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Table 1 Demographic data and high-resolution manometry and impedance results

From: Comparison of oesophageal function tests between Chinese non-erosive reflux disease and reflux hypersensitivity patients

Items

NERD

RH

Independent-sample t-test or χ 2 test

n = 111

n = 92

Age (mean ± SD, years)

58.8 ± 10.4

51.1 ± 12.8

P < 0.001

Male/Female, n

51/60

44/48

P = 0.789

LESP (mean ± SD, mmHg)

15.3 ± 8.9

19.3 ± 23.3

P = 0.122

LESL (mean ± SD, cm)

3.9 ± 1.6

3.7 ± 0.7

P = 0.343

LESRP (mean ± SD, mmHg)

4.3 ± 4.0

4.6 ± 4.3

P = 0.564

IRP (mean ± SD, mmHg)

7.5 ± 4.8

7.9 ± 5.2

P = 0.485

UESP (mean ± SD, mmHg)

73.2 ± 29.6

82.1 ± 35.9

P = 0.054

DEA (mean ± SD, mmHg)

65.5 ± 36.7

64.0 ± 32.9

P = 0.756

DCI (mean ± SD, mmHg∙s∙cm)

751.9 ± 856.2

661.9 ± 961.7

P = 0.482

Ineffective oesophageal motility n (%)

55(49.5)

38(41.3)

P = 0.241

Fragmented peristalsis %

6(5.4)

9(9.8)

P = 0.235

Total bolus transit time (s)

6.3 ± 1.3

6.5 ± 1.3

P = 0.119

Complete bolus transit rate (%)

76.1 ± 33.0

73.1 ± 32.0

P = 0.224

Hiatus hernia n(%)

10(9.0)

8(8.6)

P = 0.938

  1. NERD non-erosive reflux disease, RH reflux hypersensitivity, LESP lower oesophageal sphincter pressure, LESL length of lower oesophageal sphincter, LESRP lower oesophageal sphincter residual pressure, IRP integrated relaxation pressure, UESP upper oesophageal sphincter pressure, DEA distal oesophageal amplitude, DCI distal contractile integral, SD standard deviation