2200
The incidence of stroke was 29 % lower ( HR = 0 . 71 , 95 % CI : 0 . 58 - 0 . 87 ) and mortality of stroke was 40 % lower ( HR = 0 . 60 , 95 % CI : 0 . 42 - 0 . 86 ) in the intervention cohort than the control cohort .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Anatomy 
Text: {0} 
Answer:
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