Psychosocial characteristics of adolescents who refuse cancer treatment

Facilitators and barriers to adherence to medical recommendations among adolescents with cancer: A systematic review

We aimed to systematically review barriers/facilitators of adherence among adolescents with cancer (aged 10-24 years), following a comprehensive approach to adherence that goes beyond medication-taking. Empirical studies published in English exploring determinants of adherence to medical recommendations among adolescents with cancer were identified in MEDLINE, PsycInfo, and Web of Science, up to October 2021. Records and full-text articles were reviewed by two independent reviewers, and results were classified according to the World Health Organization's (WHO) multidimensional adherence model. Eighteen studies were included. Despite heterogeneity in the definition and measurement of adherence, literature supported barriers/facilitators at patient, treatment, condition, healthcare team/system, and social/economic levels. Specifically, patient-related factors (i.e., psychological functioning and beliefs about disease and treatment) and social-related factors (i.e., family functioning) were major determinants of adolescent adherence. Few studies were conducted, and inconsistent findings were displayed for other dimensions (i.e., healthcare team/system, treatment, and condition-related factors). Adherence is a complex and multidetermined phenomenon. More research is needed to provide critical insights for policymakers and healthcare professionals in planning practices and interventions that effectively address meaningful barriers/facilitators of adolescents' adherence.

Cultural and Religious Variation in Attitudes to Young People Consenting to Health Interventions

There is a limited amount of empirical data available regarding the cultural and religious variation in perceptions about the age when young people should be regarded as competent to make decisions in health settings. A public survey of 400 adults from diverse religious and ethnic backgrounds was conducted in the UK and Spain. Attitudes were assessed using case vignettes. It was found that high religious practice was associated with recommending a higher age of consent for medical interventions. White British adults were more likely than Spanish adults to agree that younger adolescents should be allowed to consent to medical interventions. The study suggests that there is social, cultural and religious variation in adults' attitudes regarding the age when youngsters should consent to health interventions.

A systematic review of factors that influence treatment adherence in paediatric oncology patients

WHAT IS KNOWN AND OBJECTIVE

Treatment adherence is an essential component in ensuring best outcomes in the management of paediatric cancers. Compared to the adult population, treatment adherence in the paediatric population is a more complex subject which involves unique dimensions. In this study, we aimed to systematically review the literature to identify factors associated with treatment adherence in the paediatric oncology population.

METHODS

A literature search was carried out using related keywords on electronic databases.

RESULTS AND DISCUSSION

A total of 1036 articles were reviewed, and 39 articles were found to be relevant. A comprehensive review of these articles identified 17 factors that influence adherence. These factors were classified into five major categories: patient-/caregiver-related factors; therapy-related factors; condition-related factors; health system-related factors; and social/economic factors. A baby bear model was proposed to better visualize these five categories that affect treatment adherence, and a framework of questions was designed to help clinicians identify those at risk of non-adherence for early intervention.

WHAT IS NEW AND CONCLUSION

Seventeen factors reviewed were categorized into five main categories, namely patient-/caregiver-related factors, therapy-related factors, condition-related factors, health system factors and social/economic factors, as causes for poor medication adherence in the paediatric oncology population. Clinicians need to be aware that these factors can interact to influence treatment adherence and that some factors may be more relevant in specific contexts (e.g. third world countries, minority groups). The baby bear model is presented to help understand the issues affecting adherence in the paediatric oncology population, and a framework of questions is proposed to help clinicians identify patients at risk of non-adherence.

Adherence-related issues in adolescents and young adults with hematological disorders

Nonadherence to medical recommendations is a widespread problem well documented in a multitude of clinical settings. Nonadherence may adversely affect clinical outcomes such as survival and quality of life and increase health-care-related costs. An understanding of the factors driving nonadherence is key to developing effective adherence-enhancing interventions (AEIs). There are ongoing attempts in contemporary adherence research to better define the various components of adherence, to find optimal measures of adherence and correlations with clinical outcomes, and to create a classification system for AEIs. Nonadherence is also widely prevalent among adolescents and young adults (AYAs) with chronic hematological diseases, affecting up to 50% of patients and increasing with age. Combined use of objective (i.e. electronic monitoring, EM) and subjective (i.e. self-report) measures of adherence may be the preferred approach to assess adherence. The unique physical, social and emotional aspects of the AYA life stage are closely related to intricate causes of nonadherence in AYAs such as problems in transition to adult care. Until proven otherwise, the empirical target in AYAs with hematological disorders should be perfect adherence. Multilevel AEIs, EM feedback and behavioral interventions are among the most effective types of AEIs. Despite the magnitude of the problem, only a handful of AEIs have been evaluated among AYAs with hematological disorders. Thus, this is a field with unmet needs warranting high-quality trials using standardized and well-specified assessment methods and interventions. This review discusses the prevalence, definition, causes and clinical implications of nonadherence among AYAs with hematological disorders, along with strategies to measure and improve adherence.

