Correlation between severity of endoscopic findings and apnea-hypopnea index in patients with gastroesophageal reflux disease and obstructive sleep apnea

Table 2 Comparison of clinical data between A and B group.

Variable	"A" group (AHI ≤30)	"B" group (AHI>30)	Total	P1
Number of cases	27	30	57	-
Age (yr)	51 (41-54)1, 2	53.5 (48-59.5)	52 (44.5-57.5)	0.07
Gender (women, %)	37	16	26	0.13
BMI	31.2 (27.1-34.3)	36.4 (32.3-41.9)	33.8 (28.6-38.0)	0.0002
AHI	10.1 (7-21)	56.7 (38.3-88.0)	35 (10.6-60)	<0.0001
GER-related symptoms +(%)	52	47	49.5	0.79
GERD endoscopic findings (%)	0:33	0:07	0:19	<0.0001
	1:33	1:13	1:23
	2:34	2:37	2:35
	3:00	3:23	3:12
	4:00	4:20	4:11

¹Non-parametric t-test (Mann-Whitney), χ² -test, endoscopic findings: χ²-test for trend

^{1, 2}median (interquartile range).