"",1 "",PLCO USER GUIDE TABLE OF CONTENTS, 1. Introduction ....................................................................................................................................................... 2, 2. General Data Use ................................................................................................................................................ 2, Missing Codes..................................................................................................................................................... 2, Questionnaire Follow-up Eligibility ...................................................................................................................... 2, Merging Data Across Files ................................................................................................................................... 3, 3. Time and Events ................................................................................................................................................. 3, "Dates and Days (Entry, Exit, And End of Follow-up) ............................................................................................. 3", Cancer Ascertainment ........................................................................................................................................ 4, "Stage, ICD-O-2 Codes and Other Cancer Characteristics ...................................................................................... 4", Diagnostic Procedures and Treatment ................................................................................................................ 4, Mortality ............................................................................................................................................................ 5, Deaths From Cancer Without a Confirmed Diagnosis .......................................................................................... 5, Extended Follow-up ............................................................................................................................................ 5, 4. Protocol Changes ................................................................................................................................................ 5, Prior Screening Examinations .............................................................................................................................. 5, Dual Consent ...................................................................................................................................................... 6, Age Range .......................................................................................................................................................... 6, Women without Ovaries ..................................................................................................................................... 6, Screening Changes.............................................................................................................................................. 6, "CA-125 Assays, Versions 1 and 2 ......................................................................................................................... 7", Brooklyn and Alabama ........................................................................................................................................ 7, 5. Cancer Site Specific Considerations ..................................................................................................................... 7, Lung ................................................................................................................................................................... 7, Colorectal and Colorectal Adenoma .................................................................................................................... 8, Ovarian .............................................................................................................................................................. 8, Female Breast..................................................................................................................................................... 9, Glioma ............................................................................................................................................................... 9, Head and Neck ................................................................................................................................................... 9, Hematopoietic .................................................................................................................................................. 10, Pancreas ........................................................................................................................................................... 10, Upper Gastrointestinal ..................................................................................................................................... 10, 6. Other Considerations ........................................................................................................................................ 10, Baseline Questionnaire (BQ) ............................................................................................................................. 10, Quality Assurance (QA) Exams .......................................................................................................................... 10, Second Same Site Primary ................................................................................................................................ 10, Menopause Status ............................................................................................................................................ 11, 7. Acronym Glossary ............................................................................................................................................. 11,