eprintid: 10024666 rev_number: 24 eprint_status: archive userid: 608 dir: disk0/10/02/46/66 datestamp: 2017-11-06 15:48:30 lastmod: 2021-12-23 23:08:42 status_changed: 2017-11-06 15:48:30 type: article metadata_visibility: show creators_name: Walburn, J creators_name: Sarkany, R creators_name: Norton, S creators_name: Foster, L creators_name: Morgan, M creators_name: Sainsbury, K creators_name: Araújo-Soares, V creators_name: Anderson, R creators_name: Garrood, I creators_name: Heydenreich, J creators_name: Sniehotta, FF creators_name: Vieira, R creators_name: Wulf, HC creators_name: Weinman, J title: An investigation of the predictors of photoprotection and UVR dose to the face in patients with XP: a protocol using observational mixed methods ispublished: pub divisions: UCL divisions: B02 divisions: C07 divisions: D79 keywords: Xeroderma pigmentosum, adherence, dosimeter, mixed methods, photoprotection, rare conditions note: This is an Open Access article distributed in accordance with the terms of the Creative Commons Attribution (CC BY 4.0) license, which permits others to distribute, remix, adapt and build upon this work, for commercial use, provided the original work is properly cited. See: http://creativecommons.org/ licenses/by/4.0/ © Article author(s) (or their employer(s) unless otherwise stated in the text of the article) 2017. All rights reserved. No commercial use is permitted unless otherwise expressly granted. abstract: INTRODUCTION: Xeroderma pigmentosum (XP) is a rare genetic condition caused by defective nucleotide excision repair and characterised by skin cancer, ocular and neurological involvement. Stringent ultraviolet protection is the only way to prevent skin cancer. Despite the risks, some patients' photoprotection is poor, with a potentially devastating impact on their prognosis. The aim of this research is to identify disease-specific and psychosocial predictors of photoprotection behaviour and ultraviolet radiation (UVR) dose to the face. METHODS AND ANALYSIS: Mixed methods research based on 45 UK patients will involve qualitative interviews to identify individuals' experience of XP and the influences on their photoprotection behaviours and a cross-sectional quantitative survey to assess biopsychosocial correlates of these behaviours at baseline. This will be followed by objective measurement of UVR exposure for 21 days by wrist-worn dosimeter and daily recording of photoprotection behaviours and psychological variables for up to 50 days in the summer months. This novel methodology will enable UVR dose reaching the face to be calculated and analysed as a clinically relevant endpoint. A range of qualitative and quantitative analytical approaches will be used, reflecting the mixed methods (eg, cross-sectional qualitative interviews, n-of-1 studies). Framework analysis will be used to analyse the qualitative interviews; mixed-effects longitudinal models will be used to examine the association of clinical and psychosocial factors with the average daily UVR dose; dynamic logistic regression models will be used to investigate participant-specific psychosocial factors associated with photoprotection behaviours. ETHICS AND DISSEMINATION: This research has been approved by Camden and King's Cross Research Ethics Committee 15/LO/1395. The findings will be published in peer-reviewed journals and presented at national and international scientific conferences. date: 2017-08-01 date_type: published official_url: http://doi.org/10.1136/bmjopen-2017-018364 oa_status: green full_text_type: pub language: eng primo: open primo_central: open_green article_type_text: Journal Article verified: verified_manual elements_id: 1435641 doi: 10.1136/bmjopen-2017-018364 pii: bmjopen-2017-018364 lyricists_name: Anderson, Rebecca lyricists_id: RJAND16 actors_name: Anderson, Rebecca actors_name: Laslett, David actors_id: RJAND16 actors_id: DLASL34 actors_role: owner actors_role: impersonator full_text_status: public publication: BMJ Open volume: 7 number: 8 article_number: e018364 event_location: England issn: 2044-6055 citation: Walburn, J; Sarkany, R; Norton, S; Foster, L; Morgan, M; Sainsbury, K; Araújo-Soares, V; ... Weinman, J; + view all <#> Walburn, J; Sarkany, R; Norton, S; Foster, L; Morgan, M; Sainsbury, K; Araújo-Soares, V; Anderson, R; Garrood, I; Heydenreich, J; Sniehotta, FF; Vieira, R; Wulf, HC; Weinman, J; - view fewer <#> (2017) An investigation of the predictors of photoprotection and UVR dose to the face in patients with XP: a protocol using observational mixed methods. BMJ Open , 7 (8) , Article e018364. 10.1136/bmjopen-2017-018364 <https://doi.org/10.1136/bmjopen-2017-018364>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/10024666/1/Anderson_e018364.full.pdf