Knowledge of physician prescriptions and adherence to treatment among children with cystic fibrosis and their mothers

Growth of condition-related knowledge among youth with spina bifida: associations with neurocognitive functioning and self-management skills

OBJECTIVE

This study aims to characterize the growth in condition-related knowledge in youth with spina bifida (SB), identify neurocognitive predictors of growth, and examine associations between growth in knowledge and subsequent levels of medical self-management skills.

METHODS

Participants were recruited from a larger longitudinal study involving 140 youth with SB and caregivers, who completed questionnaires and interviews every 2 years over 8 years. The current study included the youth report of condition-related knowledge and medical self-management skills. Youth attention and executive functioning were assessed via parent and teacher reports and performance-based assessment. Latent growth curves were conducted in Mplus Version 8 (Múthen, L. K., & Múthen, B. O. [1998]. Mplus User's Guide. [Eighth]. Muthén & Muthén) to examine change over time in youth-reported condition-related knowledge. Neurocognitive variables were included as predictors of growth in knowledge and regression analyses were used to predict medical self-management skills from growth in condition-related knowledge.

RESULTS

Youth condition-related knowledge increased linearly. Better youth performance on working memory and attention performance-based tasks predicted a higher intercept for condition-related knowledge at T1, but not slope. Teacher and parent reports of inattention and executive dysfunction were not consistent predictors of intercept and growth. Slope of condition-related knowledge was not predictive of subsequent youth self-management skills.

CONCLUSIONS

Youth with SB gain condition-related knowledge over time. However, executive dysfunction and inattention may impede gains in condition-related knowledge. Thus, executive functioning supports, attention-related interventions, and psychoeducation may support condition-related knowledge gains and later medical self-management skills, but further research assessing family and cultural factors is needed.

Aiming to Improve Equity in Pulmonary Health: Cystic Fibrosis

This review summarizes the evidence of health disparities in cystic fibrosis (CF), an autosomal recessive genetic disorder with substantial variation in disease progression and outcomes. We review disparities by race, ethnicity, socioeconomic status, geographic location, gender identity, or sexual orientation documented in the literature. We outline the mechanisms that generate and perpetuate such disparities across levels and domains of influence and assess the implications of this evidence. We then recommend strategies for improving equity in CF outcomes, drawing on recommendations for the general population and considering approaches specific to people living with CF.

Self-Management in Youth With Spina Bifida: Associations With Parent Factors in the Context of a Summer Camp Intervention

OBJECTIVE

To investigate cross-sectional and longitudinal associations between parent factors and self-management for youth with spina bifida (SB).

METHODS

Participants were 89 camper-parent dyads recruited for a summer camp program for youth with SB (Myouthage = 12.2 years); 48 of these families participated across 2 years. Campers and parents completed assessments at Time 1 (pre-camp) and Time 3 (post-camp) for one or two summers. Parents reported on demographics, their own adjustment, perceptions, attitudes, and behaviors, and youth condition-related responsibility and task mastery. Youth also reported on condition-related responsibility. Hierarchical multiple regression analyses and multilevel modeling were used to examine relationships between parent factors and youth self-management.

RESULTS

Parents' expectations for future goal attainment were positively associated with camper responsibility and task mastery, and these associations were moderated by camper age (only significant for older campers). When examining changes over one summer, parental expectations for the future were significantly associated with changes in campers' condition-related task mastery. When examining trajectories across summers, parental perception of child vulnerability was negatively associated with the slope of condition-related responsibility and parents' expectations for future goal attainment were positively associated with the slope of task mastery.

CONCLUSIONS

Parent perceptions and behaviors may be important targets for assessment and intervention when promoting condition-related independence for youth with SB.

Socioeconomic determinants of respiratory health in patients with cystic fibrosis: implications for treatment strategies

INTRODUCTION

Great variation exists in the progression and outcomes of cystic fibrosis (CF) lung disease, due to both genetic and environmental influences. Social determinants mediate environmental exposures and treatment success; people with CF from socioeconomically disadvantaged backgrounds have worse health and die younger than those in more advantaged positions.

AREAS COVERED

This paper reviews the literature on the mechanisms that are responsible for generating and sustaining disparities in CF health, and the ways by which social determinants translate into health advantages or disadvantages in people with CF. The authors make recommendations for addressing social risk factors in CF clinical practice.

EXPERT OPINION

Socioeconomic factors are not dichotomous and their impact is felt at every step of the social ladder. CF care programs need to adopt a systematic protocol to screen for health-related social risk factors, and then connect patients to available resources to meet individual needs. Considerations such as daycare, schooling options, living and working conditions, and opportunities for physical exercise and recreation as well as promotion of self-efficacy are often overlooked. In addition, advocacy for changes in public policies on health insurance, environmental regulations, social welfare, and education would all help address the root causes of CF health inequities.

