Student or educator? Sign up with your school email and get 6 months of Pro free.
Cited by 898

The DOI matches its Crossref record; 2 of the 2 references it cites were found in a registry or an index.

Psychometric and Clinimetric Validity of the 20‐Item Sino‐Nasal Outcome Test (Snot‐20)

Piccirillo, Jay F., Merritt, Michael G., Richards, Michele L.·2002·Otolaryngology–Head and Neck Surgery

Abstract

A valid measure of rhinosinusitis health status and quality of life is required for the complete assessment of treatment effectiveness. The purpose of this study was to analyze the psychometric and clinimetric validity of the 20‐Item Sino‐Nasal Outcome Test (SNOT‐20), a disease‐specific, health‐related quality‐of‐life measure for rhinosinusitis. The SNOT‐20 is a modification of the 31‐Item Rhinosinusitis Outcome Measure, and it contains 20 nose, sinus, and general items. To complete the instrument, patients indicate how much they are affected in each area and identify the 5 most important items. The SNOT‐20 was completed by 102, 72, and 46 patients at the initial visit and at 6 months and 1 year after treatment commencement, respectively. Cronbach's α was 0.9; test‐retest scores were highly correlated (r = 0.9). Patients who were more affected had greater SNOT‐20 scores (P < 0.002), and patients who had improved had greater change scores (P < 0.04). Items identified as important had greater scores (P < 0.0001) and showed greater change scores (P < 0.0002). The SNOT‐20 is a valid outcome measure for patients with rhinosinusitis; it describes the health burden and is sensitive to clinical change.

Overview

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1067/mhn.2002.121022

Cites

2 of 2 references verified0 citation errors · 0 not checkable

Statistics

Verification

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Citations

Cited by

See all 898

Metadata

Authors
Piccirillo, J. F., Merritt, M. G., & Richards, M. L.
Venue
Otolaryngology–Head and Neck Surgery
Publisher
Wiley
Published
2002-01
Volume
126
Issue
1
Pages
41-47
ISSN
  • 0161-6439 (ISSN-L)
  • 0194-5998
  • 1097-6817
OpenAlex
W2094866624
Cited by
898
References
2
FWCI
11.15
Type
journal article
Language
en
Open access
closed

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review

How to cite

Cite CoChat for the checks on this page, and the paper for its own findings.

This page
CoChat. (2026). Citation check: Psychometric and Clinimetric Validity of the 20‐Item Sino‐Nasal Outcome Test (Snot‐20). https://app.cochat.ai/papers/10.1067/mhn.2002.121022
The paper
Piccirillo, J. F., Merritt, M. G., & Richards, M. L. (2002). Psychometric and Clinimetric Validity of the 20‐Item Sino‐Nasal Outcome Test (Snot‐20). Otolaryngology–Head and Neck Surgery. https://doi.org/10.1067/mhn.2002.121022

Data sources

Bibliographic data: Semantic Scholar, OpenAlex, Crossref.

Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.