Efficacy of peritoneal drainage in very-low-birth-weight neonates with Bell’s stage II necrotizing enterocolitis: A single-center retrospective study

Table 2 Comparison of improvement of clinical symptoms

Groups	Fasting time (d)	Abdominal distension relief time (d)	Time for fecal occult blood negative conversion (d)
Conservative treatment	12.36 ± 3.01	7.19 ± 1.88	8.36 ± 1.46
Peritoneal drainage group	7.08 ± 1.72a	4.21 ± 1.10a	4.58 ± 0.97a
Exploratory laparotomy group	7.11 ± 1.60a	3.94 ± 1.07a	5.42 ± 1.13a,b
t value	61.00	54.85	65.84
P value	< 0.001	< 0.001	< 0.001

^aP < 0.05 vs conservative treatment.

^bP < 0.05 vs peritoneal drainage group.