2503
The use of thiopentone was significantly associated with an eight - fold - higher risk for delirium compared to propofol ( 57 . 1 % vs . 7 . 1 % , RR = 8 . 0 , X2 = 4 . 256 ; df = 1 ; 0 . 05 < p < 0 . 02 ) .
 Chemical: thiopentone; Disease: delirium; Chemical: propofol
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:
 Chemical: thiopentone; Disease: delirium; Chemical: propofol