title: The economic impact of high-need psoriasis in daily clinical practice before and after the introduction of biologics.
abstract: BACKGROUND
  Although costs of biologics are high, effective treatment of patients with psoriasis may reduce the total health care costs, as it may limit the need for hospitalization.
  
  
  OBJECTIVE
  To investigate the economic impact of psoriasis, including direct costs, before and after the introduction of biologics, with special focus on hospitalized patients, treatment effectiveness and patient satisfaction with medication.
  
  
  METHODS
  A descriptive retrospective cohort study including 67 patients with high-need psoriasis was done. Direct costs were investigated for the biologic and pre-biologic period. Direct costs for a subgroup of hospitalized patients were analysed separately. Patient satisfaction with biologic treatment was measured using the Treatment Satisfaction Questionnaire for Medication (TSQM) version II. Effectiveness of biologic therapy was investigated by means of the Psoriasis Area and Severity Index (PASI).
  
  
  RESULTS
  Mean total direct costs were €10,146 per patient per year (PPPY) in the pre-biologic treatment period, compared with €17,712 PPPY in the biologic treatment period. For six patients in the cohort, introduction of biologics led to a reduction of direct costs, as these patients did not need long hospitalizations. Treatment with biologics led to a decrease in PASI from 19·0 at the start of biologic therapy to 6·4 at analysis (66·4%). Patient satisfaction with biologics was high, indicated by a mean TSQM score of 77·8.
  
  
  CONCLUSIONS
  Introduction of biologic therapies may have cost-neutral or cost-saving effects for patients who otherwise require long hospitalization periods. Treatment with biologics proved effective and was accompanied by high satisfaction for the patients.
authors.affiliation: Department of Dermatology, Radboud University Nijmegen Medical Centre, P.O. Box 9101, 6525 GL Nijmegen, the Netherlands. R.Driessen@derma.umcn.nl
authors.forename: R J B
authors.initials: RJ
authors.lastname: Driessen
authors.forename: L A
authors.initials: LA
authors.lastname: Bisschops
authors.forename: E M M
authors.initials: EM
authors.lastname: Adang
authors.forename: A W
authors.initials: AW
authors.lastname: Evers
authors.forename: P C M
authors.initials: PC
authors.lastname: Van De Kerkhof
authors.forename: E M G J
authors.initials: EM
authors.lastname: De Jong
mesh_terms: D000328:Adult; D000368:Aged; D001688:Biological Products / Q000191:economics* / Q000627:therapeutic use; D015331:Cohort Studies; D005260:Female; D017048:Health Care Costs; D006801:Humans; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011565:Psoriasis / Q000191:economics* / Q000628:therapy*; D012189:Retrospective Studies; D011795:Surveys and Questionnaires; D055815:Young Adult
chemical_list: D001688:Biological Products