COMMERCIAL DRIVERS

Risk Factors and Prevalence of Contrast Sensitivity Impairment among Commercial Motor Vehicle Drivers in Benin City, Nigeria

Publisher / Conference Name
The Department of Life Sciences, School of Science
University of Management and Technology, Lahore, Pakistan
Abstract / Summary
Background. Contrast sensitivity (CS) is the innate ability of the eyes to discern any var-iation in luminance or brightness between an object and its background within a given space. CS is important for recognizing lane markers, road signs, and oncoming traffic while driving, especially in low contrast environments, such as at night or during foggy weather. This survey aimed to evaluate the risk factors and prevalence of CS impairment among drivers of commercial motor vehicles in Benin City, Edo State, Nigeria. Methods. This study employed an observational cross-sectional survey of 341 drivers of commercial motor vehicles aged 20-70 years (with the mean age of 48.09 years ± 11.21 years) in Benin City. The sample comprised 326 (96.6%) male drivers and 15 (4.4%) fe-male drivers. The sample was selected using the purposive random sampling technique. The data was collected through the adjusted National Eye Institute Visual Functioning Questionnaire-25. Pelli-Robson t est was performed to assess c ontrast sensitivity. Data was analysed using IBM-SPSS (version 29.0). Chi-square test was used to observe significant differences between CS and the associated risk factors. Results. The prevalence of impaired CS in this study was 21.7%. It increased with the increase in age from 7.9% among the age group 20-30 years to 4 8.0% among the age group >60 years. Higher educational level was found to correlate with decreased CS impairment. Conclusion. The high prevalence of CS in this study could be a threat to safe driving, especially in low contrast environments, if appropriate measures are not put in place to identify drivers with CS impairment. Routine CS assessment of drivers is recommended preceding the issuance of driver’s license and relicensing.
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Relationship between Contrast Sensitivity and Stereopsis among Commercial Motor Vehicle Drivers' in Benin City Metropolis, Edo State, Nigeria

Publisher / Conference Name
Journal of the Nigerian Optometric Association
Abstract / Summary
Purpose: Contrast sensitivity (CS) and stereopsis play significant roles in discerning variation in brightness between a figure and its background, including judging accurately the location of objects in the visual space. The purpose of this research was to ascertain the relationship between contrast sensitivity and stereopsis impairment among drivers of commercial motor-vehicles in the city of Benin, Edo State, Nigeria. Methods: A cross-sectional survey of 341 commercial motor-vehicle drivers aged 20 - 70 years with mean age of 48.09 years ± 11.21 standard deviation in Benin City Metropolis using a purposive random sampling technique was conducted. Data were obtained using adjusted National Eye Institute Vision Function Questionnaire. Pelli-Robson test was done to assess contrast sensitivity. Stereopsis was examined with TNO Random Dot Stereogram Chart. Data was analysed with version 29.0 of IBM-SPSS using Chi-square test and Pearson coefficient of correlation, and reported in tables and chart. Significance level was considered at Probability value < 0.05. Results: 341 commercial drivers that comprised 326 (95.6%) males and 15 (4.4%) females were recruited for the study. The prevalence of impaired contrast sensitivity was 21.7%. Prevalence of impaired gross and fine stereopsis was 18.8% and 83.9% respectively. There was a significant interrelationship linking contrast sensitivity with gross stereopsis (r = 0.202; P <0.01) and fine stereopsis (r = 0. 135; P <0.05). Conclusion: This study demonstrated that stereopsis decreased with decrease in contrast sensitivity. Routine contrast sensitivity and stereopsis assessment of drivers are recommended prior to issuance of drivers’ license and re- license.
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PATTERN AND PREVALENCE OF UNDIAGNOSED HYPERTENSION AMONG TRANSPORT WORKERS IN BENIN CITY, EDO STATE, NIGERIA.

