A control study on pain characteristics and influencing factors in patients with depressive disorders-based on a 5-year follow-up report from the epidemiological survey of mental disorders in Shandong Province, China

Background: This study extends from the 2015 Shandong Province Epidemiological Survey of Mental Disorders in adults aged 18 and above. Over five years, it investigates pain characteristics and influencing factors in individuals with depressive disorders in Shandong Province. Methods: The study encompasses 871 individuals who met DSM-IV criteria for depressive disorders in 2015. Using 1:1:1 matching by gender, age, and residence, 825 non -afflicted individuals were selected as high -risk controls, and 825 screening -negative individuals became low -risk controls. A follow-up study in 2020 involved 1848 participants. Survey tools included a general information questionnaire, General Health Questionnaire -12 (GHQ -12), SCID-I/P, Global Pain Scale (GPS), Quality of Life Questionnaire (QLQ), PSQI, MoCA, and clinical data questionnaire. Results: GPS scores in the current depressive group were higher than in non -current depressive group ( Z = 14.36 , P < 0.01). GPS scores in study group exceeded those in high -risk and low -risk control groups ( H = 93.71 , P < 0.01). GPS scores in non -remission group were higher than in the remission group ( Z = 8.90 , P < 0.01). Regression analysis revealed positive correlations between GPS scores and physical illnesses, current depression, incumbency, GHQ -12 total score, and PSQI total score. Negative correlations were observed with QLQ total score and MoCA total score. Limitations: The study could not assess pain during the 2015 survey, limiting controlled pain analysis before and after five years. Conclusion: Depression sufferers may experience prolonged heightened pain, potentially relieved when depression subsides. Individual pain is influenced by depression, physical illnesses, sleep quality, quality of life, cognitive function, gender, residence, and occupation.