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Table 2 The Children’s Sleep Habits Questionnaire scale scores according to ferritin levels

From: Parent-reported sleep problems, symptom ratings, and serum ferritin levels in children with attention-deficit/hyperactivity disorder: a case control study

 

<30 ng/mL

≥30 ng/mL

  
 

Mean ± SD(n)

Mean ± SD(n)

t

p

CSHQ subscales

    

Bedtime resistance

12.3 ± 2.9(25)

11.3 ± 3.0(16)

1.093

0.281

Sleep-onset delay*

1.9 ± 0.7(24)

1.6 ± 0.7(16)

1.316

0.196

Sleep duration

5.6 ± 1.7(25)

4.7 ± 1.5(16)

1.750

0.088

Sleep anxiety

8.4 ± 1.9(25)

7.4 ± 3.0(16)

1.133

0.269

Night wakings*

5.5 ± 1.5(24)

4.6 ± 2.3(16)

1.398

0.170

Parasomnias

12.1 ± 3.1(25)

11.6 ± 2.5(16)

0.556

0.581

Sleep-disordered breathing*

5.0 ± 2.2(25)

4.1 ± 1.2(15)

1.703

0.097

Daytime sleepiness

16.7 ± 2.5(25)

14.6 ± 4.5(16)

1.714

0.101

Total score

62.5 ± 8.5(25)

56.1 ± 12.0(16)

2.00

0.052

  1. *Numbers of subjects do not add up to total N because of missing data.
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BMC Pediatrics

ISSN: 1471-2431

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