Initial Validation of IBD KNOW-IT: Measuring Patient and Caregiver Knowledge of a Child's Disease and Treatment Regimen

The present study describes the development and initial validation of a newly developed measure of child and caregiver knowledge of the child's own IBD and treatment, called IBD KNOW-IT. One hundred and fifty-five children and their caregivers completed the IBD KNOW-IT as well as a scale designed to compare each dyad's perceived knowledge to their actual knowledge. Initial psychometric evaluation of IBD KNOW-IT was completed by conducting factor analysis and determining internal consistency, convergent validity, and associations with demographic and medical characteristics. Results supported the validity of a 12-item measure with 4 subscales including Symptoms, Medication Regimen, Disease Monitoring, and Medical Team. Support for the internal consistency of IBD KNOW-IT was obtained. Evidence of validity was demonstrated by significant correlations between child and caregiver scales, and high congruence between perceived and actual knowledge across all subscales. The reliability of the measure was demonstrated by good internal consistency and test-retest reliability. Preliminary psychometric evaluation suggests that IBD KNOW-IT is reliable and valid.

Feasibility and acceptability of an innovative adherence intervention for young adults with childhood-onset systemic Lupus Erythematosus

BACKGROUND

In Childhood-Onset Systemic Lupus Erythematosus (cSLE), poor medication adherence rates are very high. Interventions targeting this problem in cSLE are limited thus effective interventions are needed. The objective of this study is to examine the feasibility and acceptability an intervention (automated digital reminders + personalized prescribed treatment plan (pPTP)) to improve medication adherence in young adults with cSLE over 3 months.

METHOD

This is a proof-of-concept randomized controlled study. All participants received SimpleMed+ pillboxes that track adherence. The treatment group received a pPTP, and in month 2, preselected digital reminders for missed doses. Reminders were discontinued after 30 days and adherence data collected. Data analysis was done using t-tests.

RESULTS

Twenty-one participants were approached and nineteen consented to participate, yielding a recruitment rate of 86%. Participants were on average 20.5 years, mostly black (58%) and female (84%). Of the nineteen consented, eleven were randomized to control (57%) and eight to treatment (42%) groups respectively. All participants in the treatment group rated the pillbox as easy to use, notably; none reported boredom with the pillbox or reminders. Also, 88% of participants in the treatment group rated the pillbox as helpful, however, only 50% reported the pPTP taught them new information about lupus or made them more interested in their lupus management.

CONCLUSIONS

This is the first use of an electronic pillbox to track adherence to multiple medications in cSLE. The high rating of the pillbox makes it an acceptable method of measuring adherence. Feasibility and acceptability ratings for the intervention were mixed suggesting a there is a subset of cSLE patients for whom this intervention would be beneficial. Future research should focus on a larger trial.

How Medic-Patient Communication and Relationship Influence Chinese Patients' Treatment Adherence

The deterioration of medic-patient relation in China raises the question about its impact on patients' adherence to medical instructions. This study focuses on how the quantity and quality of medic-patient communication influences their relationship, and how the perceived relationship at individual level, institution level, and society level influences patients' treatment adherence, through a survey conducted in a city of Southern China (N = 597, Response rate = 66%). The results of path analysis show that consulting time is positively associated with patients' relationship with individual doctors and the whole medical system, as well as their satisfaction with hospital. Unpleasant experience of having disputes with medical workers is negatively associated with the medic-patient relationship at all of the three levels and causes conditional nonadherence. The more positive medic-patient relationship perceived by the patients, the more likely they will display unconditional adherence.

Parent knowledge of disease management in cystic fibrosis: Assessing behavioral treatment management

BACKGROUND

Cystic fibrosis (CF) is a life-shortening, burdensome disease requiring complex knowledge to manage the disease. Significant gaps in knowledge have been documented for parents, which may lead to unintentionally poor adherence and insufficient transfer of treatment responsibility from parents to adolescents. There are no current, validated measures of parent knowledge for this population and there are no measures that assess the knowledge required for day-to-day behavioral management of CF. We assessed the psychometric properties of the parent version of the Knowledge of Disease Management-Cystic Fibrosis measure (KDM-CF-P) using data from iCARE (I Change Adherence and Raise Expectations), a randomized control adherence intervention trial.

METHODS

A total of 196 parents in the iCARE standard care/control arm completed 35 items assessing their knowledge of disease management at their 12-month study visit, prior to beginning the intervention. Items were eliminated from the measure if they met the threshold for ceiling effects, were deemed clinically irrelevant, or did not correlate well with their intended scale. Item-to-total correlations, confirmatory factor analysis, discriminant function, reliability, and convergent validity were calculated.

