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. 2024 Oct 8;12:542. doi: 10.1186/s40359-024-02038-4

Table 3.

Reliability analysis coefficients of the Sleep Preoccupation Scale (SPS) n = 523

Scale Cronbach’s α McDonald’s ω Intraclass coefficient (ICC)
SPS Total 0.92 0.92 0.95
SPS CBC 0.89 0.89 0.92
SPS AC 0.88 0.88 0.91

Notes SPS CBC = Sleep Preoccupation Scale – Factror 1 Cognitive Behavioral Consequences. SPS AC = Sleep Preoccupation Scale – Factor 2 Affective Consequences. SPS Total = Total Sleep Preoccupation Scale Score. ICC was based on two-way mixed effects, consistency, single rater/measurement coefficient