Self-reported risk factors for musculoskeletal disorders among solid waste workers in Lagos State, Nigeria

Background: Epidemiological studies have indicated an association between musculoskeletal disorders (MSDs) and physical work demands. Municipal Solid waste collection and disposal in most developing countries with inadequate or inappropriate waste management services and practices is physically demanding and increases the risk of MSDs among waste collectors. Objectives: This study determined the prevalence and self-perceived predisposing factors to MSDs amongst solid waste collectors in Lagos State, Nigeria. Methods: A descriptive cross-sectional design was used to survey 200 solid waste collectors selected using multistage sampling method. An interviewer-administered questionnaire was used to collect data on prevalence of MSDs. Perceived risk factors were assessed using questions on ergonomic work factors. Data was analyzed using Epi-info version 3.5.1. Results: The prevalence of MSDs among the solid waste collectors was 71.0%. The main body segment affected was the trunk- lower back (42.0%) and neck (37.5%), followed by the shoulder (31.5%). The self-reported risk of musculoskeletal discomfort was increased with workrelated factors such as repetitive movement of body parts during work, working under extensive pressure and awkward positioning of body when working. Conclusion: Despite a high prevalence of MSDs, there was poor attitude in adopting preventive measures. These solid waste collectors need to be taught how to prevent musculoskeletal discomfort through good posturing, and how to access appropriate care. Keywords:  Low back pain, Solid Waste, Risk Factors, Occupational Illness