Treatment non-adherence in teenage and young adult patients with cancer

Adhering to treatment can be a significant issue for many patients diagnosed with chronic health conditions and this has been reported to be greater during the adolescent years. However, little is known about treatment adherence in teenage and young adult (TYA) patients with cancer. To increase awareness of the adherence challenges faced by these patients, we have reviewed the published work. The available evidence suggests that a substantial proportion of TYA patients with cancer do have difficulties, with reports that up to 63% of patients do not adhere to their treatment regimens. However, with inconsistent findings across studies, the true extent of non-adherence for these young patients is still unclear. Furthermore, it is apparent that there are many components of the cancer treatment regimen that have yet to be assessed in relation to patient adherence. Factors that have been shown to affect treatment adherence in TYA patients include patient emotional functioning (depression and self-esteem), patient health beliefs (perceived illness severity and vulnerability), and family environment (parental support and parent-child concordance). Strategies that foster greater patient adherence are also identified. These strategies are multifactorial, targeting not only the patient, but the health professional, family, and treatment regimen. This review highlights the lack of interventional studies addressing treatment adherence in TYA patients with cancer, with only one such intervention being identified: a video game intervention focusing on behavioural issues related to cancer treatment and care. Methodological issues in measuring adherence are addressed and suggestions for improving the design of future adherence studies highlighted, of which there is a great need.

Prospective study of factors predicting adherence to medical advice in men with testicular cancer

PURPOSE

To identify predictive factors of adherence to medical advice, specifically the likelihood of attendance to a recommended follow-up regimen in patients with newly diagnosed testicular cancer. PATIENTS AND METHODS; This was a prospective study measuring initially not only aspects of the doctor-patient interview, but also a range of demographic, psychological, social, and medical factors, and then recording attendance behavior on follow-up. All 209 new patients with testicular cancer referred between June 1992 and May 1995 were approached, and 184 men consented and completed questionnaires. The nonadherence end point (nonattender) was two failures to attend an outpatient appointment at least 1 month apart, despite a written reminder.

RESULTS

Thirty-two participants (17%) were classified as nonattenders. No significant differences were found between attenders and nonattenders in the majority of psychosocial and medical variables that might have predicted nonadherence to medical advice. There was a highly significant association between nonattendance and a patient's perception of an unsatisfactory affective relationship with his clinician (P = .005; hazard ratio, 3.1; 95% CI, 1.4 to 6.6).

CONCLUSION

Patients who perceived an unsatisfactory affective relationship with their clinician that included an inability to trust the clinician and a perception that they were not being treated as "a person" were subsequently more likely to disregard medical advice regarding follow-up. Attention to the ways young men may wish to communicate with their clinicians is important, bearing in mind that they may not necessarily adhere to stereotypical images of masculine self-dependence.

A video game improves behavioral outcomes in adolescents and young adults with cancer: a randomized trial

OBJECTIVE

Suboptimal adherence to self-administered medications is a common problem. The purpose of this study was to determine the effectiveness of a video-game intervention for improving adherence and other behavioral outcomes for adolescents and young adults with malignancies including acute leukemia, lymphoma, and soft-tissue sarcoma.

METHODS

A randomized trial with baseline and 1- and 3-month assessments was conducted from 2004 to 2005 at 34 medical centers in the United States, Canada, and Australia. A total of 375 male and female patients who were 13 to 29 years old, had an initial or relapse diagnosis of a malignancy, and currently undergoing treatment and expected to continue treatment for at least 4 months from baseline assessment were randomly assigned to the intervention or control group. The intervention was a video game that addressed issues of cancer treatment and care for teenagers and young adults. Outcome measures included adherence, self-efficacy, knowledge, control, stress, and quality of life. For patients who were prescribed prophylactic antibiotics, adherence to trimethoprim-sulfamethoxazole was tracked by electronic pill-monitoring devices (n = 200). Adherence to 6-mercaptopurine was assessed through serum metabolite assays (n = 54).

RESULTS

Adherence to trimethoprim-sulfamethoxazole and 6-mercaptopurine was greater in the intervention group. Self-efficacy and knowledge also increased in the intervention group compared with the control group. The intervention did not affect self-report measures of adherence, stress, control, or quality of life.

CONCLUSIONS

The video-game intervention significantly improved treatment adherence and indicators of cancer-related self-efficacy and knowledge in adolescents and young adults who were undergoing cancer therapy. The findings support current efforts to develop effective video-game interventions for education and training in health care.

Understanding medication adherence in pediatric acute lymphoblastic leukemia: a review

Significant numbers of children and adolescents with acute lymphoblastic leukemia (ALL) do not adequately adhere to their treatment regimen. Failure to take the appropriate amount of prescribed medication may result in disease relapse. Although a number of research studies have sought to identify the factors associated with medication nonadherence in this group, no systematic study has sought to evaluate the efficacy of intervention packages in improving adherence. The aim of the current paper is to provide an overview of the research investigating treatment adherence in ALL patients and to identify the relevant risk factors associated with reduced adherence with medication. The paper will further discuss the role of psychologic therapy in improving treatment adherence in children and adolescents with ALL, with a particular focus on identifying the need for controlled outcome studies.