RESULTS

The KDM-CF-P (19 items) demonstrated internal consistency of KR20 = 0.60 on each scale and a two-scale structure. Convergent validity for knowledge scores was found with maternal education, family income, and type of medical insurance. Parents correctly answered approximately 85% of items on the KDM-CF-P.

CONCLUSIONS

The KDM-CF-P psychometrics support a two-scale measure with clinical utility. It is useful for assessing gaps in knowledge that can be remediated through individualized, tailored interventions.

Validation of a Cystic Fibrosis Medication Knowledge Questionnaire

Low adherence to cystic fibrosis (CF) treatment is associated with poor health outcomes, while knowledge of the disease and medication regimen can positively influence adherence. This study’s purpose was to develop and validate a questionnaire to help determine CF medication knowledge of pediatric patients and caregivers. Our questionnaire had 37 items: 22 selected-response and 15 open-response questions. We used validation processes from the Standards for Educational and Psychological Testing. CF experts analyzed validity evidence based on content. Then, the questionnaire was field tested with 17 pediatric patients and 18 caregivers. The correlation between age and medication knowledge was medium (r = .33), but was not significant (P = .189). Cronbach’s α for the overall test was .84. Participants thought the questionnaire was important and suitable, with a few minor suggestions to improve wording. Strong validity evidence indicates the questionnaire could be used to assess medication knowledge and allow more personalized education to improve adherence.

Patient knowledge and pulmonary medication adherence in adult patients with cystic fibrosis

BACKGROUND AND OBJECTIVES

Patient knowledge of lung function (ie, forced expiratory volume in 1 s [FEV₁]% predicted) and the intended benefits of their prescribed pulmonary medications might play an important role in medication adherence, but this relationship has not been examined previously in patients with cystic fibrosis (CF).

METHODS

All patients diagnosed with CF and without prior lung transplantation were invited to complete knowledge and self-reported medication adherence questionnaires during routine outpatient visits to the Adult CF Clinic, St Paul's Hospital, Vancouver, Canada from June 2013 to August 2014.

RESULTS

A total of 142 out of 167 (85%) consecutive adults attending CF clinic completed patient knowledge and medication adherence survey questionnaires. Sixty-four percent of the patients recalled their last FEV₁% predicted value within 5%, and 70% knew the intended benefits of all their prescribed medications. Self-reported adherence rates were highest for inhaled antibiotics (81%), azithromycin (87%), and dornase alpha (76%) and lowest for hypertonic saline (47%). Individuals who knew their FEV₁% predicted value within 5% were more likely to self-report adherence to dornase alpha (84% vs 62%, P=0.06) and inhaled antibiotics (88% vs 64%, P=0.06) compared to those who did not, but these associations were not statistically significant. There were no significant associations observed between patient knowledge of intended medication benefits and self-reported medication adherence.

CONCLUSION

Contrary to our hypothesis, disease- and treatment-related knowledge was not associated with self-reported medication adherence. This suggests other barriers to medication adherence should be targeted in future studies aiming to improve medication adherence in adults with CF.

Lost in translation? How adults living with Cystic Fibrosis understand treatment recommendations from their healthcare providers, and the impact on adherence to therapy

OBJECTIVE

This study builds on the limited research documenting Cystic Fibrosis (CF) patients' understanding of treatment recommendations and how this may impact adherence to therapy.

METHODS

We surveyed adults with CF and their healthcare professional (HCP) to capture treatment recommendations provided by the HCP, and patients' knowledge, and frequency of performance, of these recommendations. We classified CF participants' understanding of treatment recommendations (correct/incorrect) as compared to the actual recommendations made by the HCP. We computed CF participants' adherence in relation to HCP treatment recommendations and to their own understanding of treatment recommendations (adherent/non-adherent).

RESULTS

Complete HCP and patient data were available for 42 participants. The recommended treatment frequency was correctly understood by 0%-87.8% of CF participants. Adherence to HCP treatment recommendations ranged from 0 to 68.3% (mean 45.4%±21.5), and rates were low (<33%) for acapella, percussion/postural drainage, tobramycin nebulization and insulin. Participants' adherence was greater when calculated in relation to participants' understanding of treatment recommendations (62.4%±25.1) than when calculated in relation to actual HCP treatment recommendations (45.4%±21.5%) (p=0.009).

CONCLUSION AND PRACTICE IMPLICATIONS

Adults with CF misunderstand treatment recommendations; this likely affects treatment adherence. Interventions to ensure HCPs use effective communication strategies are needed.

