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Table 4 Comparison of mean phototherapy duration in the experimental and control groups

From: Efficacy of zinc sulfate on indirect hyperbilirubinemia in premature infants admitted to neonatal intensive care unit: a double-blind, randomized clinical trial

Statistical indexMean ± Standard deviation (mg/dL)
Group
Experimental (hour)42.18 ± 8.8
Control (hour)12 ± 48.6
Mann-Whitney test resultP = 0.24; z = 1.17