16948
The apparent age - related increase in serum sclerostin levels was faster before the age of 63 than afterwards ( 0 . 43SD vs 0 . 20SD per decade ) .
 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