000000758 001__ 758 000000758 005__ 20251210105403.0 000000758 0247_ $$2DOI$$a10.6083/M4NV9G7P 000000758 037__ $$aETD 000000758 245__ $$aCohort analysis using the multiphase method: application to Oregon viral hepatitis mortality 1995-2010 000000758 260__ $$bOregon Health and Science University 000000758 269__ $$a2012 000000758 336__ $$aThesis 000000758 502__ $$bM.P.H. 000000758 502__ $$gEpidemiology 000000758 502__ $$gBiostatistics 000000758 520__ $$aAge, period, and cohort (APC) analysis helps uncover temporal influences on disease trends beyond simple rates. This study applied the multiphase APC method to Oregon viral hepatitis mortality data (1995–2010) to assess cohort effects among individuals born 1950–1965. Deaths were identified using ICD-9/10 codes and analyzed through graphical inspection, median polish, and regression modeling. Results showed significantly higher mortality for the 1950–1965 cohort compared to earlier (p=0.03) and later cohorts (p=0.003), with no significant period effects. Findings highlight a clear generational pattern, informing surveillance and public health planning for viral hepatitis. 000000758 540__ $$fCC BY 000000758 542__ $$fIn copyright - single owner 000000758 650__ $$aEpidemiology$$018518 000000758 650__ $$aMortality$$022435 000000758 650__ $$aHepatitis$$020108 000000758 650__ $$aCohort Effect$$028797 000000758 650__ $$aResearch$$025336 000000758 650__ $$aEpidemiologic Methods$$018517 000000758 650__ $$aHealth Planning$$019892 000000758 650__ $$aHepatitis, Viral, Human$$020127 000000758 650__ $$aModels, Statistical$$028242 000000758 650__ $$aHuman 000000758 651__ $$aOregon$$041094 000000758 651__ $$aOregon$$041094 000000758 6531_ $$acohort analysis 000000758 6531_ $$amedical statistics 000000758 691__ $$aSchool of Medicine$$041369 000000758 692__ $$aDepartment of Public Health and Preventive Medicine$$041444 000000758 7001_ $$aElman, Miriam$$uOregon Health and Science University$$041354 000000758 7201_ $$aLapidus, Jodi$$uOregon Health and Science University$$041354$$7Personal$$eAdvisor$$eMentor 000000758 8564_ $$98ca2a276-d67c-411b-9819-3277d7a4db21$$s1106071$$uhttps://digitalcollections.ohsu.edu/record/758/files/761_etd.pdf$$ePublic$$2678e292f3eeb929460a7947569deaea1$$31 000000758 905__ $$a/rest/prod/h9/89/r3/23/h989r323x 000000758 909CO $$ooai:digitalcollections.ohsu.edu:758$$pstudent-work 000000758 980__ $$aTheses and Dissertations