The levels of bilirubin during phototherapy ( -LSB- @th hour ; @ -LCB- @-@ @ -RCB- vs. @ -LCB- @-@ @ -RCB- , p : @ -RSB- ; -LSB- @th hour ; @ -LCB- @-@ @ -RCB- vs. @ -LCB- @-@ @ -RCB- , p : @ -RSB- ; -LSB- @nd hour ; @ -LCB- @-@ @ -RCB- vs. @ -LCB- @-@ @ -RCB- , p : @ -RSB- ; -LSB- @th hour ; @ -LCB- @-@ @ -RCB- vs. @ -LCB- @-@ @ -RCB- , p : @ -RSB- ) or the duration of rebound phototherapy ( @ -LSB- @-@ -RSB- vs. @ -LSB- @-@ -RSB- , p : @ ) were lower in the study group than in the controls , but none of the values were statistically significant .