Vancouver Obsessional Compulsive Inventory

Symptom dimensions in obsessive–compulsive disorder: From normal cognitive intrusions to clinical obsessions

“…The moderate to large correlations with OC symptom measures indicate that the INPIOS and OC measures are related but separate constructs, and this finding is consistent with the assumption that there is a continuum between OIT and obsessions, and supports the relevance of using INPIOS with clinical OCD samples. The low association with depressive and anxious symptoms in the clinical OCD samples supports the divergent validity, an aspect that has been criticized (Grabill et al, 2008) in relation to other instruments measuring OC symptoms, like the VOCI (Thordarson et al, 2004). In addition, the INPIOS' first-order factors exhibited higher associations with their OCI-R subscale counterparts than with the other OCI-R subscales, thus supporting the idea that they capture the core symptom dimensions of OCD.…”

“…Then, the OCD participants' INPIOS score on the subscale with the same content as their main obsession (e.g., aggressive INPIOS subscale for patients with an aggressive main obsession) was compared with the scores of other participants on the same INPIOS dimension (e.g., aggressive INPIOS subscale for non-aggressive OCDs) using t-tests corrected for multiple compar- isons. Following Thordarson et al (2004), we expected "aggressive" OCD patients to have higher scores on the aggressive subscale of the INPIOS than the other OCD patients, "cleaners" would have higher scores on INPIOS-contamination scores, and the like. Results (see Table 5) support the known-groups validity for all the subscales except for the order scale, for which the comparison could not be made, as only one participant presented order as his/her main obsessive content.…”

Concurrent validity of the Yale–Brown Obsessive–Compulsive Scale–Symptom checklist

“…Additionally, small but significant correlations were found between Y-BOCS-SC hoarding scale and the MOCI slowness (r 5 .47) and doubt (r 5 .33) symptom subscales as well as between checking symptoms on the Y-BOCS-SC and PI (r 5 .30). These results are limited, however, because the MOCI does not assess a broad spectrum of OCD symptoms (Thordarson et al, 2004) and the PI fails to assess hoarding symptoms and to discriminate between general worries and obsessions (Burns, Keortge, Formea, & Sternberger, 1996).…”

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“…Clinically significant changes in hoarding scores with a confidence interval was calculated according to Jacobson [55] from reported means and standard deviations for hoarding and non-hoarding OCD samples; the nonclinical status cut-point was calculated from reported means and standard deviations for the hoarding OCD sample and non-clinical sample [46]. Statistical analysis was performed using IBM SPSS Statistic 22.…”

“…The outcome of interest measure was the Vancouver Obsessional Compulsive Inventory Hoarding Subscale (VOCI-H, [46]). Vancouver Obsessional Compulsive Inventory is a 55-item self-reported questionnaire with very good internal consistency of >0.9 and good test-retest reliability of 0.8 in OCD setting.…”