Journals
Publish with us
Publishing partnerships
About us
Blog
Pain Research and Management
Journal overview
For authors
For reviewers
For editors
Table of Contents
Special Issues
Pain Research and Management
/
2020
/
Article
/
Tab 2
/
Research Article
Psychometric Properties of the Abdominal Pain Index (API) in the Iranian Adolescent Population
Table 2
Principal component analysis and factor loadings for five API items.
Items
Factor
ā
1
API4: severity
0.927
API5: most severity
0.910
API3: duration
0.786
API2: frequency per day
0.764
API1: frequency
0.709