An evaluation of the impact of a self-care coping intervention on psychological and clinical outcomes in adolescents with newly diagnosed cancer

The demands of cancer treatment are particularly challenging for newly diagnosed adolescents. If attempts to cope with these demands are unsuccessful, adolescents may not comply with or may refuse treatment. As a result, their chances of survival are decreased. The purpose of this study, guided by the Adolescent Self-Sustaining Model, was to determine the effects of a three-part educational intervention designed to facilitate copying on psychological (hopefulness, hopelessness, self-esteem, self-efficacy and symptom distress) and clinical outcomes (treatment toxicity) among adolescents newly diagnosed with cancer. This two-site study used a longitudinal experimental two-group design with adolescents randomly assigned to the intervention or control group. Four measurement points spanning the first 6 months of treatment were included in the design. Of 93 eligible adolescents, 78 (46 females and 32 males) agreed to participate. No statistically significant differences between the intervention and control groups, or between male and female participants, were detected at any measurement point. Differences in scores over time within groups were noted. Explanations for the lack of group differences are offered, as are recommendations for strengthening the intervention and design for future testing.

[Therapeutic compliance in adolescents with chronic disease]

In clinical practice, non-compliance is an often unrecognised or frustrating reality, which physicians find difficult to accept or deal with. Possible determinants of adolescents' level of compliance may be divided into demographic factors, patient and family characteristics, aspects of the illness and treatment regimen, and quality of the patient-doctor relationship. Compliance should be viewed as a reflexion of the experience of chronic illness as well as the expression of specific adolescent developmental issues. Practical guidelines are proposed.

The role of adolescents in decisions concerning their cancer therapy

Because adolescents are codified as incompetents, their health care decision-making authority often is encroached upon. When a teenager develops a serious disease such as cancer, others are even more likely to appropriate decision-making authority than under normal circumstances. Adolescents can contribute to decisions concerning their treatment provided certain guidelines are used. These guidelines stem from bioethical concerns and our understanding of the development in cognitive ability related to decision-making. This article summarizes considerations relating to each of these two areas. Because the clinical stage of the malignancy also affects bioethical concerns, the adolescent's role in decision-making at the time of initial diagnosis and recurrence are discussed.

Survival of children and adolescents with acute lymphoid leukemia. A study of American Indians and Hispanic and non-Hispanic whites treated in New Mexico (1969 to 1986)

During the period 1969 to 1986, 196 American Indian and Hispanic and non-Hispanic white children and adolescents (ages, 0 to 19 years) were treated for acute lymphoid leukemia (ALL) at the University of New Mexico affiliated institutions. There were 28 American Indians (14%), 91 Hispanic whites (46%), and 77 non-Hispanic whites (39%). Median survivals for patients undergoing antileukemic therapy ranged from 8 months for American Indian boys to 140 months for non-Hispanic white girls. American Indian boys had the highest initial median leukocyte count (WBC) at 23.8 X 10(9)/l. Compliance problems occurred most commonly among American Indian children of both genders. Other clinical and pathologic features evaluated in this study were distributed similarly among the ethnic gender groups. Multi-variate analysis revealed that independent prognostic variables for survival included initial WBC, age, and gender. Ethnicity and compliance problems were possible, but confounded, prognostic variables. To the authors' knowledge this represents the most comprehensive study to date of ALL in American Indian patients.

Chemotherapy side effects in pediatric oncology patients: drugs, age, and sex as risk factors

Nausea, vomiting, and the extent to which chemotherapy-bothered children were assessed by patient and parent ratings for 31 children (65 courses) receiving combination chemotherapy with either high-dose cyclophosphamide or doxorubicin/daunorubicin. Patients and parents both reported more severe vomiting with cyclophosphamide than with the anthracyclines. The use of antiemetics did not affect emesis for the former drug; for the anthracyclines, there was more severe emesis for courses with antiemetics than for those with none. Adolescents reported more severe nausea than children, and females reported both more nausea and bother than males. There were no significant age or sex findings for parent reports. The findings suggest that chemotherapy-related nausea and vomiting in children is a complex phenomenon not accounted for by drugs alone.

Psychosocial issues during the acute treatment of pediatric cancer

Facilitating the psychosocial adjustment of the child with cancer begins at the time of diagnosis. This paper reviews the current status of psychosocial research and interventions useful during the acute phase of cancer treatment. Factors related to a favorable adaptation include the child's understanding of what is happening and the ability of the family to provide emotional support. Recent data suggest that a child's adjustment is closely linked to the social supports available to the parents and to parental distress levels. Continued progress has been made in the use of psychological techniques to control the behavioral side effects of chemotherapy and children's distress levels during painful medical procedures. New research has also identified a number of factors related to treatment refusal and noncompliance among adolescent cancer patients. These new developments provide a basis for programs aimed at preventing or reducing the psychosocial problems of the child and family facing pediatric cancer.