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Table 4 Comparison of the BISQ items among infants with or without sleep problems based on maternal view

From: Persian version of brief infant sleep questionnaire (BISQ): a psychometric evaluation

Items

Maternal view

p a

With no sleep problem

(n = 568)

With mild to severe sleep problems (n = 78)

Nocturnal sleep duration (hour)

7.78 ± 1.26b

7.16 ± 1.26

< 0.001

Daytime sleep duration (hour)

3.79 ± 1.63

3.97 ± 1.64

0.475

Number of waking at night

0.72 ± 1.19

2.12 ± 1.80

< 0.001

Night waking duration (hour)

1.22 ± 1.07

1.96 ± 1.32

< 0.001

Nocturnal sleep latency (hour)

0.30 ± 0.22

0.43 ± 0.28

< 0.001

Sleep onset time (hour)

23.19 ± 1.02

23.74 ± 1.30

< 0.001

  1. Abbreviations BISQ: Brief Infant Sleep Questionnaire
  2. a Calculated by the Mann‒Whitney test
  3. b Mean ± SD