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Is a Reporting System for Gastritis or Duodenitis (Modified Lanza Scale) Reproducible?

This study has been completed.
Information provided by (Responsible Party):
Fook-Hong Ng, Ruttonjee Hospital Identifier:
First received: February 25, 2009
Last updated: June 5, 2012
Last verified: June 2012

The modified Lanza scale (Lanza FL, 1984) has been widely utilized to grade the degree of gastritis and duodenitis. However, the inter-rater or intra-rater reproducibility of this scale has never been validated. As a quality improvement program, it is important to study the reproducibility of the scale between different operators and the operators himself.

Method: During upper endoscopic examinations, one investigator performed the procedure and the second investigator look at the endoscopic image. The degree of gastritis and duodenitis is graded. The results of the grading are blinded to the other investigator.

The endoscopic video is stored for reassessment to determine the intra-rater reliability. The patient identifier is stored in serial number. The investigator will not retrieve the report of the first assessment during the second assessment.

Condition Phase
Gastritis Duodenitis Phase 4

Study Type: Observational
Study Design: Time Perspective: Prospective
Official Title: Reproducibility of Modified Lanza Scale for the Reporting of Gastritis and Duodenitis

Further study details as provided by Fook-Hong Ng, Ruttonjee Hospital:

Primary Outcome Measures:
  • Kappa coefficient for the intra and inter-rater agreement

Estimated Enrollment: 200
Study Start Date: March 2009
Study Completion Date: December 2011
Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
all patient undergoing upper endoscopy after informed consent is obtained
All patients undergo upper endoscopy are included after written informed consent is obtained
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Please refer to this study by its identifier: NCT00852150

China, Hong Kong
Ruttonjee Hospital
Wan Chai, Hong Kong, China
Ruttonjee Hospital
Hong Kong, China
Sponsors and Collaborators
Ruttonjee Hospital
Principal Investigator: Fook Hong Ng, M.D. Department of Medicine, Ruttonjee Hospital
  More Information

Responsible Party: Fook-Hong Ng, SMO, Ruttonjee Hospital Identifier: NCT00852150     History of Changes
Other Study ID Numbers: HKEC 2008-083
Study First Received: February 25, 2009
Last Updated: June 5, 2012

Keywords provided by Fook-Hong Ng, Ruttonjee Hospital:
inter-rater reliability
intra-rater reliablity

Additional relevant MeSH terms:
Gastrointestinal Diseases
Digestive System Diseases
Stomach Diseases
Duodenal Diseases
Intestinal Diseases processed this record on August 17, 2017