20945
Clusters of high ( Z ( G ) > 1 . 96 ) and low ( Z ( G ) < - 1 . 96 ) prevalence rates of chronic polypharmacy were found and were not influenced by age .
 None
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