title: Development and validation of the short-form Adolescent Health Promotion Scale.
abstract: BACKGROUND
  Health-promoting lifestyle choices of adolescents are closely related to current and subsequent health status. However, parsimonious yet reliable and valid screening tools are scarce. The original 40-item adolescent health promotion (AHP) scale was developed by our research team and has been applied to measure adolescent health-promoting behaviors worldwide. The aim of our study was to examine the psychometric properties of a newly developed short-form version of the AHP (AHP-SF) including tests of its reliability and validity.
  
  
  METHODS
  The study was conducted in nine middle and high schools in southern Taiwan. Participants were 814 adolescents randomly divided into two subgroups with equal size and homogeneity of baseline characteristics. The first subsample (calibration sample) was used to modify and shorten the factorial model while the second subsample (validation sample) was utilized to validate the result obtained from the first one. The psychometric testing of the AHP-SF included internal reliability of McDonald's omega and Cronbach's alpha, convergent validity, discriminant validity, and construct validity with confirmatory factor analysis (CFA).
  
  
  RESULTS
  The results of the CFA supported a six-factor model and 21 items were retained in the AHP-SF with acceptable model fit. For the discriminant validity test, results indicated that adolescents with lower AHP-SF scores were more likely to be overweight or obese, skip breakfast, and spend more time watching TV and playing computer games. The AHP-SF also showed excellent internal consistency with a McDonald's omega of 0.904 (Cronbach's alpha 0.905) in the calibration group.
  
  
  CONCLUSIONS
  The current findings suggest that the AHP-SF is a valid and reliable instrument for the evaluation of adolescent health-promoting behaviors. Primary health care providers and clinicians can use the AHP-SF to assess these behaviors and evaluate the outcome of health promotion programs in the adolescent population.
authors.affiliation: College of Nursing, Chang Gung University of Science and Technology, No, 2, Chiapu Rd, West Sec,, Putz City, Chiayi County 61363, Taiwan. meiyen@gw.cgust.edu.tw.
authors.forename: Mei-Yen
authors.initials: MY
authors.lastname: Chen
authors.forename: Li-Ju
authors.initials: LJ
authors.lastname: Lai
authors.forename: Hsiu-Chih
authors.initials: HC
authors.lastname: Chen
authors.forename: Jorge
authors.initials: J
authors.lastname: Gaete
mesh_terms: D000293:Adolescent; D000294:Adolescent Behavior; D016497:Adolescent Health Services; D000369:Aged, 80 and over; D005163:Factor Analysis, Statistical; D005260:Female; D015438:Health Behavior; D006293:Health Promotion; D006801:Humans; D008297:Male; D009752:Nutritional Status; D011594:Psychometrics / Q000592:standards*; D015203:Reproducibility of Results; D013624:Taiwan