Effects of oral rehydration solution-based prophylactic sodium supplementation on clinical outcomes in pediatric pneumonia: A randomized controlled trial

Table 7 Mediation analysis for hospital stay to assess the direct effect of oral rehydration solution

The outcome is an improvement in hospital length of stay
Estimate	Std. Error	Z value	aP value	95%CI lower level	95%CI upper level
A: Direct effect of Na supplementation
-3.3	0.54	-6	< 0.001a	-4.4	-2.2
B: Indirect effect: In the presence of mediators
Mediator 1: Respiratory score on day 4
0.423	0.224	-1.8	0.059	-0.86	0.015
Mediator 2: Fasting time
-1.2	0.516	-2.4	0.014a	-2.28	0.26
C: Total effect: Direct + indirect
-5.02	0.792	-6.3	< 0.001a	-6.5	-3.4

^aP values less than 0.05 were considered significant.