Clinical Study
Comparisons of Esophageal Function Tests between Chinese and British Patients with Gastroesophageal Reflux Disease
Table 3
Results of stepwise linear regression analysis of different demographic data on items of HRiM and MII/pH in British and Chinese GERD patients.
| | HRiM and MII/pH items | Unstandardized coefficients () | | Constant | Age | Gender | Ethnicity | square |
| | LESP | — | — | — | — | — | | LESL | 2.428 | — | — | 0.266 | 0.071 | | LESRP | — | — | — | — | — | | IRP | 16.775 | — | — | −4.374 | 0.166 | | UESP | 124.142 | −0.654 | — | −27.566 | 0.231 | | DEA | — | — | — | — | — | | DCI | — | — | — | — | — | | Peristalsis | — | — | — | — | — | | TBTT | — | — | — | — | — | | CRTR | — | — | — | — | — | | Demeester | −10.667 | 0.286 | — | 10.366 | 0.090 | | Acid exposure upright | −4.652 | 0.126 | — | 2.989 | 0.086 | | Acid exposure recumbent | 0.037 | 0.058 | — | 3.244 | 0.037 | | Acid exposure total | −3.099 | 0.084 | — | 2.762 | 0.077 | | Bolus exposure upright | 2.197 | — | — | 1.593 | 0.042 | | Bolus exposure recumbent | — | — | — | — | — | | Bolus exposure total | 1.323 | — | — | 1.192 | 0.041 | | Proximal acid | 9.415 | −0.228 | — | 15.800 | 0.278 | | Proximal nonacid | 23.882 | — | −5.456 | — | 0.039 | | Proximal total | 11.390 | — |
−9.528 | 24.536 | 0.349 | | Acid reflux | 16.076 | — | −8.050 | 17.171 | 0.244 | | Nonacid reflux | 11.006 | — | — | 11.714 | 0.050 | | Total reflux | 32.592 | — | −11.691 | 28.912 | 0.206 |
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LESP: lower esophageal sphincter pressure; LESL: length of lower esophageal sphincter; LESRP: lower esophageal sphincter residual pressure; IRP: integrated relaxation pressure; UESP: upper esophageal sphincter pressure; DEA: distal esophageal amplitude; DCI distal contractile integral; TBTT: total bolus transit time; CBTR: complete bolus transit rate. Only data with were expressed as values of beta-coefficients. “—”: .
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