Pseudomonas aeruginosa infection in patients with cystic fibrosis: scientific evidence regarding clinical impact, diagnosis, and treatment

Evidence-based techniques have been increasingly used in the creation of clinical guidelines and the development of recommendations for medical practice. The use of levels of evidence allows the reader to identify the quality of scientific information that supports the recommendations made by experts. The objective of this review was to address current concepts related to the clinical impact, diagnosis, and treatment of Pseudomonas aeruginosa infections in patients with cystic fibrosis. For the preparation of this review, the authors defined a group of questions that would be answered in accordance with the principles of PICO-an acronym based on questions regarding the Patients of interest, Intervention being studied, Comparison of the intervention, and Outcome of interest. For each question, a structured review of the literature was performed using the Medline database in order to identify the studies with the methodological design most appropriate to answering the question. The questions were designed so that each of the authors could write a response. A first draft was prepared and discussed by the group. Recommendations were then made on the basis of the level of scientific evidence, in accordance with the classification system devised by the Oxford Centre for Evidence-Based Medicine, as well as the level of agreement among the members of the group.

Enhancing adherence to inhaled therapies in cystic fibrosis

Nonadherence to inhaled therapies is a major problem in the treatment of cystic fibrosis that can influence lung function and health outcomes. Potential contributors to nonadherence have been identified, including demographic and psychosocial factors, time and convenience of inhaled therapy, and treatment beliefs. Additional research is clearly needed to clarify the contributors and to determine which interventions and technological advances will enhance adherence to inhaled therapies in patients with cystic fibrosis. Nurses and allied health professionals are ideally positioned to assist patients and families with adherence to inhaled therapies through monitoring, communication, and education about the available therapies and their proper use. This review briefly summarizes the available evidence about contributors to nonadherence, potential interventions, novel delivery devices for inhaled therapies, and opportunities for additional research.

Adherence to pancreatic enzyme supplementation in adolescents with cystic fibrosis

PURPOSE

Levels of adherence to pancreatic enzyme supplementation were investigated in Atlantic Canada adolescents with cystic fibrosis (CF).

METHODS

Participants were recruited from CF clinics at the Izaak Walton Killam Health Centre in Halifax, Nova Scotia, and the Janeway Children's Health & Rehabilitation Centre in St. John's, Newfoundland and Labrador. Self-report questionnaires were mailed to potential participants (n=51) by clinic staff and completed surveys (n=9) were mailed to the principal investigator.

RESULTS

Nine adolescents (mean age 15.2 ± 1.9 years) participated in the study. The adherence survey indicated that the majority perceived themselves to be adherent to taking enzymes with meals (67%), but only 44% perceived themselves to be adherent to taking enzymes with snacks. Recorded amounts of enzymes, taken over three days, indicated that 67% of participants were actually adherent to taking enzymes with meals and 56% with snacks. Including those who correctly predicted non-adherence, 56% and 44% of participants accurately predicted their adherence to taking enzymes with meals and snacks, respectively.

CONCLUSIONS

Adherence rates in the literature vary because of differences in definition and measurement. In the CF population, adherence has been shown to have a positive effect on quality of life. Results for this small group of patients suggest that Atlantic Canada adolescents with CF are able to estimate correctly their adherence to taking pancreatic enzymes, but definite conclusions cannot be made because of the small number of respondents.

Development, validation, and implementation of a questionnaire assessing disease knowledge and understanding in adult cystic fibrosis patients

BACKGROUND

The number of adults living with cystic fibrosis (CF) is increasing, necessitating an assessment of knowledge in this growing population.

METHODS

A questionnaire assessing CF knowledge was completed by 100 CF patients (median age: 26.0 years, range 17-49 years; median FEV₁: 57.0% predicted, range 20-127% predicted). Level of knowledge was correlated with clinical and sociodemographic characteristics.

RESULTS

Questionnaire validation showed acceptable internal consistency (α=0.75) and test-retest reliability (0.94). Patients had fair overall understanding of CF (mean=72.4%, SD=13.1), with greater knowledge of lung and gastrointestinal topics (mean=81.6%, SD=11.6) than reproduction and genetics topics (mean=57.9%, SD=24.1). Females and those with post-secondary education scored significantly higher (p<0.05).

CONCLUSIONS

This study validated a questionnaire that can be utilized to assess CF knowledge. Although CF patients understand most aspects of their disease, knowledge deficits are common - particularly regarding genetics and reproduction - and should be considered when developing CF education programs.

Depressive symptoms in children with cystic fibrosis and parents and its effects on adherence to airway clearance

BACKGROUND

Little is currently known about the co-morbidity of depression and cystic fibrosis (CF) and there is currently no empirical research on the effects of depressive symptoms on adherence in children and adolescents with CF. The primary aim of this study was to evaluate the extent of depressive symptoms in children and adolescents with CF and their parents, and determine whether depressive symptoms in the child and/or parent was associated with adherence to airway clearance. We also evaluated whether children's perceptions of relational security with a parent were associated with adherence to airway clearance.

