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Table 4 Comparison of sleep-related problems between the poor mental health and control groups

From: Mental health and sleep habits/problems in children aged 3–4 years: a population study

 

Poor mental health group

Control group

pa

 

Mean ± SD

Mean ± SD

 

Pre-sleep domain

3.83 ± 2.49

3.30 ± 2.25

0.214

Nighttime domain

6.52 ± 3.36

5.22 ± 3.26

0.008*

Daytime domain

3.69 ± 2.32

2.57 ± 1.92

< 0.001**

  1. SD standard deviation
  2. aMann-Whitney-U test, *p < 0.05, **p < 0.001