Trauma = Adverse Childhood Experiences questionnaire (ACEs; Finkelhor et al., 2013); Family conflict = Negative interactions factor of the Network of Relationships Inventory: Behavioral Systems Version – Short Form (NRI: BSV-SF; Furman & Buhrmester, 2009); W2 = Wave 2 assessment; W3 = Wave 3 assessment

Values in parentheses indicate means and standard deviations before imputing the missing data