METHODS

Participants included 39 children with CF ages 7-17 years and their primary caregivers. Depressive symptoms were measured with the Children's Depression Inventory (CDI) and the Center for Epidemiological Studies-Depression Scale (CES-D). The Relatedness Questionnaire assessed the quality of parent-child relational security. Adherence to airway clearance was measured using the daily phone diary (DPD), an empirically validated adherence measure for youth with CF.

RESULTS

Rates of depressive symptoms were elevated in children with CF and their parents (29% for children; 35% for mothers; 23% for fathers). Child depressive symptoms were significantly associated with lower rates of adherence to airway clearance, after controlling for demographic variables (r = -0.34, P = 0.02). Child depressive symptoms were associated with worse perceptions of parental relationships (t(35) = 3.2; P = 0.002) and the quality of this relationship was also related to worse adherence (r = 0.42, P = 0.005).

CONCLUSIONS

A large percentage of youth with CF and their parents reported elevated symptoms of depression. Children scoring in the depressed range on a standardized screening measure and those with less secure parent-child relationships were at greatest risk for poor adherence. Thus, depressive symptoms and family relationships are appropriate targets for adherence promotion interventions, which may ultimately improve health outcomes.

Improving Communication Between Patients and Providers Using Health Information Technology and Other Quality Improvement Strategies: Focus on Low-Income Children

Effective communication between providers and patients has been linked to improved outcomes. Previous reviews of quality improvement strategies, including health information technology (health IT), have not focused on the needs of low-income children. The authors conducted a systematic review of the literature on studies of communication surrounding the care of low-income children, with an emphasis on interventions and health IT.The search yielded six studies that focused on low-income children; three of the studies used health IT. Key informant interviews provided insight to the current use of health IT for provider—patient communication in geographically diverse, underresourced settings.The authors identify gaps between existing literature and clinical practice. Future research should focus on the specific impact of health IT in pediatric medicine, particularly in underresourced and safety net settings. These efforts should focus on the use of technological innovations to improve care for low-income children and their families.

Identifying barriers to treatment adherence and related attitudinal patterns in adolescents with cystic fibrosis

INTRODUCTION

The treatment of cystic fibrosis (CF) is directed toward correction of organ dysfunction and relief of symptoms resulting from the disease. Lack of adherence to daily treatment regimens may have substantial short-term and long-term effects on patients with CF. In this study, we attempted to identify barriers to treatment adherence which could be predicted by objective measures and explore ways to improve adherence in adolescents with CF.

METHODS

A questionnaire was given to patients 12.0-20.9 years of age, designed with focus on specific barriers to adhering to treatment plan and related attitudinal patterns. Observational and analytical results were collected.

RESULTS

We obtained questionnaires and objective health data for 60 respondents. The most commonly identified barriers to adherence were forgetting or losing medications (32/60) and being too busy (23/60). Attitudinal patterns that played a significant role for nonadherence included unintentional forgetting (40/60), feeling that following CF treatments resulted in less freedom in their lives (30/60), and believing it is acceptable to miss a treatment every few days (18/60) or to miss treatments when busy (18/60).

DISCUSSION

There were a few statistically significant differences of adherence patterns between demographic subgroups in our study. Males were more likely to agree that it is acceptable to miss doses if they are made up with extra doses later (24% vs. 3%, P = 0.04). Patients who perceived themselves to be less healthy agreed more to statements of limited freedom, nonsympathetic medical providers, and difficulty adhering during times of decreased symptoms. This highlights an unexpected risk: as CF progresses and patients perceive themselves to be less healthy, they may become less likely to be adherent during the periods they are feeling the best, while at the same time becoming less likely to perceive empathy from their physicians.

CONCLUSIONS

Survey results describe a variety of beliefs and attitudinal patterns which contribute to nonadherence in CF treatment, especially relating to time management. While patients largely understood the importance of treatments to their health, predictors of risky behaviors could lead to targeted interventions by CF centers to address these challenges and improve adherence.

Motivational interviewing for adherence problems in cystic fibrosis

This review focuses on adherence in cystic fibrosis (CF), and the factors known to influence it. In particular, it discusses the importance of effective communication in clinical settings and considers the evidence for the effectiveness of motivational interviewing (MI), to increase adaptation and adherence in physical health and CF. The review also contains an overview of the key concepts of MI, its' practice in medical settings and recommendations on how to adopt MI techniques in the routine care of people with CF.

Cell phone intervention to improve adherence: cystic fibrosis care team, patient, and parent perspectives

BACKGROUND

Treatment regimens for patients with cystic fibrosis (CF) are time-consuming and complex, resulting in consistently low adherence rates. To date, few studies have evaluated innovative technologies to improve adherence in this population. Current infection control guidelines for patients with CF seek to minimize patient-to-patient transmission of potential pathogens. Thus, interventions must avoid face-to-face contact and be delivered individually, limiting opportunities for peer support. This study aimed to develop and assess a web-enabled cell phone, CFFONE, designed to provide CF information and social support to improve adherence in adolescents with CF.

