Background: Nursing students are faced with a variety of challenges that demand effective cognitive and emotional resources. The physical and psychological well-being of the students plays a key part in the public health of the community. Despite the special  lifestyle of nursing students, few studies have addressed chronic pain in this population. Accordingly, the present study aims to identify the predictors of chronic pain among nursing students

Methods: This cross-sectional study was conducted on 1,719 nursing students aged 18-42 years, between February and November 2019. Sampling was carried out in several stages. Data were collected using seven instruments, namely a demographics survey, the characteristics of chronic pain form, Spielberger State-Trait Anxiety Inventory (STAI), the Patient Health Questionnaire-9 (PHQ-9), the Bar-on Emotional Quotient Inventory, Academic Satisfaction Scale, and Procidano and Heller Social Support Scale. Descriptive statistics, multinomial logistic regression, and regression models were used to describe the characteristics of the pain and its predictive factors

Results: The average age of the participants was 22.4 ± 2.96 years. The results of univariate analysis showed that gender (P = 0.506), mother's education (P = 0.056, P = 0.278, P = 0.278), father's education (P = 0.817, P = 0.597, P = 0.41), place of residence (P = 0.215), depression (P = 0.501), grade point average (P = 0.488), academic satisfaction (P = 0.183) and chronic pain weren't significantly correlated with chronic pain in nursing students. The results of the multiple logistic regression models showed that chronic pain was positively correlated with age, social support, state anxiety, and trait anxiety (OR = 1.07, 95% CI: 1.02-1.12; OR = 0.95, 95% CI: 0.93-0.97; OR = 1.03, 95% CI: 1.02-1.05; and OR = 1.97, 95% CI: 0.95-1.99; respectively)

Conclusion: The prevalence of chronic pain was relatively high in these students. In addition, age, social support, and anxiety could be important factors in the development or persistence of chronic pain in nursing students. The results also provided basic and essential information about the contributing factors in this area. However, consideration of factors such as referral for treatment, home medications for pain relief, and outcomes of chronic pain are suggested in future longitudinal studies

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