High Salt Intake and Risk of Chronic Bronchitis: The Copenhagen Male Study—A 10-Year Followup

Table 3

Prospective analysis 1976–1986 including only men who in 1976 had no lung symptoms indicating bronchitis, 𝑛=2,183. Self-assessed high salt intake 1976 as a predictor of chronic bronchitis in 1985-86. Variables are ranked according to strength of statistical association with chronic bronchitis following multivariate adjustment in an age-adjusted multiple logistic regression analysis.

	Chronic bronchitis in 1985-86
	Odds ratio	95% CI	P
Current smoking 1976 versus not	2.6	1.7–3.8	<0.001
Occupational dust (and fumes) exposure 1976 versus not	1.9	1.3–2.8	<0.001
High salt intake 1976 versus not	1.6	1.1–2.3	0.009
Low social class (IV/V) versus higher	1.4	0.96–1.9	0.08

Excluded from the final model (𝑃>0.10): alcohol use.