Psychometric properties and validation of a four-item version of the Strauss–Carpenter scale in bipolar disorder

International Journal of Bipolar Disorders

Table 3 Reliability analysis

Strauss–Carpenter scale	Intraclass correlation coefficient (ICC)
Strauss–Carpenter scale	Coef	p	95 % CI
Item 1. Hospitalization	0.424	0.004	0.140–0.614
Item 2. Work	0.648	<0.001	0.475–0.764
Item 3. Social activity	0.609	<0.001	0.546–0.796
Item 4. Symptoms	0.588	<0.001	0.384–0.724
Strauss–Carpenter total score	0.749	<0.001	0.626–0.832