title: Self-reported pediatric measures of physical activity, sedentary behavior, and strength impact for PROMIS: item development.
abstract: BACKGROUND
  Children's activity level is commonly assessed in clinical research, but rigorous assessment tools for children are scarce. Our objectives were to improve pediatric activity self-report measures using qualitative methods to develop item pools that measure these concepts.
  
  
  METHODS
  On the basis of the items generated from our conceptual framework development, we applied cognitive interviews and comprehensibility reviews to ensure children readily understood the items.
  
  
  RESULTS
  Our methods resulted in 129 unique items-physical activities (80 items), sedentary behaviors (23 items), and strengthening activities (26 items)-that were comprehensible to children between the ages of 8 and 18 years. Comprehensibility review resulted in the deletion of 4 items.
  
  
  CONCLUSIONS
  The resultant item pools reflect children's experiences and understanding of the concepts of physical activities, sedentary behaviors, and strengthening activities. The item pools will undergo calibration using item response theory to support computer-adaptive test administration of self- and proxy-reported outcomes.
authors.affiliation: Department of Physical Therapy (Dr Tucker), College of Health Professions and Social Work, Temple University, Philadelphia, Pennsylvania; Department of Pediatrics (Dr Bevans, Ms Teneralli, and Dr Forrest), The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics (Drs Bevans and Forrest), University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania; Division of Cancer Control and Population Sciences (Drs Smith and Bowles), National Cancer Institute, National Institutes of Health, Bethesda, Maryland.
authors.forename: Carole A
authors.initials: CA
authors.lastname: Tucker
authors.forename: Katherine B
authors.initials: KB
authors.lastname: Bevans
authors.forename: Rachel E
authors.initials: RE
authors.lastname: Teneralli
authors.forename: Ashley Wilder
authors.initials: AW
authors.lastname: Smith
authors.forename: Heather R
authors.initials: HR
authors.lastname: Bowles
authors.forename: Christopher B
authors.initials: CB
authors.lastname: Forrest
mesh_terms: D000293:Adolescent; D002648:Child; D015444:Exercise; D005260:Female; D006801:Humans; D007407:Interviews as Topic / Q000592:standards*; D008297:Male; D053580:Muscle Strength; D011594:Psychometrics; D036301:Qualitative Research; D057185:Sedentary Behavior; D057566:Self Report / Q000592:standards*