@misc{WarschburgerZitzmann2019,
  author    = {Warschburger, Petra and Zitzmann, Jana},
  title     = {Does an Age-Specific Treatment Program Augment the Efficacy of a Cognitive-Behavioral Weight Loss Program in Adolescence and Young Adulthood? Results from a Controlled Study},
  series = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam Humanwissenschaftliche Reihe},
  number    = {584},
  issn      = {1866-8364},
  doi       = {10.25932/publishup-43942},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-439424},
  pages     = {20},
  year      = {2019},
  abstract  = {Research on weight-loss interventions in emerging adulthood is warranted. Therefore, a cognitive-behavioral group treatment (CBT), including development-specific topics for adolescents and young adults with obesity (YOUTH), was developed. In a controlled study, we compared the efficacy of this age-specific CBT group intervention to an age-unspecific CBT group delivered across ages in an inpatient setting. The primary outcome was body mass index standard deviation score (BMI-SDS) over the course of one year; secondary outcomes were health-related and disease-specific quality of life (QoL). 266 participants aged 16 to 21 years (65\% females) were randomized. Intention-to-treat (ITT) and per-protocol analyses (PPA) were performed. For both group interventions, we observed significant and clinically relevant improvements in BMI-SDS and QoL over the course of time with small to large effect sizes. Contrary to our hypothesis, the age-specific intervention was not superior to the age-unspecific CBT-approach.},
  language  = {en}
}
@misc{ZitzmannWarschburger2018,
  author    = {Zitzmann, Jana and Warschburger, Petra},
  title     = {Psychometric properties of figure rating scales in children},
  series = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  journal   = {Postprints der Universit{\"a}t Potsdam : Humanwissenschaftliche Reihe},
  number    = {487},
  issn      = {1866-8364},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-416871},
  pages     = {11},
  year      = {2018},
  abstract  = {This study examined psychometric properties of figure rating scales, particularly the effects of ascending silhouette ordering, in 153 children, 9 to 13 years old. Two versions of Collins's (1991) figural rating scale were presented: the original scale (figures arranged ascendingly) and a modified version (randomized figure ordering. Ratings of current and ideal figure were elicited and body dissatisfaction was calculated. All children were randomly assigned to one of two subgroups and completed both scale versions in a different sequence. There were no significant differences in figure selection and body dissatisfaction between the two figure orderings. Regarding the selection of the current figure, results showed that girls are more affected by the silhouette ordering than boys. Our results suggest that figure rating scales are both valid and reliable, whereby correlation coefficients reveal greater stability for ideal figure selections and body dissatisfaction ratings when using the scale with ascending figure ordering.},
  language  = {en}
}