Table 1.

Characteristics of Stockholm firefighter cohort

	Min	Max	Mean	Median
Birth year	1881	1960	1925	1925
Age at employment	17	57	25	24
Age at start of follow-up	18	77	38	34
Start of employment	1902	1983	1951	1951
End of employment or follow-up	1933	2012	1977	1977
Employment duration (years)	1	44	26	30