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Table 7 Correlations between the SHI subscale and total scores and background and outcome variables

From: Psychometric evaluation of the sleep hygiene index: a sample of patients with chronic pain

 

Sleep disturbing B/E

Irregular sleep-wake schedule

Total score

Age

-.26

-.38*

-.39*

Sexa

-.23

-.14

-.24

Education

.05

-.05

.01

Pain duration

-.08

-.03

-.07

Pain intensity

-.03

.15

.06

Depression

.12

.51*

.37*

Pain-related anxiety

.15

.46*

.35*

Sleep quality

.17

.52*

.41*

  1. Note: *p < .006 adjusted p level of 0.006. amale coded 0, female coded 1. SHI: Sleep Hygiene Index; B/E: behavior and environment. For concurrent validity, it was hypothesized that the SHI subscale and total scores are significantly positively correlated with four outcome variables (i.e., pain intensity, depression, pain-related anxiety, sleep quality).