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Table 1 Relevant demographic characteristics, occupational data and relevant past medical and family history of the studied workers by Chi Square test:

From: Cardiotoxicity of Freon among refrigeration services workers: comparative cross-sectional study

Relevant characteristics and occupational data Freon-exposed workers
(N = 23)
Non-exposed workers
(N = 23)
P-value
Age (years)( ± SD) 45.9 + 4.4 43.7 ± 3.2 0.058
Special habits & life style N (%)    
Excess salt intake 14 (60.9%) 9 (39.1%) 0.14
Cigarette smokers 11 (47.8%) 7 (30.4%) 0.22
Stressful life 14 (60.9%) 17 (73.9%) 0.34
Duration of employment (years) ( ± SD) 20.9 + 3.3 19.3 ± 2.7 0.078
Relevant past medical and family history    
Past history of nephrotoxic drug abuse N (%) 6 (26.1%) 3 (13.04%) 0.45
Past history of hepatitis C N (%) 2 (8.7%) 4 (17.4%) 0.66
Family history of dyslipidemia and/or hypertension N (%) 19 (82.6%) 13 (56.5%) 0.054
Family history of coronary artery disease N%) 4 (17.4%) 1 (4.3%) 0.34