. 2021 May 3;21:201. doi: 10.1186/s12876-021-01707-7

Table 2.

Demographic characteristics of patients with GERD and Controls, endoscopic findings and Acid exposure time in 24 h

	EE	BE	AAE	NAE	Control
n (%)	23 (28.04%)	16 (19.51%)	13 (15.85)	13 (15.85)	17 (20.73)
Age years median(IQ)	50 (34–60)	56 (42.64)	49 (40–54)	31 (25–43)	45 (32–52)
Gender
Female n (%)	12 (52.18)	9 (56.25)	9 (69.24)	10 (76.92)	13 (76.48)
Male N (%)	11 (47.82)	7 (43.75)	4 (30.76)	3 (23.07)	4 (23.52)
Endoscopic Findings n	Esofagitis A–B: 16 C–D: 7	Segment < 3 cm: 10 > 3 cm: 6	Non erosive	Non erosive	Non erosive
Acid exposure time in 24 h median% (IQ)	NA	NA	13.65 (8.55–20.1)	1.0 (0.2–1.6)	0.6 (0–1.1)

AAE

NAE

Control

n (%)

23 (28.04%)

16 (19.51%)

(15.85)

(20.73)

Age years median(IQ)

(34–60)

(42.64)

(40–54)

(25–43)

(32–52)

Gender

Female n (%)

(52.18)

(56.25)

(69.24)

(76.92)

(76.48)

Male N (%)

(47.82)

(43.75)

(30.76)

(23.07)

(23.52)

Endoscopic

Findings

Esofagitis A–B: 16

C–D: 7

Segment

< 3 cm: 10

> 3 cm: 6

Non

erosive

Non

erosive

Non

erosive

Acid exposure time in 24 h median% (IQ)

13.65

(8.55–20.1)

1.0

(0.2–1.6)

0.6

(0–1.1)

EE Esophageal esophagitis, BE Barrett’s esophagus, AAE Abnormal acid exposure, NAE normal acid exposure, F Female, NA not available