study samples adolescent and young adult survivors of pediatric cancer, their parents, and one sibling; they are assessed using self-report questionnaires, so no intervention takes place

Questionnaires on identity formation and psychosocial functioning, assessed and reported at baseline, one year later, two years later, and five years later.

Questionnaire bundle

After obtaining informed consent, we will access the medical file of participants to obtain information on the diagnosis, time of diagnosis, treatment duration, type of treatment, and relapse (when applicable).

Obtaining information from survivors' medical file

Koen Luyckx, Dr.

The study investigators plan to conduct a longitudinal questionnaire study in adolescents and emerging adults (14-25 years of age at the start of the study) who survived childhood cancer to chart their identity development and broader social functioning. Additionally, the functioning of these survivors will be related to the functioning of their parents and siblings. The investigators shall focus especially on the current experience and impact of the earlier cancer experience. They will investigate to what extent the experience of a life-threatening disease has an effect on the daily life of survivors and over time and how the survivors develop through the course of adolescence and emerging adulthood on the psychosocial level. The formation of an adult identity is a very challenging task during adolescence and the way to adulthood and the fact that these youth had cancer during their childhood may especially complicate this process of identity formation. Furthermore, both parental and sibling functioning will be taken into account, which will allow us to examine inter-generational mechanisms (thus parental functioning that possibly impacts youth functioning and vice versa) and sibling functioning in these families. To investigate the latter, at each timepoint of the longitudinal study a sibling between 14 and 25 years of age at the start of the study will be included (if there is more than one sibling in a family, ideally the sibling who is closest in age will be the one who participates in the study). Moreover, a community sample that is matched on age and sex with the survivor of pediatric cancer will be assessed. This will allow the investigators to make well-founded comparisons regarding identity development and broader psychosocial functioning.

In the present longitudinal study, four main research questions will be investigated.

1. How does identity develop in cancer survivors? Based on previous findings from studies in identity development, it seems that young adults with a chronic disease like type 1 diabetes show less exploration or consider less identity possibilities from which they can choose, e.g. they dwell less upon the choice of education. Does this finding also apply to survivors of childhood cancer or are these youth more similar to a community sample? This research question may provide an answer to the question whether or not there is a continued (psychological) impact of childhood cancer on the later identity development of survivors. For this purpose the investigators shall make use of an identity model which was developed at their research department and which has gained much international research attention. In addition, the investigators want to look at illness-identity, which comprises the amount to which the earlier cancer experience is integrated into one's identity. Does the youngster feel still engulfed by the earlier cancer experience, or has he/she integrated this experience as part of his/her self-concept? Or does the youngster feel even enriched by the earlier cancer experience, thus did he/she end up even stronger through the experience?
2. How do survivors of pediatric cancer and/or their parents function on the psychological level, more specific on the level of life satisfaction and depressive symptoms, and what is the role of identity and personality variables herein? This question examines, among other factors, concepts like benefit-finding, post-traumatic growth, resilience,... Thereby it would be interesting to examine whether different subgroups can be identified, for example, which groups of persons display less adaptive functioning and why?
3. Are there certain parenting dimensions (e.g. overprotection, responsiveness, psychological control,...) which are more prevalent in families that were confronted with pediatric cancer and are these dimensions differently related to the psychosocial adaptation of survivors? Does this relate to certain aspects of survivor functioning, like depressive symptoms and quality of life? Thereby, transactional processes between survivor and parental functioning will be investigated, e.g. does identity development of survivors have an impact on parental well-being, and has parental well-being in turn an impact on survivor functioning? Taken together, the investigators want to investigate to what extent these contextual variables determine the functioning of adolescents and emerging adults.
4. What is the impact for siblings of cancer survivors? How do they go through their identity process? Do they experience the same parenting as the survivors experience themselves? E.g if survivors would experience more parental overprotection, would siblings experience overprotection to the same extent?

Longitudinal Identity Study of Childhood Cancer Survivors

The Long-term Impact of Pediatric Cancer on Adolescents, Emerging Adults, and Their Family: Identity, Psychosocial Functioning, and Development

Dimensions of Identity Development Scale (DIDS); dimensions: commitment making (range: 5 - 25), Identification with Commitment (range: 5 - 25), Exploration in Breadth (rang: 5 - 25), Exploration in Depth (range: 5 - 25), Ruminative Exploration (range: 5 - 25); for each dimension, a higher score indicates more identification with the dimension

Erikson Psychosocial Stage Inventory (EPSI); subscales: Synthesis (range: 5 - 30), Confusion (range: 5 - 30); for each scale, higher scores indicate more identification with the scale

