Item Group
Inclusion and exclusion criteria
C1512693 (UMLS CUI [1,1])
C0680251 (UMLS CUI [1,2])
Cancer cases comprised the following ICD codes: oral cavity (C02.0-C02.9, C03.0-C03.9, C04.0-C04.9, C05.0-C06.9), oropharynx (C01.9, C02.4, C09.0-C10.9), hypopharynx (C13.0-C13.9), overlapping (C14 and combination of other sites), and 25 oral or pharyngeal cases with unknown ICD code (other). Controls: cancer-free controls.
Item
Cancer cases comprised the following ICD codes: oral cavity (C02.0-C02.9, C03.0-C03.9, C04.0-C04.9, C05.0-C06.9), oropharynx (C01.9, C02.4, C09.0-C10.9), hypopharynx (C13.0-C13.9), overlapping (C14 and combination of other sites), and 25 oral or pharyngeal cases with unknown ICD code (other). Controls: cancer-free controls.
boolean
C0006826 (UMLS CUI [1,1])
C0868928 (UMLS CUI [1,2])
C2598420 (UMLS CUI [1,3])