Table 1.
Descriptive statistics of 194 501 male construction workers with normal blood pressure in the cohort
| N | % | |
|---|---|---|
| Year of birth | ||
| ≤ 1910 | 1269 | 0.7 |
| 1911–1920 | 8004 | 4.1 |
| 1921–1930 | 14,818 | 7.6 |
| 1931–1940 | 25,017 | 12.9 |
| 1941–1950 | 46,543 | 23.9 |
| 1951–1960 | 40,364 | 20.8 |
| 1961–1970 | 51,901 | 26.7 |
| 1971–1980 | 6585 | 3.4 |
| BMI category | ||
| Normal (≥ 18.5–25 kg/m2) | 142,122 | 73.1 |
| Overweight (≥ 25–35 kg/ m2) | 52,379 | 26.9 |
| Smoking habits | ||
| Non-smoker | 88,895 | 45.7 |
| Former smoker | 26,789 | 13.8 |
| Smoker at enrolment (< 15 cig/day) | 45,134 | 23.2 |
| Smoker (≥ 15 cig /day) | 33,683 | 17.3 |
| Region | ||
| Reference | 93,812 | 48.2 |
| Colder | 74,931 | 38.5 |
| Coldest | 25,756 | 13.2 |
| Missing | 2 | 0 |
| Noise | ||
| ≤ 75 dB(A) | 26,779 | 13.8 |
| 76–85 dB(A) | 84,829 | 43.6 |
| > 85 dB(A) | 54,480 | 28.0 |
| Missing | 28,413 | 14.6 |