100 patients ( median age 79 years ) were given anticoagulant therapy ( act ) for a period of time averaging 5 years 3 months ( 522 follow-up years ) . -- out of 3 522 quick tests , converted into prothrombin times and all carried out in the same laboratory , the prothrombin time was at or less than 32 % in 60.5 % , and 34 % in 69.6 % of the tests. -- the mean therapeutic doses were less than 27 % of those for adults , and were decreased by 3 mg of phenindione per year over the age of 75 , only the actively treated cases being retained. -- the risks are the same as those for the middle-aged adult .
C0001675
adults
C0683973
middle-aged adult