title: A Canadian self-administered online survey to evaluate the impact of moderate-to-severe psoriasis among patients.
abstract: BACKGROUND
  Few population studies of individuals living with psoriasis have been performed in Canada.
  
  
  OBJECTIVE
  The objective of this survey was to understand the severity and impact of psoriasis on the lives of Canadian patients.
  
  
  METHODS
  An online survey was conducted using a consumer panel. Eligible subjects reported a diagnosis of psoriasis and provided a self-reported level of severity. In addition, subjects had to either (a) have psoriasis covering at least 3% of their body surface area; (b) have psoriasis on a sensitive area of the body; or (c) be currently undergoing treatment for their psoriasis with systemic medication and/or phototherapy.
  
  
  RESULTS
  A total of 514 panelists met the inclusion criteria and completed the survey. Current moderate, severe, or very severe psoriasis was reported by 65% of respondents. Nearly all subjects (96%) had psoriasis affecting a sensitive area of the body. At the time of the survey, 18% were taking systemic medication and/or phototherapy. Comorbidities, such as obesity and high blood pressure, were highly prevalent, with 75% of respondents reporting at least one other diagnosis. Data from the SF-8 and Dermatology Life Quality Index instruments indicated that psoriasis negatively impacted quality of life.
  
  
  CONCLUSIONS
  Moderate-to-severe psoriasis places a burden on Canadian patients, some of whom may be receiving suboptimal treatment or treatment not appropriate for the severity of their condition.
authors.affiliation: Stratica Medical, Edmonton, AB, Canada. nwasel@shaw.ca
authors.forename: Norman
authors.initials: N
authors.lastname: Wasel
authors.forename: Yves
authors.initials: Y
authors.lastname: Poulin
authors.forename: Robin
authors.initials: R
authors.lastname: Andrew
authors.forename: Daphne
authors.initials: D
authors.lastname: Chan
authors.forename: Elisa
authors.initials: E
authors.lastname: Fraquelli
authors.forename: Kim
authors.initials: K
authors.lastname: Papp
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002170:Canada / Q000453:epidemiology; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D020407:Internet; D008297:Male; D008875:Middle Aged; D011565:Psoriasis / Q000453:epidemiology*; D011788:Quality of Life; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires