Table 3.

Cronbach’s α and test-retest reliability coefficients for the daily OCD symptom scale (d-OCS).

	OCD (n=20)	Psychiatric controls (n=27)	Healthy controls (n=27)	All (n=74)
Cronbach’s alpha mornings	.87–.94	.87–.95	.75–.89	.91–95
Cronbach’s alpha afternoons	.90–.94	.87–.95	.75–.88	.91–.94
Cronbach’s alpha evenings	.88–.90	.89–.96	.78–.91	.90–.94
Day 1 morning & day 7 morning	77**	.66**	.48*	.69**
Day 1 afternoon & day 7 afternoon	.86**	72**	74**	.84**
Day 1 evening to day 7 evening	.58*	.60**	.75**	.68**
Day 1 average to day 7 average	.86**	.70**	.82**	.82*

^*p < .05

^**p < .01