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Among adults aged >= 18 years , the prevalence increased from 29 . 2 % ( 26 . 8 - 31 . 8 ) to 36 . 2 % ( 34 . 5 - 38 . 0 ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None