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These prevalence changes were similar among the total population , across subgroups , and after controlling for covariates . CONCLUSIONSDuring 1999 - 2010 , U . S . prediabetes prevalence increased because of increases in A1C5 . 7 .
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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:
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