@article{WarschburgerHaenigFriedtetal.2014,
  author    = {Warschburger, Petra and Haenig, Johanna and Friedt, Michael and Posovszky, Carsten and Schier, Maike and Calvano, Claudia},
  title     = {Health-Related quality of life in children with abdominal pain due to functional or organic gastrointestinal disorders},
  series = {Journal of pediatric psychology},
  volume    = {39},
  journal   = {Journal of pediatric psychology},
  number    = {1},
  publisher = {Oxford Univ. Press},
  address   = {Cary},
  issn      = {0146-8693},
  doi       = {10.1093/jpepsy/jst070},
  pages     = {45 -- 54},
  year      = {2014},
  language  = {en}
}
@article{CalvanoWarschburger2016,
  author    = {Calvano, Claudia and Warschburger, Petra},
  title     = {Chronic Abdominal Pain in Children and Adolescents: Parental Threat Perception Plays a Major Role in Seeking Medical Consultations},
  series = {Journal of the International Society of Sports Nutrition},
  journal   = {Journal of the International Society of Sports Nutrition},
  publisher = {Hindawi Publishing Corp.},
  address   = {New York},
  issn      = {1203-6765},
  doi       = {10.1155/2016/3183562},
  pages     = {1 -- 10},
  year      = {2016},
  abstract  = {Background. Pain symptoms, associated impairment, and parental perception of threat are reported to be predictors of health care utilization (HCU) in childhood chronic abdominal pain (CAP). However, mediating variables and their interrelations have not yet been systematically studied. Objectives. This study aims to identify mediating pathways of influence between child's abdominal pain and the number of pain-related medical visits. Methods. In a multicenter study, we recruited N = 151 parent-child dyads with children aged 6-17 years suffering from CAP. A composite measure of pain symptoms was defined as predictor and the number of pain-related medical visits as outcome variable. This relation was analyzed by serial mediation, including child- and parent-reported impairment and parental threat perception as mediators. Results. Only parental threat perception significantly linked child's pain symptoms to the number of medical visits. Measures of impairment did not have a significant effect. Conclusions. Parental pain-related threat perception is strongly related to health care seeking in childhood CAP. Addressing threat perception might be a fruitful parent-centered approach in clinical practice.},
  language  = {en}
}
@misc{WarschburgerCalvanoBeckeretal.2017,
  author    = {Warschburger, Petra and Calvano, Claudia and Becker, Sebastian and Friedt, Michael and Hudert, Christian and Posovszky, Carsten and Schier, Maike and Wegscheider, Karl},
  title     = {Stop the pain : study protocol for a randomized-controlled trial},
  url       = {http://nbn-resolving.de/urn:nbn:de:kobv:517-opus4-401451},
  pages     = {11},
  year      = {2017},
  abstract  = {Background: Functional abdominal pain (FAP) is not only a highly prevalent disease but also poses a considerable burden on children and their families. Untreated, FAP is highly persistent until adulthood, also leading to an increased risk of psychiatric disorders. Intervention studies underscore the efficacy of cognitive behavioral treatment approaches but are limited in terms of sample size, long-term follow-up data, controls and inclusion of psychosocial outcome data. Methods/Design: In a multicenter randomized controlled trial, 112 children aged 7 to 12 years who fulfill the Rome III criteria for FAP will be allocated to an established cognitive behavioral training program for children with FAP (n = 56) or to an active control group (focusing on age-appropriate information delivery; n = 56). Randomization occurs centrally, blockwise and is stratified by center. This study is performed in five pediatric gastroenterology outpatient departments. Observer-blind assessments of outcome variables take place four times: pre-, post-, 3- and 12-months post-treatment. Primary outcome is the course of pain intensity and frequency. Secondary endpoints are health-related quality of life, pain-related coping and cognitions, as well as selfefficacy. Discussion: This confirmatory randomized controlled clinical trial evaluates the efficacy of a cognitive behavioral intervention for children with FAP. By applying an active control group, time and attention processes can be controlled, and long-term follow-up data over the course of one year can be explored.},
  language  = {en}
}
@phdthesis{Calvano2018,
  author    = {Calvano, Claudia},
  title     = {Funktionelle Bauchschmerzen im Kindesalter},
  school      = {Universit{\"a}t Potsdam},
  pages     = {209},
  year      = {2018},
  abstract  = {Funktionelle Bauchschmerzen des Kindes betreffen die ganze Familie, wobei die Literatur insbesondere die Rolle der Eltern hervorhebt. Bisher wurden die Eltern jedoch prim{\"a}r als „critical behavioral agents" (Palermo \& Eccleston, 2009) gesehen, die einen Einfluss auf die Bauchschmerzen und Beeintr{\"a}chtigung des Kindes aus{\"u}ben. Untersuchungen der psychosozialen Auswirkungen der Bauchschmerzen und der Beeintr{\"a}chtigung des Kindes auf die Eltern wurden bislang vernachl{\"a}ssigt (Palermo \& Eccleston, 2009). Die Dissertation hatte daher zum Ziel, die Rolle der Eltern bei funktionellen Bauchschmerzen umfassend zu betrachten, indem sowohl schmerzbezogene Reaktionen der Eltern, als auch die psychosoziale Belastung der Eltern ber{\"u}cksichtigt und systematisch in Zusammenhang zu den Bauchschmerzen und der Beeintr{\"a}chtigung des Kindes untersucht wurden. Zum anderen sollten durch Interventionsstudien Aussagen {\"u}ber die Ver{\"a}nderbarkeit spezifischer Belastungsmerkmale der Eltern und {\"u}ber das Wechselspiel zwischen der Ebene der Eltern und der Ebene des Kindes erm{\"o}glicht werden. Anhand von vier Studien sollten die Fragen beantworten werden 1) welche Faktoren die {\"a}rztliche Inanspruchnahme beeinflussen und welche besondere Relevanz dabei die Bewertungsprozesse der Eltern besitzen, 2) wie die psychosoziale Belastung der Eltern charakterisiert ist und durch welche Faktoren sie beeinflusst wird, 3) welche Ver{\"a}nderungen im Rahmen einer kindzentrierten verhaltenstherapeutischen Intervention auf Seiten der Eltern zu beobachten sind und 4) wie sich diese Ver{\"a}nderungen seitens der Eltern und seitens des Kindes gegenseitig beeinflussen.},
  language  = {de}
}