Table 1 Characteristics of COPD cases and the overall ODSS cohort (1983–2020).
From: Risk of chronic obstructive pulmonary disease in a large cohort of Ontario, Canada workers
COPD cases | ODSS overall | |||
|---|---|---|---|---|
Males | Females | Males | Females | |
Total | 29,445 | 14,693 | 1,040,009 | 525,250 |
Year of birth Median (IQR) | 1955 (1950–1961) | 1955 (1950–1960) | 1962 (1954–1970) | 1961 (1953–1969) |
Years of follow-up Median (IQR) | 5 (2–8) | 4 (2–8) | 12 (6–14) | 10 (5–14) |
Age at start of follow-up Median (IQR) | 51 (46–56) | 51 (46–56) | 45 (37–52) | 44 (39–55) |
Age at end of follow-up Median (IQR) | 57 (51–61) | 57 (52–61) | 57 (50–65) | 59 (51–65) |
