title: Risk-based Analysis of Construction Accidents in Iran During 2007-2011-Meta Analyze Study.
abstract: BACKGROUND
  The present study aimed to investigate the characteristics of occupational accidents and frequency and severity of work related accidents in the construction industry among Iranian insured workers during the years 20072011.
  
  
  METHODS
  The Iranian Social Security Organization (ISSO) accident database containing 21,864 cases between the years 2007-2011 was applied in this study. In the next step, Total Accident Rate (TRA), Total Severity Index (TSI), and Risk Factor (RF) were defined. The core of this work is devoted to analyzing the data from different perspectives such as age of workers, occupation and construction phase, day of the week, time of the day, seasonal analysis, regional considerations, type of accident, and body parts affected.
  
  
  RESULTS
  Workers between 15-19 years old (TAR=13.4%) are almost six times more exposed to risk of accident than the average of all ages (TAR=2.51%). Laborers and structural workers (TAR=66.6%) and those working at heights (TAR=47.2%) experience more accidents than other groups of workers. Moreover, older workers over 65 years old (TSI=1.97%> average TSI=1.60%), work supervisors (TSI=12.20% >average TSI=9.09%), and night shift workers (TSI=1.89% >average TSI=1.47%) are more prone to severe accidents.
  
  
  CONCLUSIONS
  It is recommended that laborers, young workers, weekend and night shift workers be supervised more carefully in the workplace. Use of Personal Protective Equipment (PPE) should be compulsory in working environments, and special attention should be undertaken to people working outdoors and at heights. It is also suggested that policymakers pay more attention to the improvement of safety conditions in deprived and cold western regions.
authors.affiliation: 1. Civil and Environmental Engineering Faculty, Amirkabir University of Technology , Iran.
authors.forename: Mehran
authors.initials: M
authors.lastname: Amiri
authors.affiliation: 2. Environmental Research Center, Amirkabir University of Technology , Tehran, Iran.
authors.forename: Abdollah
authors.initials: A
authors.lastname: Ardeshir
authors.affiliation: 3. Industrial Engineering and Management Systems Department, Amirkabir University of Technology , Iran.
authors.forename: Mohammad Hossein
authors.initials: MH
authors.lastname: Fazel Zarandi
keywords: Construction safety; Iran; Occupational accidents; Risk-based analysis