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Correlation between disease severity indices and quality of life measurement tools in atopic dermatitis patients
Gloria Sanclemente1, Natalia Hernández2, Liliana Tamayo3
1Grupo de Investigación Dermatológica, Universidad de Antioquia, Medellín, Colombia y Grupo de Innovación y Desarrollo en Investigación - CIC, Medellin, Colombia; Dermatologia, Hospital San Vicente Fundación-IPS Universitaria, Universidad de Antioquia, Medellín, Colombia.
Introduction:
Reports regarding the correlation and effect size of change of the full spectrum of quality of life and disease severity measures applied in-person to patients with atopic dermatitis are scarce.
Objectives:
To assess quality-of-life with 3 different instruments and to evaluate disease severity indices and to determine their correlation and effect size of change between two measurements.
Materials And Methods:
Patient-level data were obtained through two in-person visits. Sociodemographic information and data related to disease distribution, severity (through the BSA, EASI, SCORAD, POEM, and itching scales), and the impact of atopic dermatitis on quality of life using the DLQI and Skindex-29, and EQ-5D, were assessed. The correlation between change in quality-of-life scores and disease severity scores in addition to the standardized effect size were also evaluated.
Results:
Only 139 out of 212 patients completed the follow-up visit. BSA highly correlated with SCORAD and EASI, and the lowest correlation was found with POEM. The best correlation of pruritus VAS was found with sleep disturbance. The SCORAD score highly correlated with EASI, and the lowest correlation was found with POEM. The magnitude of the effect at initiation of the study vs follow-up was in average moderate to important.
Conclusions:
Patients with atopic dermatitis experience a substantial burden on quality of life. Disease activity correlates better with quality-of-life measurements when the disease is less severe after starting therapy. POEM and Skindex-29 seem to be optimal to determine disease severity and quality of life in adults with atopic dermatitis.