METHODS

The acceptability, feasibility, and utility of CFFONE were evaluated with health care professionals (n = 17) adolescents with CF aged 11-18 years old (n = 12), adults with CF aged 21-36 years old (n = 6), parents of adolescents with CF (n = 12), and technology experts (n = 8). Adolescents also tested a prototype of CFFONE (n = 9). Qualitative and quantitative data were collected.

RESULTS

Focus group data with health care professionals indicated a need for this intervention, and indicated that CFFONE would be likely to improve knowledge and social support, and somewhat likely to improve adherence. Adolescent, adults, and parents all rated CFFONE as likely to improve adherence. Technology experts rated the prototype design and format as appropriate.

CONCLUSIONS

The current study provided some support from key stakeholders for this intervention to improve adherence in adolescents with CF. Next steps include a multi-center trial of the efficacy and safety of CFFONE.

Nutrition Knowledge and Confidence Levels of Parents of Children With Cystic Fibrosis

Optimal growth and nutrition status predict better lung function and longevity for children with cystic fibrosis (CF). Daily nutrition therapy for children with CF requires adequate food resources, parental knowledge of nutrition and behavior management, and confidence in one’s ability to apply the skills. The Mountain West Cystic Fibrosis Consortium Questionnaire (MWCFC-Q) was designed to identify educational intervention targets to improve the growth and nutrition of children with CF. Parents of children with CF returned 305 anonymous MWCFC-Qs. Data analyzed included household food security, knowledge of nutrition and general CF therapies, and self-confidence in one’s ability to manage components of CF care. Factors associated with food insecurity were reported by 26.3% of respondents. The median accuracy for questions regarding nutrient content of commonly used foods was 71.4% and 57.9% for CF nutrition therapy. Parents’ self-confidence in overall CF management was relatively high at a mean value 8.28 ± 1.22 of 10 possible. However, mean self-confidence in the CF nutrition domain was significantly less than mean self-confidence for the CF-related tasks domain, which included chest physiotherapy and medication administration (7.75 ± 1.56, 8.62 ± 1.24, P < .001, respectively). Parental knowledge of nutrition for CF and confidence in the application of this knowledge can improve the growth and nutrition status of children with CF. Identification of food security issues may enable health care professionals to adjust nutrition interventions and direct families to appropriate food resources. The MWCFC-Q could be useful for designing and testing educational interventions for nutrition management of CF.

Physician behavior in the care of pediatric chronic illness: association with health outcomes and treatment adherence

OBJECTIVE

Physician behavior is an important but understudied influence on child and parental adherence to medical treatment.

METHOD

To address this need, research was reviewed in the following topic areas: child and adolescent perceptions of physicians' behavior in pediatric chronic illness management, parental perceptions of physicians' behavior in pediatric chronic illness management; physicians' adherence to guidelines for pediatric chronic illness management; physicians' communication of information concerning pediatric chronic illness treatment; the relationship of physician behavior to treatment adherence; and interventions to enhance physicians' management of pediatric chronic illness.

RESULTS

Findings underscore discrepancies between the needs of parents and adolescents and physician behavior as well as inconsistencies in physician behavior, including adherence to practice guidelines, which may limit children's adherence to medical treatment. However, results of interventions designed to enhance physicians' management of pediatric asthma have been promising.

CONCLUSIONS

Future research should be guided by a comprehensive model of physician behavior in chronic illness management that considers contextual determinants (e.g., culture and socioeconomic status), identifies clinically relevant targets for intervention, and documents the impact on health outcomes. Approaches to chronic illness management that involve physicians in active communication, support, and decision making with children with chronic illness and their parents should be developed and evaluated.

Genetic and non-genetic determinants of outcomes in cystic fibrosis

The treatment of cystic fibrosis has improved significantly over the past three decades. Median survival has improved by decades and is now estimated to be 37 years. Many factors contribute to improvements in disease severity and outcome. This paper reviews the current evidence of three groups of important factors: genetic, environmental and healthcare related.

Adherence to treatment in adolescents with cystic fibrosis: the role of illness perceptions and treatment beliefs

OBJECTIVES

This study was conducted to explore the relationships between illness perceptions, emotional representations, treatment beliefs and reported adherence in adolescents with cystic fibrosis (CF).

METHODS

Thirty-eight adolescents completed questionnaires assessing their perceptions of CF, beliefs about prescribed treatments and reported adherence to chest physiotherapy, enzyme supplements, and antibiotics.

RESULTS

Reported non-adherence to chest physiotherapy was associated with the way in which patients judged their personal need for treatment relative to their concerns about potential adverse effects. Patients reported strong doubts about the necessity of chest physiotherapy. Reported non-adherence to antibiotics was related to doubts about the necessity of antibiotics, believing that CF is not amenable to treatment control. Despite these beliefs about treatment, participants perceived CF as a chronic condition.

