Table 5.

Results of Meta-analysis of hospitalization days

Study	| SMD	[95% Conf. Interval]		% Weight
Shen (2011) [18]	| -1.600	−2.871	−0.329	60.15
Cies (2013) [21]	| -3.000	−6.131	0.131	9.92
Dager (2014)	| -2.700	−4.502	−0.898	29.93
I-V pooled WMD	| -2.068	−3.054	−1.082	100.00

Heterogeneity chi-squared = 1.33 (d.f. = 2) p = 0.513.

I-squared (variation in WMD attributable to heterogeneity) = 0.0%.

Test of WMD = 0: z = 4.11 p = 0.000.

The significance level of the combined effect quantity test: 0.05.

The significance level of the heterogeneity test: 0.1.

Heterogeneity test: p > 0.1, no heterogeneity was considered; p < 0.1, heterogeneity was considered.