Chronic pain is a multidimensional experience involving biological, psychological, and social processes. The aim of this master's thesis was to examine the associations of emotional distress, symptoms following a traumatic experience, and the level of perceived threat during a traumatic experience with pain interference. The study also examined how these variables were associated with individual domains of everyday functioning and whether pain interference differed according to sex and age group.
The empirical part of the study employed a quantitative, cross-sectional, correlational design. The initial sample consisted of 179 participants, including 109 women and 70 men. Data were collected using an anonymous online questionnaire. Emotional distress was assessed using the DASS-21, pain interference using the Brief Pain Inventory (BPI), and symptoms following a traumatic experience using the PCL-5. The level of perceived threat during a traumatic experience was assessed using seven items rated on a scale from 0 to 4. The overall variable was calculated as the mean of all seven item ratings, with higher values indicating a higher average level of perceived threat. As the main study variables deviated from a normal distribution, associations were examined using Spearman's rank correlation coefficient.
The results showed statistically significant positive associations between emotional distress and pain interference and between symptoms following a traumatic experience and pain interference. More detailed analyses showed that all three DASS-21 dimensions and all four PCL-5 symptom clusters were significantly positively associated with pain interference. No statistically significant association was found between the level of perceived threat during a traumatic experience and overall pain interference. No statistically significant differences in pain interference were found according to sex or among age groups. Emotional distress and symptoms following a traumatic experience were significantly positively associated with all seven examined domains of pain interference, whereas the level of perceived threat was significantly positively associated only with interference with enjoyment of life. Pain during the previous week was reported by 52% of participants. Participants who reported pain during the previous week had higher pain interference, higher emotional distress, higher levels of symptoms following a traumatic experience, and a higher level of perceived threat than participants who did not report pain. Among valid responses regarding pain location, pain in multiple body areas was reported most frequently. The highest average pain interference was observed in enjoyment of life, followed by mood and normal work.
The findings indicate that current emotional distress and symptoms following a traumatic experience are significantly associated with pain interference, whereas a higher level of perceived threat during a traumatic experience was not significantly associated with greater overall pain interference in the studied sample. The results support a comprehensive biopsychosocial understanding of chronic pain. However, due to the cross-sectional correlational design, the findings should be interpreted cautiously, as they do not allow conclusions regarding causal relationships.
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