Skip Navigation LinksHome > May 2013 - Volume 55 - Issue 5 > Respiratory Symptoms, Exhaled Nitric Oxide, and Lung Functio...
Journal of Occupational & Environmental Medicine:
doi: 10.1097/JOM.0b013e318285f453
Original Articles

Respiratory Symptoms, Exhaled Nitric Oxide, and Lung Function Among Workers in Tanzanian Coffee Factories

Sakwari, Gloria MSc; Mamuya, Simon H.D. PhD; Bråtveit, Magne PhD; Moen, Bente E. MD, PhD

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Objective: To compare chronic respiratory symptoms, fractional exhaled nitric oxide (FENO), and lung function between Robusta and Arabica coffee workers and a control group.

Methods: Chronic respiratory symptoms were assessed by a questionnaire (n = 138 coffee workers and n = 120 controls). The FENO was measured by NIOX MINO device (Aerocrine AB, Solna, Sweden). Lung function was examined by a portable spirometer.

Results: Coffee workers had higher prevalence of chronic respiratory and asthma symptoms than controls. Robusta coffee workers were exposed to higher levels of endotoxin and had more asthma symptoms than Arabica coffee workers (38% vs 18%). Coffee workers had reduced lung function associated with cumulative exposure to total dust and endotoxin.

Conclusion: Work in coffee factories is associated with small but significant lung function impairment. These changes were not associated with the level of FENO.

©2013The American College of Occupational and Environmental Medicine


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