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Table 1 Demographic and job characteristics among bricklayers and construction supervisors participating in both a baseline and a one-year follow up survey, December 2009 to January 2011

From: Musculoskeletal disorders among construction workers: a one-year follow-up study

  Bricklayers (n=222) Construction supervisors (n=177)
  Median IQR Median IQR
Age (years) 50 13 51 14
Years employed in construction 32 16 33 17
Years employed in present occupation 27 20 15 15
Years employed at present company 10 19 18 18
Working hours per week 40 0 45 10
  1. IQR Inter Quartile Range.