Psychometric evaluation of the Inventory of Negative Thoughts in Response to Pain (INTRP) with a community sample

Abstract

We investigated the factor structure and psychometric properties, of the Inventory of Negative Thoughts in Response to Pain (INTRP) with a sample of 99 men and 125 women. Confirmatory factor analyses provided support for the empirically derived three factors: Negative Self-Statements, Negative Social Cognitions, and Self-Blame. The factor scales had satisfactory internal consistency reliability. We found no differences between men and women on the factor scales. The INTRP factor scales did not relate significantly to age, ethnicity, marital status, or educational level. We examined the relationships between the INTRP and specific pain-related indices using partial correlational analyses, and we conducted stepwise multiple regression analyses to evaluate the relative contributions of the INTRP factor scales and self-report measures of depression and anxiety to the prediction of three pain indices.