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Table 2 Bivariate correlations between the ISI, the PSQI and psychological functioning among male and female adolescents

From: Validation of the German version of the insomnia severity index in adolescents, young adults and adult workers: results from three cross-sectional studies

Males

Item 1

Item 2

Item 3

Item 4

Item 5

Item 6

Item 7

Total

Sleep

        

 SOL (min)

.42***

.27***

.17***

.27***

.13**

.08*

.17***

.38***

 Awakenings

.27***

.36***

.24***

.32***

.19***

.08*

.24***

.34***

 Sleep duration (h)

-.12**

-.04

.01

-.13***

-.02

-.08*

-.10**

-.10**

 MR: Sleep quality

.54***

.46***

.34***

.71***

.38***

.23***

.54***

.71***

 MR: Restoration

.37***

.28***

.21***

.55***

.35***

.29***

.41***

.54***

 MR: Mood

.26***

.24***

.15***

.38***

.30***

.27***

.22***

.40***

 DR: Sleepiness

.33***

.28***

.15***

.37***

.35***

.26***

.31***

.45***

 DR: Concentration

.34***

.33***

.34***

.48***

.36***

.26***

.38***

.55***

 ER: Sleepiness

-.01

.07

-.03

.03

.16***

.09*

.07

.08*

 ER: Mood

.23***

.21***

.21***

.23***

.12**

.09*

.17***

.28***

Psychological functioning

        

 KIDSCREEN

-.30***

-.29***

-.23***

-.40***

-.23*

-.11

-.32***

-.38***

Females

Item 1

Item 2

Item 3

Item 4

Item 5

Item 6

Item 7

Total

Sleep

        

 SOL (min)

.47***

.27***

.22***

.40***

.19***

.09*

.31***

.44***

 Awakenings

.26***

.49***

.30***

.32***

.13***

.05

.28***

.41***

 Sleep duration (h)

-.10*

-.11**

.04

-.18***

-.11**

-.13***

-.08*

-.17***

 MR: Sleep quality

.60***

.58***

.41***

.74***

.26***

.22***

.49***

.74***

 MR: Restoration

.47***

.38***

.22***

.58***

.37***

.27***

.40***

.60***

 MR: Mood

.32***

.24***

.13**

.31***

.32***

.33***

.22***

.41***

 DR: Sleepiness

.37***

.36***

.23***

.39***

.43***

.32***

.35***

.54***

 DR: Concentration

.37***

.35***

.28***

.44***

.33***

.23***

.37***

.53***

 ER: Sleepiness

-.12**

.01

.00

.00

.12**

.15***

.05

.04

 ER: Mood

.27***

.24***

.21***

.28***

.13***

.09**

.21***

.33***

Psychological functioning

        

 KIDSCREEN

-.37***

-.36***

-.26***

-.44***

-.28***

-.25***

-.34***

-.51***

  1. Bold and bold italic coefficients are discussed in the text. Item 1 = Difficulty falling asleep; Item 2 = Difficulty staying asleep; Item 3 = Waking up too early; Item 4 = How satisfied are you with your current sleep pattern?; Item 5 = To what extent do you consider your sleep problem to interfere with your daily functioning (e.g., daytime fatigue, ability to function at work/daily chores, concentration, memory, mood, etc.)?; Item 6 = How noticeable to others do you think your sleeping problem is in terms of impairing the quality of your life?; Item 7 = How worried/distressed are you about your current sleep problem? MR morning rating, DR daytime rating, ER evening rating
  2. *p < .05, **p < .01, ***p < .001
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BMC Psychiatry

ISSN: 1471-244X

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