1900
The mean change in HbA1 , adjusted for the initial value , was - 0 . 4 % in the experimental and + 0 . 5 % in the control group ( p less than 0 . 05 ) .
 HbA1
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 HbA1