dc.contributor.author |
Liyanage, Achala |
|
dc.contributor.author |
Liyanage, P. L. G. C. |
|
dc.contributor.author |
De Silva, V. |
|
dc.contributor.author |
Akarawita, J. |
|
dc.contributor.author |
Imafuku, S. |
|
dc.contributor.author |
Lekamwasam, S. |
|
dc.date.accessioned |
2023-08-31T06:51:11Z |
|
dc.date.available |
2023-08-31T06:51:11Z |
|
dc.date.issued |
2021-03-06 |
|
dc.identifier.citation |
TY - JOUR AU - Liyanage, Achala AU - Liyanage, G. AU - De Silva, V. AU - Akarawita, J. AU - Gunasekera, C. AU - Imafuku, S. AU - Lekamwasam, S. PY - 2022 DA - 2022/01/01 TI - Validation of psoriasis disability index (PDI) questionnaire Sinhala version JO - Archives of Dermatological Research SP - 61 EP - 69 VL - 314 IS - 1 AB - Psoriasis is a chronic inflammatory dermatosis with significant physical and psychological impact leading to negative influence on the quality of life among patients with psoriasis. Other than the disease characteristics many external factors could operate in South Asian context. Lack of a reliable disease-specific instrument prevents objective estimation and monitoring of disability in patients with psoriasis and hence we aim to validate assess the psychometric properties of the Sinhala version of PDI. SN - 1432-069X UR - https://doi.org/10.1007/s00403-021-02210-5 DO - 10.1007/s00403-021-02210-5 ID - Liyanage2022 ER - |
en_US |
dc.identifier.uri |
http://ir.lib.ruh.ac.lk/xmlui/handle/iruor/14358 |
|
dc.description.abstract |
Introduction/objectives Psoriasis is a chronic inflammatory dermatosis with significant physical and psychological impact
leading to negative influence on the quality of life among patients with psoriasis. Other than the disease characteristics
many external factors could operate in South Asian context. Lack of a reliable disease-specific instrument prevents objec-
tive estimation and monitoring of disability in patients with psoriasis and hence we aim to validate assess the psychometric
properties of the Sinhala version of PDI.
Methods A cross-sectional study conducted at dermatology clinic at a tertiary care National Hospital in Sri Lanka. Patients
with psoriasis and on therapy at least 4 weeks prior to enrollment, aged more than 18 years, were included while those with
already diagnosed psoriatic arthritis and/or nail psoriasis alone without any skin involvement and generalized pustular pso-
riasis de novo were excluded. All patients were examined by dermatologist to obtain disease characteristics. The reliability
was assessed by internal consistency using Cronbach’s α and item-total correlation. Convergent validity was measured with
the known groups.
Results Of 199 patients studied, the PDI Sinhala version showed Cronbach’s α of 0.86 (all 15 items) and ranged from 0.57
to 0.77 for subscales. PDI score and Dermatology Life Quality Index (DLQI) showed good correlation of coefficient 0.76
(p < 0.01). Positive associations were noted with extent and severity of psoriasis when using sample medians (p < 0.05). The
dimensionality of the PDI was determined using exploratory factor analysis and four factors were structured.
Conclusion The PDI Sinhala version is proved to be valid and reliable tool to assess the burden of psoriasis among Sinhala
conversant patients in Sri Lanka |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
Springer Link |
en_US |
dc.subject |
Psoriasis |
en_US |
dc.subject |
Quality of life |
en_US |
dc.subject |
Patient-reported outcomes |
en_US |
dc.subject |
Psoriasis Disability Index |
en_US |
dc.subject |
Validation study |
en_US |
dc.title |
Validation of psoriasis disability index (PDI) questionnaire Sinhala version |
en_US |
dc.type |
Article |
en_US |