Uchemadu7Nwachukwu/Nnewi-Noise-Exposure-Study

Occupational noise exposure and health effects among industrial workers in Nnewi, Nigeria # 🔊 Occupational Noise Exposure and Health Outcomes Among Industrial Workers in Nnewi, Nigeria --- ## 📖 Overview This repository contains the datasets, R scripts, statistical analyses, and visualizations for a cross-sectional study investigating **occupational noise exposure and associated health outcomes among industrial workers in Nnewi, Anambra State, Nigeria**. The study involved **350 industrial workers** and examined: - Occupational noise exposure levels - Sources of workplace noise - Auditory health effects - Non-auditory health effects - Dose-response relationships - Effectiveness of personal protective equipment (PPE) --- # 📊 Key Findings ## Noise Exposure | Parameter | Result | |-----------|--------:| | Mean Noise Level | **91.9 dBA** | | Noise Range | **76.7–106.0 dBA** | | Workers Exposed Above 90 dBA | **66.2%** | --- ## Prevalence of Health Problems | Health Outcome | Prevalence | |---------------|-----------:| | Headaches | **62.3%** | | Chronic Fatigue | **58.6%** | | Poor Concentration | **58.6%** | | Irritability | **57.4%** | | Hearing Difficulty | **56.3%** | | Tinnitus | **49.1%** | | Hypertension | **19.7%** | --- ## Dose–Response Relationship Workers exposed to **very high noise levels** experienced significantly greater health risks compared with workers exposed to lower noise levels. | Health Outcome | Odds Ratio | |---------------|-----------:| | Chronic Fatigue | **4.38** | | Irritability | **3.62** | | Headaches | **3.35** | | Hearing Difficulty | **3.18** | | Hypertension | **3.00** | --- ## PPE Effectiveness Consistent use of hearing protection substantially reduced the likelihood of adverse health outcomes. | Health Outcome | Risk Reduction | |---------------|---------------:| | Chronic Fatigue | **85%** | | Headaches | **84%** | | Tinnitus | **81%** | | Hearing Difficulty | **65%** | --- # 📈 Visualizations The repository includes publication-quality figures. ### Figure 1 – Primary Sources of Occupational …