a decreasing trendP < .01
Lactoferrin could shorten time to reach full enteral feeding (weighted mean difference [WMD] = −2.11, 95% CI −3.12 to −1.10; P < .01) and showed a decreasing trend of duration of hospitalization (WMD = −1.69, 95% CI −6.87 to 3.50; P < .01; I = 95%).