Heparin versus normal saline for the care of peripheral intravenous catheters in pediatrics: a meta-analysis of randomized controlled trials

Table 2 The subgroup analysis on the catheter indwelling time

Variable	Number of included RCTs	Heterogeneity (I²)	Model for meta-analysis	Mean difference	95%CI	P
Neonate	12	95%	Random	9.63	0.38 ~ 18.88	0.042
Children	3	27%	Fixed	6.94	-1.27 ~ 15.15	0.100
Neonate + children	5	20%	Fixed	6.22	2.72 ~ 9.73	< 0.001

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