Table 9 Predicted associations between IPQ-O and other measures to assess construct validity
From: Testing the psychometric properties of the illness perceptions questionnaire for OCD (IPQ-O)
| Â | Predicted associations with IPQ-O sub-scales |
|---|---|
Continuous variables - | |
OCD severity (Y-BOCS) | Positively correlated with identity, consequences and permanence. |
Depression (PHQ-9) | Positively correlated with: identity, consequences, permanence, emotional representation and own characteristics attributions. Negatively correlated with control and coherence. |
Anxiety (GAD-7) | Positively correlated with: identity, consequences, permanence, emotional representation. Negatively correlated with coherence. |
Attitudes towards seeking mental health services (IASMHS) | IASMHS Openess sub-scale: Positively correlated with coherence. IASMHS Indifference to stigma sub-scale: Positively correlated with coherence (greater indifference to stigma associated with better coherence) and spectrum beliefs (beliefs that OCD is on a spectrum will be associated with less concern about stigma) |
Functioning (WSAS) | Positively correlated with consequences. Negatively correlated with control. |
Categorical variables - condition management | |
No previous treatment for OCD (yes/no) | People who have low perceptions of control and permanence or perceive OCD as a spectrum condition would be less likely to have received treatment for OCD. |
Received talking therapy for OCD (yes/no) | People who have received previous talking therapy for OCD will have significantly greater scores on the control sub-scale. |
Received medication for OCD (yes/no) | People who have received medication for OCD will have significantly greater scores on the permanence sub-scales and lower scores on the spectrum sub-scale |
Plans to seek help in future (yes/no) - NHS Including: NHS General Practitioner, Self-referral to mental health services e.g. Improving Access to Psychological Therapies services (IAPT) | People who plan to seek NHS help in the future will score more highly on the control and permanence sub-scales. People who plan to seek help will score lower on the spectrum sub-scale. |
Plans to seek help in future (yes/no) - ‘other’ Including: charity organisations, support groups, internet forums, use of self-help books | People who plan to seek ‘other’ help in the future will score more highly on the control and permanence sub-scales. People who plan to seek help will score lower on the spectrum sub-scale. |
Plans to seek help in future (yes/no) - private therapy | People who plan to seek private therapy in the future will score more highly on the control and permanence sub-scales. People who plan to seek help will score lower on the spectrum sub-scale. |