6051
NTD risks increased for the second and third high levels of the concentrations , with ORs of 2 . 70 ( 95 % CI 1 . 13 - 6 . 43 ) and 18 . 20 ( 95 % CI 5 . 45 - 60 . 73 ) , respectively .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities:  
Answer:
 None