Table 1.
Descriptive data by follow‐up period, North Carolina asbestos textile cohort
| Follow‐up 1950 to 2003 | Follow‐up 1999 to 2003 | |||
|---|---|---|---|---|
| Mean or n | Range | Mean or n | Range | |
| Workers, n | 5397 | – | 2803 | – |
| Person‐years, n | 172 860 | – | 13 022 | – |
| Mesothelioma deaths a , n | 4 | – | 4 | – |
| Pleural cancer deaths b , n | 4 | – | 0 | – |
| Year of hire | 1960 | 1917‐1973 | 1963 | 1932‐1973 |
| Length of follow‐up, y | 31.4 | 0.1‐54.0 | 39.6 | 25.2‐54.0 |
| Exposure duration, y | 3.5 | <0.1‐47.5 | 2.8 | <0.1‐42.4 |
| Mean exposure, f/mL | 17.8 | 0.1‐248.7 | 13.4 | 0.1‐170.9 |
| Cumulative exposure, f‐y/mL | 79.1 | <0.1‐5677.9 | 35.9 | <0.1‐1271.1 |
| Time since first exposure, y | 31.9 | 0‐72.0 | 39.4 | 26.0‐69.0 |
a
ICD‐10 C45.
b
ICD‐9 163 or 163.9.