Fig 2.

Risk of stomach cancer after Hodgkin lymphoma in relation to radiation dose to stomach and procarbazine dose. OR, odds ratio. (*) Radiation dose was estimated to stomach tumor location (matched location for controls). (†) Assuming procarbazine dose of 1,400 mg/m² per cycle (14 days × 100 mg/m² per day), categories correspond to zero, one to three, four to five, and ≥ six cycles of MOPP (mechlorethamine, vincristine, procarbazine, and prednisone) or MOPP-like regimens. Other protocols (eg, MOPP-ABV [MOPP–doxorubicin, bleomycin, and vinblastine], BEACOPP [bleomycin, etoposide, doxorubicin, cyclophosphamide, vincristine, procarbazine, and prednisone]) include procarbazine dose of 700 mg/m² per cycle. (‡) ORs and 95% CIs were adjusted for receipt of any dacarbazine and unknown radiation dose.