Number of observed deaths and standardised mortality ratios (SMRs) with 95% confidence intervals for all-cause mortality among all eligible carbon black workers by study period, nationality, and gender
| Nationality | Gender | n | Lost to follow up | deaths | Known cause of death | Exp | Person years | SMR* | 95% CI |
|---|---|---|---|---|---|---|---|---|---|
| *Reference rates from (West) Germany. | |||||||||
| †Due to lack of information on the underlying causes of deaths before 1976, the subsequent analyses are restricted to participants known to be alive at least until 1 January 1976; see Methods section. | |||||||||
| Study period 1960–98 | |||||||||
| German | Men | 1617 | 37 | 396 | 333 | 347.9 | 36071 | 114 | 103–126 |
| Women | 106 | 5 | 17 | 16 | 18.3 | 2957 | 93 | 54–149 | |
| Non-German | Men | 327 | 160 | 14 | 8 | 25.5 | 4308 | 55 | 30–92 |
| Women | 3 | 3 | – | – | 0.01 | 10 | – | – | |
| Traced alive on 1 January 1976† | |||||||||
| German | Men | 1535 | 19 | 332 | 325 | 275.5 | 25759 | 120 | 108–134 |
| Women | 101 | 0 | 17 | 16 | 15.5 | 1966 | 110 | 64–176 | |
| Non-German | Men | 215 | 49 | 13 | 8 | 21.3 | 3135 | 61 | 33–104 |
| Women | 0 | – | – | – | – | – | – | – | |