passages.id: split_5_test_2778_passage
passages.type: progene_text
passages.text: The frequency of apo E4 allele ( epsilon 4 ) was significantly higher and the frequency of epsilon 2 allele was lower in AD group , compared with those in the control group ( 0.2333 vs 0.0666 , 0.0467 vs 0.0833 , P < 0.05 ) .