Research Article
High Salt Intake and Risk of Chronic Bronchitis: The Copenhagen Male Study—A 10-Year Followup
Table 2
Association of baseline characteristics 1976 with chronic bronchitis ten years later among men with no relevant lung symptoms at baseline, .
| | Chronic bronchitis in 1985-86 | | + | − |
| Subjects | 155 | 2028 | Age yrs | 53.1 ± 5.1 | 52.7 ± 5.1 + | High salt intake | 33.8 | 22.9 ## | Smoking | | | Current smoking | 76.8 | 54.6## | Smoking 1970/71 | 79.4 | 61.2## | Alcohol use | | | Alcohol, beverages/week | | | 0–5 | 58.1 | 60.9 | 6–20 | 36.8 | 34.5 | 21 + | 5.2 | 4.6 | Occupational dust and fumes exposure | 34.4 | 20.3## | Other characteristics | | | Low social class (IV/V) | 56.1 | 47.8++ |
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Data are presented as mean ± SD or percentages. #: high salt preference; ++: ; +: ; ##: value of Chi-squared test or unpaired -test (age).
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