Quality of life instrument for Turkish people with skin diseases.
OBJECTIVE
To develop a new, short, self-administrated subjective quality of life (QOL) instrument for Turkish people with skin diseases.


METHODS
The 11-item questionnaire of QOL instrument was developed from 200 consecutive dermatological patients' replies. The reliability and validity of the instrument was tested on data gathered from 278 patients with skin diseases attending a dermatology outpatient department and 49 normal subjects. Construct validity was assessed by an exploratory factor analyses and comparisons between patients rated severe and not severe, as well as between normal and patient groups. Reliability was assessed from the internal consistency of the scales and the correlations were made between scores from a 7-10-day retest by using intraclass correlation coefficient.


RESULTS
Factor analyses found six separate dimensions of QOL involving skin disease: social life, emotional life, daily activity, symptoms, cognitive life and sexual life. In addition, 81.3% of common variance was explained by the above factors, all of which correlated with the scale scores of the instrument. The instrument scales were internally consistent (Cronbach's alpha= 0.77-0.84) and scale scores were reproducible after 7-10 days (ICC = 0.63-0.88). Significantly, correlations between scale scores and physician's assessment of the severity of the skin disease were found. Significant differences between diagnostic groups were observed with higher scores for patients with psoriasis, urticaria and acne than those with eczema in the emotional life domain (P < 0.05). In the sexual life domain, however, the eczema group had higher scores than patients with psoriasis, urticaria or acne (P < 0.01).


CONCLUSIONS
The instrument provides valid and reliable assessments of QOL in Turkish patients with skin disease.
Gurel
Mehmet Salih
MS
Department of Dermatology Psychiatry and Public Health Medical Faculty of Harran University, Sanliurfa, Turkey. gurelm@bigfoot.com
Yanik
Medaim
M
Simsek
Zeynep
Z
Kati
Mahmut
M
Karaman
Ahmet
A
D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D015994:Incidence; D007398:Interpersonal Relations; D008297:Male; D008875:Middle Aged; D011336:Probability; D011788:Quality of Life; D012016:Reference Values; D015203:Reproducibility of Results; D018570:Risk Assessment; D012649:Self Concept; D012720:Severity of Illness Index; D017678:Sex Distribution; D018434:Sickness Impact Profile; D012871:Skin Diseases / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology*; D013315:Stress, Psychological; D011795:Surveys and Questionnaires; D014421:Turkey / Q000453:epidemiology