CONCLUSIONS

The findings provide preliminary support for the self-regulatory model, using the necessity-concerns framework to operationalize treatment beliefs, in explaining adherence to treatment in adolescents with CF.

Adherence and psychopathology in children and adolescents with cystic fibrosis

BACKGROUND

The striking increase in the lifespan of individuals with cystic fibrosis (CF) has largely been attributed to the dramatic improvements in treatment regimens. These treatments are time intensive and may interfere with healthy development and family function. The objective of this study was to investigate the association between psychopathology and treatment adherence in children and adolescents with CF.

METHODS

Structured psychiatric interviews were performed on 52 patients with CF. Additional information on family function and youth behaviors were also collected. Youth and parent reports of adherence to the CF treatments were obtained and compared with the CF teams' records.

RESULTS

The mean overall adherence to the CF teams' recommendations was 77-81% for the child and parent reports, respectively. Children with anxiety disorders and families who were more cohesive showed significantly higher rates of adherence to the CF treatments. In addition, children in families with a balance of structure and flexibility also report higher levels of adherence to the CF treatments.

CONCLUSIONS

Anxiety disorders in children with CF may be associated with increased adherence to the numerous CF treatment regimens. In addition, family patterns that are cohesive and balanced are better able to incorporate the CF treatments into family life.

Compliance in cystic fibrosis: an examination of infection control guidelines

The goal of this research was to begin the process of evaluating acceptability of infection control (IC) recommendations to CF patients and their families, determine whether compliance with IC guidelines differs from compliance with traditional CF medical treatment with respect to the variables predictive of compliance, and assess which patients are most likely to comply with IC recommendations. Participants were recruited during routine outpatient visits at a regional CF center located in a pediatric hospital. The sample included 44 child and adolescent patients, aged 9-18 years and their guardian, and 27 adult patients. All patients completed questionnaires and interviews. Results of this preliminary study suggest that many individuals with CF are unaware of or unconcerned with the risks involved in infection transmission via social contact with other CF patients. Further, most participants reported that they could benefit from friendships with other CF patients. Health belief variables were found to be predictive of compliance with both IC guidelines and traditional medical treatments in the adult and parent sample, but not in the child sample. Possible explanations for study findings are discussed and recommendations for future research on IC compliance are highlighted.

Psychological factors affecting disease activity in children and adolescents with cystic fibrosis: medical adherence as a mediator

PURPOSE OF REVIEW

It is likely that nonadherence to treatment is one mediator of the effect of psychological factors on disease activity and course of cystic fibrosis. Nonadherence is a significant problem for patients with the disease. This review assesses adherence to multiple treatment components in cystic fibrosis and identifies factors associated with poor adherence. Based on this assessment, strategies aimed at enhancing adherence will be discussed.

RECENT FINDINGS

Adherence to treatment occurs less than 50% of the time in patients with cystic fibrosis, indicating poor adherence, which is particularly common in adolescents. Factors associated with poor adherence include psychiatric, psychological and emotional factors; family issues; and treatment-related problems. Recently, more information is being gathered regarding processes related to poor adherence.

SUMMARY

Psychological factors affecting physical conditions frequently occur in children with cystic fibrosis. Therefore, patients need to be routinely screened for coexisting psychosocial issues and treatment adherence problems. Adherence needs to be examined according to the specific treatment component, and with an understanding of factors that make adherence difficult for patients and families. This will enable healthcare teams to target individualized strategies to counteract nonadherence, with emphasis on the role of psychological and psychosocial factors.

Caregiver recall of treatment recommendations in juvenile idiopathic arthritis

OBJECTIVE

Health care providers in juvenile idiopathic arthritis (JIA) might refer to caregivers' self-report of children's treatment-related behaviors to assist in clinical decisions. However, caregivers may believe that they are adhering to treatment even though they have a different understanding of recommendations than that intended by the medical team. We examined whether caregiver recall of children's JIA treatment matched actual recommendations at baseline and 3, 6, 9, and 12 months.

METHODS

A total of 235 primary caregivers were recruited from rheumatology clinics at 2 pediatric university-based teaching hospitals in Canada. Using the Parent Adherence Report Questionnaire, caregivers indicated whether their child was prescribed medications and/or exercises. Medical charts were reviewed to determine the prescribed treatment. Level of agreement between both sets of data was then examined.

