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Table 2 Workplace hygiene status of exposed versus un-exposed workplaces

From: Biological Monitoring of Blood Naphthalene Levels as a Marker of Occupational Exposure to PAHs among Auto-Mechanics and Spray Painters in Rawalpindi

Workplace Description Ranks Painters group * (n = 20) Mechanics group * (n = 20) Control group * (n = 20) P-value a P-value b
Mechanical Exhaust System      
  Good 0 (0) 0 (0) 3 (15) P < 0.027 P < 0.027
  Satisfactory 1 (5) 1 (5) 5 (25)   
  Poor 19 (95) 19 (95) 12 (10)   
Workplace Ventilation      
  Good 0 (0) 0 (0) 2 (10) P < 0.001 P < 0.001
  Satisfactory 3 (15) 5 (25) 16 (80)   
  Poor 17 (85) 15 (75) 2 (10)   
Sunlight Penetration      
  Good 0 (0) 0 (0) 11 (55) P < 0.001 P < 0.001
  Satisfactory 20 (100) 16 (80) 7 (35)   
  Poor 0 (0) 4 (20) 2 (10)   
Workplace Overall Hygiene      
  Good 0 (0) 0 (0) 16 (80) P < 0.001 P < 0.001
  Satisfactory 1 (5) 3 (15) 4 (20)   
  Poor 19 (95) 17 (85) 0 (0)   
  1. * Frequency (% of total)
  2. ** Chi-square P-values
  3. a Car-spray painters v/s Control
  4. b Mechanics v/s Control