Objective: We developed and validated a drawing test version of the Pictorial Representation of Illness and Self Measure (PRISM), a visual method to assess the perceived burden of illness and illness perception. Our aim was to test whether the drawing version would allow patients more freedom to deliberately vary both the size and position of circles symbolizing illness and individual coping resources, as well as gain more information about illness representations and available resources. Design and Main Outcome Measures: We applied the PRISM-D test to 500 patients with severe somatic diseases under active hospital treatment. We used Spielberger’s State and Trait Anxiety Inventory and Beck’s Depression Inventory to assess convergent validity. Results: The PRISM-D test is applicable for inpatients and it can be used to explore their subjective representations. The modifications did not cause any loss in convergent validity as the Self-Illness Separation and the Illness Perception Measure are significantly correlated with levels of depression and anxiety. Conclusion: The drawing test enables more detailed measurement of suffering caused by illness, illness perception and more complex assessment of important factors in a patient’s life. The test is adequate for clinical use as well as research among a wide range of somatic inpatients.
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