1097
Thrombotic risk was consistently higher for users of aspirin users than nonusers of aspirin ( placebo , 1 . 4 % vs . 0 % ; valdecoxib , 1 . 7 % vs . 0 . 2 % ; NSAIDs , 1 . 9 % vs . 0 . 5 % ) .
 Disease: Thrombotic; Chemical: aspirin; Chemical: aspirin; Chemical: valdecoxib
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Disease: Thrombotic; Chemical: aspirin; Chemical: aspirin; Chemical: valdecoxib