Background and Aim: Hospital maintenance engineers are heterogeneous group of workers responsible for a wide variety of duties including maintaining equipment, heaters, refrigerators, air-conditioners and ventilation systems, and they are susceptible to adverse health hazards. This study was aimed to characterize and correlate psychological impairment, pain severity and Work-Related Musculoskeletal Disorders (WMSDs) among hospital maintenance engineers in a Nigerian tertiary hospital. Methods: A total of 111 (76.6% response rate) hospital maintenance engineers responded in this cross-sectional survey. Standardized Nordic Questionnaire, a 100-mm horizontal Visual Analogue Scale for Pain (VAS Pain) and the Depression, Anxiety and Stress Scale (DASS-21) were used to assess WMSDs, pain intensity and psychological impairment (depression, anxiety and stress) respectively. Descriptive statistics of mean and standard deviation and percentages were used to summarize data. Bivariate tests of relationship/association and multivariate regression analyses were employed. Alpha level was set at p < 0.05.
Results:The 12-month and 7-day prevalence of WMSDs were 71.8% and 42.7%. The point prevalence rates of depression, anxiety and stress were 30.1%, 29.1% and 20.4% respectively. The highest 12-month pain severity was recorded in the hip/thigh (54.8 mm) and lower back (49.3 mm) regions while the highest present (7-day) pain severity was in the neck (65.6 mm) and shoulder (64.6 mm) regions. Presence of depressive symptoms increased the odds of having WMSD (Odd ratio (OR) = 1.04; (95% Confidence Interval (CI) = 1.09-1.69; p = 0.019) and specifically, the incidences of shoulder (OR = 1.09; CI = 0.98-1.21; p = 0.049) and upper back (OR = 1.18; CI = 1.03-1.34; p = 0.015) WMSDs. Anxiety and stress symptoms were not associated with presence of any WMSD among the respondents (p > 0.05). Respondents with higher score of depression had significant correlation with higher pain severity in the shoulder (r = 0.21; p = 0.014), lower back (r = 0.25; 0.010), knee (r = 0.25; p = 0.012) and ankle/feet (r = 0.21; p = 0.030) regions in the past year. Similarly, higher score of anxiety and stress symptoms were significantly correlated with higher pain severity in the neck, shoulder, ankle/feet, knee and lower back (r ≥ 0.21; p < 0.05).
Conclusion:There is a high prevalence of WMSDs among hospital maintenance engineers and it is significantly associated with depressive, anxiety and stress symptoms.