The percentage of crying infants in the LBP group was significantly higher than that in the HBP and BF groups during the evening at 6 weeks ( 88.2 % vs. 56.3 % and 55.6 % , p < 0.05 ) and during the afternoon at 12 weeks ( 91.7 % vs. 50.0 % and 40 % , p < 0.05 ) .