Background: The development of a pain-management program tailored to the specific needs of patients with chronic low back pain (CLBP) requires the proper assessment of psychosocial factors affecting each individual. The Chronic Pain Coping Inventory-42 (CPCI-42) refers to coping strategies, which are commonly defined as the cognitive and behavioral techniques an individual may resort to in stressful or demanding situations. Evidence from a number of sources suggests that differences in pain coping strategies may significantly affect how an individual deals with chronic pain. We aimed to adapt the CPCI-42 to Polish cultural conditions (PL-CPCI-42) and then verify its psychometric properties based on a group of patients treated surgically due to herniated lumbar discs and coexisting spondylotic changes.
Material and methods: The average age of the study participants (n=90) was 43.47 years (SD 10.21). The average duration of chronic low back pain (CLBP) was 49.37 months (SD 64.71). Lumbosacral spine X-rays and magnetic resonance imaging scans were performed and all patients completed the PL-CPCI-42 and the Polish versions of the Numeric Pain Rating Scale (NPRS-PL) twice. Internal consistency of the PL-CPCI-42, floor and ceiling effects, test-retest reliability, and criterion validity were analyzed.
Results: Resting, guarding, and coping self-statements were frequently used as coping strategies both in the test and in the retest, in contrast to relaxation and exercise/stretch. The NPRS-PL result was 5.70 cm in the test and 5.66 in the retest. Cronbach's alpha values were recorded for the asking for assistance, coping self-statements, and seeking social support domains (0.83, 0.80, 0.83, respectively). Test-retest reliability of the PL-CPCI-42 varied from 0.53 (relaxation domain) to 0.84 (asking for assistance and coping self-statements domains).
Conclusions: The present study provides evidence of the validity of the PL-CPCI-42 and supports its usefulness in assessing chronic pain coping strategies, which are especially important to pain adjustment and in the creation of multidisciplinary pain management programs for patients with severe CLBP.