A 34 year old man who survived childhood Hodgkin lymphoma is followed in a survivorship clinic. Investigators study 2,000 adults who received mantle radiation as children and observe 18 thyroid cancers over 10 years. Based on age matched population rates, only 6 cases would have been expected. Which of the following best describes the standardized incidence ratio for thyroid cancer in this cohort?
- A)1.0
- B)3.0GABARITO
- C)0.33
- D)0.67
- E)12.0
Explicação
The standardized incidence ratio equals observed cases divided by expected cases. Here, 18/6 = 3.0, meaning thyroid cancer occurred three times as often as expected in a comparable general population. This measure is commonly used in occupational and survivors... Ver explicação completa e trilha adaptativa →