Prevalence and related factors of musculoskeletal discomfort among bus drivers of Bangkok Mass Transit Authority

Main Article Content

Sipira Chirdsanguan
Pornchai Sithisarankul

Abstract

Background: Bus drivers of Bangkok Mass Transit Authority (BMTA) have limited body movements. They also have improper postures at work, and have to remain in their seats for a long time; this may cause them musculoskeletal discomfort (MSD).


Objectives: To investigate the prevalence and related factors of MSD among bus drivers of BMTA.


Methods: The study design was a cross-sectional descriptive study wherein 275 BMTA’s bus drivers were recruited by multi-stage sampling method, which included a cluster sampling method and stratified sampling method. Data were collected using self-reported questionnaires which included personal factors, occupational factors, psychosocial factors and musculoskeletal symptoms (modified from Nordic musculoskeletal questionnaire). Data were then analyzed by using frequency, percentage, mean, standard deviation, t – test, Chi-Square analysis, and Multiple Logistic Regression


Results: Regarding overall MSD among bus drivers of BMTA, the 7-day prevalence and 12-month prevalence were 69.5% and 68.4%, respectively; they occurred in every part of the body. The highest prevalence among the body parts were the neck and lower back. Sickness and absence due to overall MSD was 28.0%. Factors related to 7-day MSD were: having underlying disease, drinking alcohol at least 1 glass per week, working in the afternoon shift, improper driving posture (sit with the back arched toward the front and the upper body rested on the steering-wheel, the legs stretched straight while stepping on the pedal). Factors related
to 12-month MSD were: having underlying disease, duration of employment, experiencing inappropriate temperature, driving in a twisted or tilted position and high level of social support.


Conclusion: The prevalence of MSD among BMTA bus drivers was high. Prevention programs should be provided such as promoting appropriate driving posture and focusing on their own health.

Article Details

Section
Original article