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Across 1. Location of famous cohort study 4. A common bias in case control studies 7. A data source 9. Another term for longitudinal 10. A national survey 11. Those without the risk factor 12. A type of bias that can be controlled 13. A study that can determine temporal direction 15. New cases of a disease 21. Best design for rare diseases 23. Great for prevalence data 25. Survivors of atom bomb is an example 26. A type of bias that lead time of DZ can affect 27. A type of bias that results from chance

Down 2. A type of matching 3. A type of bias that can dilute or strengthen an association 5. A con of cohort studies 6. A common bias in cross sectional studies 8. A pro of case control studies 14. Can also be considered nonconcurrent 16. Comes before the disease in a cohort study 17. Someone who has the disease 18. A type of cohort study 19. A purpose for cohort study 20. Existing cases of a disease 22. A way to even the playing field 24. Someone without the disease