Table 7 Bivariate Correlations Between the ISI, the PSQI and Psychological Functioning among Male and Female Adult Workers

Males

Item 1

Item 2

Item 3

Item 4

Item 5

Item 6

Item 7

Total

Sleep

 SOL (min)

.51***

.27***

.21***

.28***

.10*

.13**

.25***

.36***

 Awakenings

-.18***

.52***

.46***

.45***

.18***

.05

.37***

.47***

 Sleep duration (h)

-.20***

-.20***

-.20***

-.27***

-.04

-.02

-.23***

-.25***

 MR: Sleep quality

.48***

.65***

.56***

.69***

.28***

.18***

.65***

.74***

 MR: Restoration

.40***

.47***

.39***

.56***

.36***

.23***

.53***

.61***

 MR: Mood

.31***

.30***

.22***

.37***

.33***

.21***

.35***

.42***

 DR: Sleepiness

.32***

.36***

.34***

.45***

.40***

.27***

.45***

.53***

 DR: Concentration

.37***

.42***

.44***

.43***

.39***

.22***

.45***

.56***

 ER: Sleepiness

-.07

.12*

.17**

.06

.06

.08

.10*

.11*

 ER: Mood

.26***

.25***

.25***

.29***

.17***

.07

.31***

.33***

 SF12

-.27***

-.35***

-.35***

-.37***

-.25***

-.20***

-.42***

-.46***

Females

Item 1

Item 2

Item 3

Item 4

Item 5

Item 6

Item 7

Total

Sleep

 SOL (min)

.28**

.22*

.21*

.34***

.06

.07

.32***

.31***

 Awakenings

.34***

.63***

.36***

.55***

.16

.03

.48***

.54***

 Sleep duration (h)

-.25**

-.27**

-.18*

-.10

.04

.04

-.11

-.18*

 MR: Sleep quality

.50***

.63***

.47***

.74***

.35***

.13

.73***

.75***

 MR: Restoration

.37***

.44***

.31***

.62***

.29***

.20*

.58***

.59***

 MR: Mood

.29**

.23*

.27**

.38***

.24**

.14

.34***

.39***

 DR: Sleepiness

.28**

.44***

.31***

.46***

.36***

.11

.53***

.52***

 DR: Concentration

.13

.23*

.31*

.33***

.36***

.15

.33

.36***

 ER: Sleepiness

.13

.01

.08

.01

.13

.12

.06

.05

 ER: Mood

.23**

.25**

.30**

.34***

.17

.06

.33***

.33***

 SF12

-.22*

-.35*

-.30**

-.45***

-.27**

-.07

-.41***

-.43***