Gastroesophageal reflux in cirrhotic patients without esophageal varices

Table 2 Results of ambulatory 24-h esophageal pH monitoring in liver cirrhosis patients and controls (mean ± SD)

Group	Number of acid reflux episodes	Number of acid reflux episodes lasting≥5 min	Mean time pH < 4 (%)
			Total	Upright	Supine
Liver cirrhosis (n = 78)	61.17 ± 33.35a	15.25 ± 5.73a	10.34 ± 4.45a	5.22 ± 2.71a	9.56 ± 3.42a
Child A (n = 28)	51.24 ± 20.54a	10.66 ± 7.28a	8.11 ± 2.32a	4.48 ± 1.76a	7.32 ± 5.44a
Child B (n = 27)	60.35 ± 18.66c	12.35 ± 9.83c	10.51 ± 1.62c	5.64 ± 1.31c	9.14 ± 4.37c
Child C (n = 23)	73.52 ± 28.63e	17.34 ± 12.46e	12.34 ± 2.15e	6.79 ± 1.51e	11.56 ± 5.43e
Child D (n = 30)	39.62 ± 29.32	4.81 ± 2.04	2.35 ± 1.53	3.58 ± 1.34	8.69 ± 3.45

^aCompared with control, P < 0.05;

^cCompared with Child A, P < 0.05;

^eCompared with Child B, P < 0.05.