title: Sampling plan and patient characteristics of the PROMIS pediatrics large-scale survey.
abstract: OBJECTIVE
  This paper describes a large-scale administration of the Patient-Reported Outcomes Measurement Information System (PROMIS) pediatric items to evaluate measurement characteristics.
  
  
  METHODS
  Each child completed one of seven test forms containing items from a pool of 293 PROMIS items and four legacy scales. PROMIS items covered six domains (physical function, emotional distress, social role relationship, fatigue, pain, and asthma).
  
  
  RESULTS
  From January 2007 to May 2008, 4,129 children aged 8-17 were enrolled. The sample was 51% female, 55% aged 8-12, 42% minority race and 17% were Hispanic ethnicity. Approximately, 35% of the children participating in the survey consulted a clinician for a chronic illness diagnosis or treatment within 6 months prior to study enrollment.
  
  
  CONCLUSIONS
  The final PROMIS pediatric item banks include physical function (n = 52 items), emotional distress (n = 35 items), social role relationships (n = 15 items), fatigue (n = 34 items), pain (n = 13 items), and asthma (n = 17 items). The initial calibration data were provided by a diverse set of children with varying health states (e.g., children with a variety of common chronic illnesses) and racial/ethnic backgrounds.
authors.affiliation: Department of Epidemiology, University of North Carolina at Chapel Hill, CB #7294, Chapel Hill, NC 27599, USA. dirwin@email.unc.edu
authors.forename: Debra E
authors.initials: DE
authors.lastname: Irwin
authors.forename: Brian D
authors.initials: BD
authors.lastname: Stucky
authors.forename: David
authors.initials: D
authors.lastname: Thissen
authors.forename: Esi Morgan
authors.initials: EM
authors.lastname: Dewitt
authors.forename: Jin Shei
authors.initials: JS
authors.lastname: Lai
authors.forename: Karin
authors.initials: K
authors.lastname: Yeatts
authors.forename: James W
authors.initials: JW
authors.lastname: Varni
authors.forename: Darren A
authors.initials: DA
authors.lastname: DeWalt
mesh_terms: D000223:Adaptation, Psychological; D000293:Adolescent; D002648:Child; D002908:Chronic Disease; D005260:Female; D017144:Focus Groups; D019538:Health Care Surveys; D006801:Humans; D008297:Male; D010372:Pediatrics; D011594:Psychometrics; D011788:Quality of Life; D018434:Sickness Impact Profile; D013315:Stress, Psychological; D011795:Surveys and Questionnaires