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Abstract
Background: Undiagnosed hypertension remains a major public health problem globally, particularly among occupational groups exposed to prolonged work stress, sedentary lifestyle, and poor access to routine healthcare. Transport and logistics
workers are especially vulnerable because of the nature of their work, yet many cases remain undetected until complications develop.
Objective: This study assessed the prevalence, distribution, and factors associatedwith undiagnosed hypertension among transport and logistics workers in Benin City, Edo State.
Methodology: A descriptive cross-sectional study was conducted among 315 transport and logistics workers selected using a multistage sampling technique. Oredo Local Government Area was selected at the first stage, while Central Motor Park was
selected at the second stage using cluster sampling. Data were collected using a semi- structured interviewer-administered questionnaire adapted from the WHO STEP wise approach. Blood pressure was measured using a standard mercury sphygmomanometer and stethoscope, while weight and height were measured using standard procedures. Respondents with systolic blood pressure ≥140 mmHg and/or diastolic blood pressure ≥90 mmHg who had no previous diagnosis of hypertension
and were not on antihypertensive medication were classified as having undiagnosed hypertension. Data were analysed using IBM SPSS version 25. Descriptive statisticswere summarized using frequencies, percentages, means, and standard deviations. Chi-square test and binary logistic regression using the backward stepwise (conditional) method were used to determine factors associated with undiagnosed hypertension at p < 0.05. Results: The mean age of respondents was 50.53 ± 11.87 years. Slightly more than half (52.5%) had good knowledge of hypertension. The prevalence of hypertension was 47.8%, while the prevalence of undiagnosed hypertension was 24.0%. Nearly half of the respondents were prehypertensive, 26.7% had stage 1 hypertension, and
xv 18.3% had stage 2 hypertension. Undiagnosed hypertension was more common among respondents aged 31–40 years, those with primary education, motorcyclists and taxi drivers, those with shorter work experience, and respondents who worked
more than 10 hours daily. Smoking and physical inactivity were significantly associated with undiagnosed hypertension at bivariate level (p < 0.05). At multivariate level, primary education (AOR = 3.44; 95% CI: 1.16–10.21) and lack of regular
physical activity (AOR = 2.28; 95% CI: 1.12–4.64) remained significant predictors of undiagnosed hypertension. Conclusion: Undiagnosed hypertension is a significant health problem among transport and logistics workers in Benin City. The burden of hypertension was high, knowledge of hypertension was only moderate, and many respondents were exposed to important behavioural and occupational risk factors. Regular blood pressure screening, targeted health education, and workplace-based interventions are recommended to improve early detection and reduce the burden of hypertension and its complications among transport workers
Supervisor(s)
co-supervisor

PREVALENCE OF WORK RELATED MUSCULOSKELETAL DISORDERS AMONG INTRA CAMPUS COMMERCIAL DRIVERS IN UNIVERSITY OF BENIN

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Abstract
Background of study: Musculoskeletal disorders can affect different parts of the body, upper and lower back, neck, shoulders and extremities. Driving involves routine muscular efforts, awkward sitting postures, long distance driving and exposure to whole body vibrations which are recognized as factors that can lead to musculoskeletal disorders.
Aim: To determine the prevalence of work related musculoskeletal disorders among intra campus commercial drivers in University of Benin
Methods: A cross-sectional study was conducted among 80 male intra campus commercial drivers. Nordic Musculoskeletal Questionnaire (NMQ) was used to assess lifetime, 12 months and 7 days prevalence of low back pain, neck pain and shoulder pain. Descriptive statistics was used to describe the obtain data. Chi square and spearman rho correlation test were used to assess the association and correlation between driving hours, age, BMI, driving duration with prevalence of low back pain, neck pain and shoulder with p value set at 0.05.
Results: The overall lifetime prevalence of low back pain, neck pain, shoulder pain were 50%, 15% and 33.8%. BMI and driving hours were associated with lifetime prevalence of low back pain (p<0.05) while driving duration was associated with 12 month prevalence of neck pain (p=0.03). Driving hours was also associated with life time prevalence of shoulder pain (p=0.04)
Conclusion: The Intra-campus commercial drivers in University of Benin have high prevalence of work related musculoskeletal disorders with low back pain taking the highest percentage, but low prevalence of shoulder pain and lastly neck pain in this study. It was also established from the findings of this study that BMI, driving hours, duration of driving contributes to the risk of experiencing MSDs
Supervisor(s)
co-supervisor

PREVALENCE OF ALCOHOL CONSUMPTION AMONG COMMERCIAL DRIVERS IN BENIN CITY

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Publication Type
Abstract
Alcohol has been reported to be frequently used among commercial drivers
in western societies. The study aimed to estimate the prevalence of alcohol use among long
distance commercial drivers in Benin City. Methods: A cross-sectional descriptive survey was carried out among commercial drivers
from randomly selected parks in major local government (Egor, Oredo and Ikpoba Okha) in
Benin City. Data was collected using a well-structured, questionnaire developed from
previous literatures review. The instruments consist of different parts, namely demographic;
prevalence of use of alcohol and reasons for alcohol use, analysis was mainly descriptive. Results: Majority (83.78%) used alcohol. Most of the reported alcohol used was spirit
(67.57%), beer (15.54%). Those (77.7%) with income rate less than N50,000 tends to
consume spirit while those (9.5%) with income rate of N100,000 and above tends to consume
more of beer. Less than half (42.6%) of the respondents reported to have injured as a result of
drinking. Conclusion: The findings of the study demonstrated that large population of drivers consume
alcohol prior to driving and this has negative impact on the safety and health status of the
drivers. It should be recommended that the sale of alcohol in the bus parks should be
prohibited and defaulters should be punished.
Supervisor(s)
co-supervisor