There are 5 items on obsessions and 5 items on compulsions, with the wording similar for the 5 statements.
Responses a scored from 0 (good) to 4 (poor).
subscore for obsessions =
= SUM(points for items 1 to 5)
subscore for compulsions =
= SUM(points for items 6 to 10)
total score =
= SUM(points for all 10 items)
Interpretation:
• minimum score for each subscore and total score: 0
• maximum subscore: 20
• maximum total score: 40
• The higher the score, the more severe the symptoms.
Performance:
• The inter-rater reliability was excellent.
• There is good internal consistency, with the Cronbach alpha around 0.90.
