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Table 4 The prevalence and concentrations of pepsin in saliva at different sampling time points for three cohorts

From: The diagnostic value of pepsin detection in saliva for gastro-esophageal reflux disease: a preliminary study from China

Parameters

Morning waking

After lunch

After dinner

P

Control (n = 35)

 Prevalence (%)

17.1

37.1

34.3

0.14

 Concentrations (ng/mL)#

0 (0–0)

0 (0–21)

0 (0–25)

0.095

Non-GERD (n = 128)

 Prevalence (%)

22.7

36.7

37.5

0.017

 Concentrations (ng/mL) #

0 (0–0)

0 (0–31.5)

0 (0–39.5)

0.005

GERD (n = 122)

 Prevalence (%)

37.7

73.8

74.6

<0.001

 Concentrations (ng/mL) #

0 (0–75.3)

103.5 (0–274.8)

92 (0–288.3)

<0.001

  1. GERD gastro-esophageal reflux disease
  2. #presented as median (IQR)