Table 2 Child behavior checklist and parent–child relationships before and during the COVID-19 pandemic.

From: Longitudinal impact of COVID-19 pandemic on mental health of children in the ABCD study cohort

CBCL (T-score)

Before COVID-19 pandemic

During COVID-19 pandemic

N = 4702

N = 4885

Mean ± SD

Mean ± SD

Total score

44.8 ± 11.0

44.9 ± 11.3

Internalizing problem

47.8 ± 10.4

47.9 ± 10.5

Externalizing problem

44.3 ± 9.6

44.4 ± 9.5

Withdrawn/depressed

53.4 ± 5.7

53.7 ± 5.9

Somatic complaints

54.6 ± 5.8

54.4 ± 5.8

Social problems

52.6 ± 4.7

52.6 ± 4.8

Thought problems

53.6 ± 5.7

53.6 ± 5.7

Attention problems

53.4 ± 5.4

53.6 ± 5.6

Rule-breaking behavior

51.9 ± 3.9

51.9 ± 3.8

Aggressive behavior

52.3 ± 4.8

52.3 ± 4.8

Anxious/depressed

53.2 ± 5.8

53.3 ± 6.0

PMQ

4.40 ± 0.49

  1. M mean, SD standard deviation, CBCL child behavior checklist, PMQ parental monitoring questionnaire.