Standardised incidence ratios (SIRs) of cancers in male FDNY and CFHS firefighters versus US males,24 11 September 2001–31 December 2016
| Site | FDNY case count | FDNY SIR | 95% CI | CFHS case count | CFHS SIR | 95% CI |
| All-cancer sites* | 915 | 1.15 | 1.08 to 1.23 | 1002 | 1.05 | 0.98 to 1.12 |
| Prostate | 332 | 1.70 | 1.53 to 1.88 | 358 | 1.22 | 1.11 to 1.35 |
| Lung | 44 | 0.53 | 0.39 to 0.72 | 83 | 0.71 | 0.57 to 0.89 |
| Kidney | 39 | 0.93 | 0.67 to 1.28 | 55 | 1.19 | 0.90 to 1.56 |
| Non-Hodgkin lymphoma | 55 | 1.39 | 1.06 to 1.83 | 43 | 1.04 | 0.77 to 1.41 |
| Melanoma (skin) | 96 | 1.59 | 1.30 to 1.96 | 70 | 1.39 | 1.07 to 1.79 |
| Thyroid | 46 | 2.37 | 1.78 to 3.17 | 15 | 1.01 | 0.61 to 1.67 |
*All malignant cancers (multiple primaries), and in situ bladder cancers.
CFHS, Career Firefighter Health Study; FDNY, Fire Department of the City of New York.