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
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 Ruttonjee Hospital:

Primary Outcome Measures:
  • Kappa coefficient for the intra and inter-rater agreement [ Designated as safety issue: No ]

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
Genders Eligible for Study:   Both
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
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

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
Health Authority: Hong Kong: Ethics Committee

Keywords provided by Ruttonjee Hospital:
inter-rater reliability
intra-rater reliablity

Additional relevant MeSH terms:
Digestive System Diseases
Duodenal Diseases
Gastrointestinal Diseases
Intestinal Diseases
Stomach Diseases processed this record on May 03, 2016