Table 3.
Observed and fitteda cancers of the salivary gland by dose category
| Dose (Gy) | People | Person yearsb | Cases | Backgroundc | Radiationb |
|---|---|---|---|---|---|
|
| |||||
| < 0.005 | 59,840 | 1,755,781 | 22 | 21.8 | 0.0 |
| − 0.1 | 27,203 | 798,493 | 12 | 9.7 | 1.1 |
| −0.2 | 5,690 | 166,140 | 3 | 2.1 | 1.0 |
| − 0.5 | 6,131 | 176,597 | 6 | 2.2 | 2.4 |
| − 1 | 3,574 | 101,067 | 1 | 1.2 | 2.6 |
| − 2 | 2,038 | 56,432 | 4 | 0.7 | 2.9 |
| 2+ | 968 | 24,991 | 2 | 0.3 | 1.9 |
|
| |||||
| Total | 105,444 | 3,079,502 | 50 | 38.0 | 12.0 |
a
Fitted cases were based on the recommended model for the salivary gland cancer.
b
The person-years and fitted cases showed were rounded; the sum of the numeric totals does not necessarily equal the total in lowest row.
c
Background cases are estimates of the expected number of cases among cohort members with no radiation exposure.