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Health Qual Life Outcomes. 2018 Jan 11;16(1):11. doi: 10.1186/s12955-018-0839-5.

Development and evaluation of a measure of patient-reported symptoms of Blepharitis.

Author information

1
InSite Vision, Clinical and Regulatory Affairs, 965 Atlantic Avenue, Alameda, CA, 94501, USA. Hosseini.kamran@gmail.com.
2
UCLA Department of Community Health Sciences, 10833 Le Conte Avenue, 41-230 CHS, Los Angeles, CA, 90095-1772, USA.
3
UCLA Department of Medicine, Division of General Internal Medicine & Health Services Research, 911 Broxton Avenue, Los Angeles, CA, 90024, USA.

Abstract

BACKGROUND:

Blepharitis is an ocular surface disease and chronic ophthalmic condition. This paper reports on the development of psychometric evaluation of a patient-reported measure of blepharitis symptoms.

METHODS:

Self-reports of 13 blepharitis symptoms collected in a Phase 3 multi-site, randomized, double-masked, 4-arm parallel group, clinical trial of 907 individuals with blepharitis (mean age = 62, range: 19-93; 57% female) were analyzed. Symptoms asked about were: eyes that itch; eyes that burn; eyelids feel heavy or puffy; feel like something is in your eye; dry eyes; gritty eyes; irritated eyes; eyes that tear or water; crusty eyes; flaking from your eyelids; eyelids that are stuck together; red eyes or eyelids; and debris like pieces of skin or dandruff in your eyes.

RESULTS:

Categorical factor analyses provided support for two multi-item symptom scales: Irritation (9 items, alpha = 0.88) and Debris (4 items, alpha = 0.85). Spearman-rank order correlations of the Irritation and Debris scales with the Ocular Surface Disease total score were 0.63 and 0.41, respectively (p's < 0.001). Rank-order correlations between ratings of clinicians and self-reports of puffy eyes (r = 0.07, p < .05), red eyes (r = 0.12, p < .001), debris (r = 0.03, p > 0.05), and irritation (r = 0.47, p < .001).

CONCLUSIONS:

This study provides support for the psychometric properties and construct validity of the Irritation and Debris scales for assessing symptoms of blepharitis. The associations between the self-reports and clinician ratings of 4 symptoms indicate substantial unique information in the new self-reported symptom items.

TRIAL REGISTRATION:

The trial was registered at ClinicalTrials.gov under the registry number NCT01408082 .

KEYWORDS:

Blepharitis; Reliability; Symptoms; Validity

PMID:
29325546
PMCID:
PMC5765649
DOI:
10.1186/s12955-018-0839-5
[Indexed for MEDLINE]
Free PMC Article

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