Fig. 3

During the first three days of hospitalization, the total cumulative dose of phototherapy administered were assessed. Significance levels were indicated as follows: *P < 0.05, and **P < 0.01 compared to placebo Day 1; #P < 0.05 and ##P < 0.01 compared to placebo Day 2. Phototherapy dose (lamp*hour) = number of lamps × duration of phototherapy