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Table 5 Internal consistency, 2-week test-retest reliability, and measurement error of the SHI

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

Subscale

Chronbach’s α

ICC (2, 1) (95% CI)

SEM

MDC

Sleep disturbing B/E

.74

.77 (.73-.89)

2.08

5.75

Irregular sleep-wake schedule

.70

.83 (.76-.88)

1.32

3.65

Total

.75

.83 (.73-.89)

2.71

7.49

  1. Note: ICC: intraclass correlation coefficient; SEM: standard error of measurement; MDC: minimum detectable change; B/E: behavior and environment.
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Health and Quality of Life Outcomes

ISSN: 1477-7525

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