Table 3.

Prevalence and odds ratio for chronic respiratory symptoms among male coffee workers and controls from Tanzania and Ethiopia.

Chronic respiratory symptom	Tanzaniaa and Ethiopiab
	Controlsc n = 229	Coffee workers n = 252	${\text{Odds ratio}}_{\text{adj}}^{\text{d}}$
	n (%)	n (%)	OR (95% CI)b
Cough	16 (7.0)	122 (48.4)**	11.3 (6.4–20.1)
Cough with sputum	6 (2.6)	60 (23.8)**	10.3 (4.3–24.6)
Breathlessness	18 (7.9)	56 (22.2)**	3.2 (1.8–5.7)
Chest tightness	18 (7.9)	60 (23.8)**	3.5 (2.0–6.3)
Wheezing	14 (6.1)	41 (16.3)**	2.4 (1.2–4.6)

^aSakwari et al. (15).

^bAbaya et al. (16).

^cWater bottling and fish factory workers.

^dAdjusted for age and current smoking;

^**p < 0.01 in Chi-square test.