OCMAP-PLUS - A PROGRAM FOR THE COMPREHENSIVE ANALYSIS OF OCCUPATIONALCOHORT DATA

The Occupational Cohort Mortality Analysis Program (OCMAP) has been re designed for optimal microcomputer use and extended to include new com puting algorithms, The new program OCMAP-PLUS, offers a comprehensive, flexible, and efficient analysis of incidence or mortality rates and standardized measures in relation to multiple and diverse work history and exposure measures. New features include executable code, minimiza tion of memory requirements, disk file storage of person-day arrays, s t ratified analyses by geographic area, employment status and up to ei ght exposure variables, a data imputation algorithm for study members with unknown race, and enhanced algorithms for constructing several ti me-dependent exposure measures, New modules create grouped data files for Poisson and logistic regression and risk set files for use in rela tive risk regression analysis. The Mortality and Population Data Syste m (MPDS) Provides external comparison rates and proportional mortaliti es. Analysis from two recent cohort mortality studies illustrate sever al new features.