Is a Reporting System for Gastritis or Duodenitis (Modified Lanza Scale) Reproducible?
Is a Reporting System for Gastritis or Duodenitis (Modified Lanza Scale) Reproducible?
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.
All patients undergo upper endoscopy are included after written informed consent is
 obtained