@article{JaiteBuehrenDahmenetal.2019,
  author    = {Jaite, Charlotte and B{\"u}hren, Katharina and Dahmen, Brigitte and Dempfle, Astrid and Becker, Katja and Correll, Christoph U. and Egberts, Karin M. and Ehrlich, Stefan and Fleischhaker, Christian and von Gontard, Alexander and Hahn, Freia and Kolar, David and Kaess, Michael and Legenbauer, Tanja and Renner, Tobias J. and Schulze, Ulrike and Sinzig, Judith and Thomae, Ellen and Weber, Linda and Wessing, Ida and Antony, Gisela and Hebebrand, Johannes and F{\"o}cker, Manuel and Herpertz-Dahlmann, Beate},
  title     = {Clinical Characteristics of Inpatients with Childhood vs. Adolescent Anorexia Nervosa},
  series = {Nutrients},
  volume    = {11},
  journal   = {Nutrients},
  number    = {11},
  issn      = {2072-6643},
  doi       = {10.3390/nu11112593},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-193160},
  pages     = {2593},
  year      = {2019},
  abstract  = {We aimed to compare the clinical data at first presentation to inpatient treatment of children (<14 years) vs. adolescents (≥14 years) with anorexia nervosa (AN), focusing on duration of illness before hospital admission and body mass index (BMI) at admission and discharge, proven predictors of the outcomes of adolescent AN. Clinical data at first admission and at discharge in 289 inpatients with AN (children: n = 72; adolescents: n = 217) from a German multicenter, web-based registry for consecutively enrolled patients with childhood and adolescent AN were analyzed. Inclusion criteria were a maximum age of 18 years, first inpatient treatment due to AN, and a BMI <10th BMI percentile at admission. Compared to adolescents, children with AN had a shorter duration of illness before admission (median: 6.0 months vs. 8.0 months, p = 0.004) and higher BMI percentiles at admission (median: 0.7 vs. 0.2, p = 0.004) as well as at discharge (median: 19.3 vs. 15.1, p = 0.011). Thus, in our study, children with AN exhibited clinical characteristics that have been associated with better outcomes, including higher admission and discharge BMI percentile. Future studies should examine whether these factors are actually associated with positive long-term outcomes in children.},
  language  = {en}
}
@article{KolarBuehrenHerpertzDahlmannetal.2018,
  author    = {Kolar, David R. and B{\"u}hren, Katharina and Herpertz-Dahlmann, Beate and Becker, Katja and Egberts, Karin and Ehrlich, Stefan and Fleischhaker, Christian and von Gontard, Alexander and Hahn, Freia and Huss, Michael and Jaite, Charlotte and Kaess, Michael and Tanja, Legenbauer and Renner, Tobias J. and Roessner, Veit and Schulze, Ulrike and Sinzig, Judith and Wessing, Ida and Hebebrand, Johannes and F{\"o}cker, Manuel and Jenetzky, Ekkehart},
  title     = {Seasonal variation of BMI at admission in German adolescents with anorexia nervosa},
  series = {PLoS ONE},
  volume    = {13},
  journal   = {PLoS ONE},
  doi       = {10.1371/journal.pone.0203844},
  url       = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-223462},
  year      = {2018},
  abstract  = {Objective Recent preliminary studies indicated a seasonal association of BMI at admission to inpatient treatment for anorexia nervosa (AN), indicating lower BMI in the cold season for restrictive AN. An impaired thermoregulation was proposed as the causal factor, based on findings in animal models of AN. However, findings regarding seasonality of BMI and physical activity levels in the general population indicate lower BMI and higher physical activity in summer than in winter. Therefore, we aimed to thoroughly replicate the findings regarding seasonality of BMI at admission in patients with AN in this study. Method AN subtype, age- and gender-standardized BMI scores (BMI-SDS) at admission, mean daily sunshine duration and ambient temperature at the residency of 304 adolescent inpatients with AN of the multi-center German AN registry were analyzed. Results A main effect of DSM-5 AN subtype was found (F(2,298) = 6.630, p = .002), indicating differences in BMI-SDS at admission between restrictive, binge/purge and subclinical AN. No main effect of season on BMI-SDS at admission was found (F(1,298) = 4.723, p = .025), but an interaction effect of DSM-5 subtype and season was obtained (F(2,298) = 6.625, p = .001). Post-hoc group analyses revealed a lower BMI-SDS in the warm season for restrictive AN with a non-significant small effect size (t(203.16) = 2.140, p = .033; Hedges′g = 0.28). Small correlations of mean ambient temperature (r = -.16) and daily sunshine duration (r = -.22) with BMI-SDS in restrictive AN were found. However, the data were widely scattered. Conclusions Our findings are contrary to previous studies and question the thermoregulatory hypothesis, indicating that seasonality in AN is more complex and might be subject to other biological or psychological factors, for example physical activity or body dissatisfaction. Our results indicate only a small clinical relevance of seasonal associations of BMI-SDS merely at admission. Longitudinal studies investigating within-subject seasonal changes might be more promising to assess seasonality in AN and of higher clinical relevance.},
  language  = {en}
}