Table 1 Description of the cohort.
| Country | Follow‐up start | Follow‐up end (year, all 31 December) | Persons only employed in asphalt paving | Person‐years | Bladder cancers* |
|---|---|---|---|---|---|
| Denmark | 1 April 1968 | 2003 | 2352 | 47202 | 27 (20) |
| Norway | 1 January 1953 | 2005 | 3193 | 74767 | 14 (12) |
| Finland | 1 January 1969 | 1994 | 1049 | 16302 | 1 (1) |
| Israel | 1 January 1968 | 1998 | 704 | 12887 | 6 (6) |
| Total | 7298 | 151158 | 48 (39) |
*Figures in brackets refer to number of bladder cancer diagnoses in subjects with at least 15 years after first polycyclic aromatic hydrocarbon exposure in asphalt paving.