Illness Centrality; total scale range: 0 - 4; A higher score indicates more identification with the scale

Self-Identity after Cancer; dimensions: victim of cancer (range: 1 - 5), cancer patient (range: 1 - 5), person who had cancer (range: 1 - 5), survivor (range: 1 - 5); for each dimension, a higher score indicates more identification with the dimension

Children's Revised Impact of Event Scale (CRIES-13); total scale range: 0 - 65; Higher scores indicate more sensitivity for PTSD; A score higher than 30 possibly indicates the presence of PTSD; subscales: Intrusion (range: 0 - 20), Avoidance (range: 0 - 20), Arousal (range: 0 - 25); Higher scores indicate more identification with the scale

Benefit scale from the Benefit and Burden Scale (BBSC); total scale range: 10 - 50; A higher score indicates more identification with the scale

Center for Epidemiologic Studies Depression (CES-D-12); total scale range: 0 - 36; a higher score indicates the presence of more depressive symptoms

Cancer Related Worries Scale; total scale range: 4 - 20; A higher score indicates the presence of more cancer-related worries

Satisfaction with Life Scale (SWLS); total scale range: 5 - 35; A higher score indicates more satisfaction with life

Short Form 36, physical subscale (SF-36); total scale range: 10 - 30: A higher score indicates worse bodily functioning

Rosenberg Self-Esteem Scale (RSES); total scale range: 10 - 40: A higher score indicates higher self-esteem

Brief Resilience Scale (BRS); total scale range: 6 - 30; A higher score corresponds to being more resilient

Big Five Inventory 10 (BFI-10); subscales: Extraversion (range: 2 - 10), Agreeableness (range: 2 - 10), Conscientiousness (range: 2 - 10), Neuroticism (range: 2 - 10), Openness (range: 2 - 10); for each scale, a higher score indicates more identification with the scale

Based on Goossens et al., 2013: Health risk behaviors in adolescents and emerging adults with congenital heart disease: psychometric properties of the Health Behavior Scale-Congenital Heart Disease

Multidimensional Health Locus of Control Scale (MHLCS): subscales: Internal Health Locus of Control (range 6 - 36), Powerful Others Health Locus of Control (range 6 - 36), Chance Health Locus of Control (range: 6 - 36); for each scale, a higher score indicates more identification with the scale

Multidimensional Scale of Perceived Social Support (MSPSS); subscales: support from special someone (range: 4 - 28), support from family (range: 4 - 28), support from friends (range: 4 - 28); for each subscale, a higher score indicates more support

Based on the 8-item Parental Expectations for Behavior Scale and the 8-item Parental Monitoring of Behavior Scale uit de 'Parental Regulation Scale - Youth Self-Report' (PRS -YSR; Barber, 2002); Behavioral Control; total scale range: 7 - 35; A higher score indicates more parental behavioral control

Child Report of Parent Behavior Inventory (CRPBI; Schaefer, 1965; Schludermann \& Schludermann, 1988); Responsiveness; total scale range: 7 - 35; A higher score indicates more parental responsiveness

based on Dutch Multidimensional Overprotective Parenting Scale, Kins \& Soenens, 2013; Overprotection / anxious parenting; Overprotection; total scale range: 8 - 40; A higher score indicates more parental overprotection

8-item Psychological Control Scale-Youth Self-Report ( Barber, 1996); Psychological Control; total scale range: 8 - 40; A higher score indicates more parental psychological control

Illness Intrusiveness Questionnaire Parent Report (IIQ-Parent Report); total scale range: 13 - 91; A higher score indicates more illness intrusiveness

Parenting Stress Index - Sense of Competence Scale; total scale range: 13 - 78; A higher score indicates a lower sense of parental competence

Parental Burden Questionnaire, subscale role restriction; total scale range: 6 - 24; A higher score indicates a greater sense of role restriction

Family Functioning Questionnaire, subscale parental relationship quality; total scale range: 5 - 20; A higher score indicates a greater sense of partner relationship quality

Benefit Finding Scale; total scale range: 15 - 105; A higher score indicates more benefit finding

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Longitudinal Identity Study of Childhood Cancer Survivors	NCT03424343	Pediatric Cance...	Questionnaire b... Obtaining infor...	14 Years - 25 Years	KU Leuven
Longitudinal Identity Study of Childhood Cancer Survivors	NCT03424343	Pediatric Cance...	Questionnaire b... Obtaining infor...	14 Years - 25 Years	KU Leuven

Spots Global Cancer Trial Database for obtaining information from survivors' medical file