title: Summaries for patients. What is the appropriate level of blood-thinning medication for elderly people with atrial fibrillation?
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D000925:Anticoagulants / Q000009:adverse effects*; D001281:Atrial Fibrillation / Q000188:drug therapy*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D019934:International Normalized Ratio; D020300:Intracranial Hemorrhages / Q000139:chemically induced*; D008297:Male; D012307:Risk Factors; D014859:Warfarin / Q000009:adverse effects*
chemical_list: D000925:Anticoagulants; D014859:Warfarin