9007
Prepregnancy BMI was 33 . 5 kg / m ( 2 ) ( 30 - 53 kg / m ( 2 ) ) vs . 36 . 8 kg / m ( 2 ) ( 30 - 48 kg / m ( 2 ) ) , P = 0 . 037 , and median HbA1c was 6 . 7 % at first visit in both groups and decreased to 5 . 7 and 6 . 0 % , P = 0 . 620 , in late pregnancy , respectively .
 None
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 None