The levels of bilirubin during phototherapy ( [ 24th hour ; 14.1 { 12.8-15 .7 } vs. 13.5 { 12.4-14 .9 } , p : 0.085 ] ; [ 48th hour ; 14.1 { 12-15 .3 } vs. 13.4 { 12.4-14 .5 } , p : 0.41 ] ; [ 72nd hour ; 13.9 { 12.2-15 .6 } vs. 13.5 { 12.5-14 .5 } , p : 0.41 ] ; [ 96th hour ; 14.7 { 11.4-15 .5 } vs. 13.4 { 10.7-14 .1 } , p : 0.24 ] ) or the duration of rebound phototherapy ( 1 [ 1-1 ] vs. 1.5 [ 1-2 ] , p : 0.40 ) were lower in the study group than in the controls , but none of the values were statistically significant .