RESULTS

A total of 175 caregivers provided complete data. Mean age of the children was 10.2 years (68.6% girls); 44.6% were diagnosed with oligoarthritis. Kappa coefficients for medication represented substantial to almost perfect agreement beyond chance, with better levels of agreement at 12 months (kappa = 0.81, 95% confidence interval [95% CI] 0.68, 0.94) than at baseline (kappa = 0.61, 95% CI 0.47, 0.76). Kappa coefficients for exercise represented slight to moderate agreement beyond chance, with better agreement at 12 months (kappa = 0.44, 95% CI 0.24, 0.63) than at baseline (kappa = 0.27, 95% CI 0.08, 0.47).

CONCLUSION

Weaker agreement for the exercise regimen raises concern that caregivers may pay less attention to exercise recommendations or that these recommendations may not be easily understood.

Meal patterns, dietary fat intake and pancreatic enzyme use in preadolescent children with cystic fibrosis

OBJECTIVES

To describe the usual pattern of intake and adherence to cystic fibrosis (CF) food and pancreatic enzyme replacement therapy (PERT) recommendations in preadolescent children with CF and pancreatic insufficiency (PI).

METHODS

Children, 8 to 11 years old, with CF and PI were assessed for PERT adherence ratio (number taken/number prescribed per day) and energy and fat intake for 7 days (weighed food records), adherence to PERT and dietary recommendations, pulmonary function, growth status and stool fat malabsorption. Using the PERT adherence ratio, children were divided into good (> or =80%), moderate (60% to 79%) and poor (<60%) adherence groups.

RESULTS

Of the 75 children (age, 9.3 +/- 1.0 years; forced expiratory volume in 1 s, 95 +/- 14% predicted), 61% consumed less than 120% of energy intake, and 72% consumed less than 40% of calories as fat recommended for CF. Using the PERT adherence ratio (mean +/- SD, 75 +/- 14%), 29%, 61% and 9% of children had good, moderate and poor adherence, respectively. Better adherence to PERT was significantly associated with missing fewer snacks, higher energy intake, greater fat content of snacks and poorer growth status. About 85% of the children were in the 500 to 4000 lipase unit (LU) of PERT (LU/g fat per day) and 500 to 2500 LU/kg per body weight per meal guidelines, whereas only 58% to 68% were within the guidelines for snacks. Eleven percent of children always took PERT at an inappropriate time after meals.

CONCLUSIONS

Most preadolescent children with CF and PI did not meet dietary recommendations. Future educational and behavioral interventions focused on increasing PERT adherence with snacks, fat content of meals and snacks, appropriate timing of enzymes and adjustment of PERT and meal fat content are suggested.

Condition-related knowledge among children with spina bifida: longitudinal changes and predictors

OBJECTIVE

To examine changes in three domains of condition-related knowledge among youth with spina bifida and to examine the utility of youth cognitive ability level and condition severity as predictors of knowledge change.

METHODS

Seventy preadolescents with spina bifida completed a 12-item questionnaire assessing knowledge of spina bifida at three time points during middle childhood and early adolescence. Specific domains of knowledge assessed included (a) etiology of spina bifida, (b) functional status, and (c) shunt functioning (completed by participants with shunted hydrocephalus only).

RESULTS

Findings revealed gains in accuracy of knowledge on 6 of 12 items; however, neither children's cognitive ability level nor condition severity predicted changes in knowledge over time. Most condition domains were characterized by low-to-moderate levels of knowledge across time.

CONCLUSIONS

Although significant gains were evident in children's condition-related knowledge, at Time 3, many participants still failed to understand basic information about the etiology of their condition or major functional issues associated with spina bifida. Additional education about catheterization and shunt malfunction are two domains that may be of particular clinical significance.

Barriers to treatment adherence for children with cystic fibrosis and asthma: what gets in the way?

OBJECTIVES

The purpose of this study was to systematically identify barriers to treatment adherence for children with cystic fibrosis (CF) and asthma, as well as to examine the relationship between the number of barriers and adherence.

METHODS

Participants included 73 children with CF or asthma and their parents. The mean age of the sample was 9.9 years, and 58% were males.

RESULTS

Results indicated that barriers were quite similar by illness and informant (e.g., parent and child) for the same treatments, but unique barriers were identified for disease-specific treatments. Frequently mentioned barriers across diseases included forgetting, oppositional behaviors, and difficulties with time management. Trends were identified between adherence and barriers, suggesting that a greater number of barriers were related to poorer adherence.

CONCLUSION

Overall, this study provided evidence that patients and their parents experience specific barriers within the context of their own illness and highlights the need for disease-specific measures and interventions.

Adherence to treatment in children and adolescent patients with cystic fibrosis

PURPOSE

The purpose of this study was to monitor medication adherence in cystic fibrosis (CF) patients and its correlation with disease severity and patient age.

METHODS

Children less than 12 years of age (group 1) and adolescents 12 years of age and older (group 2) were recruited from the University of Michigan CF Center. The study duration was 3 months. A total of 22 patients per group were enrolled. Adherence to ADEKs, an oral multivitamin, and dornase alfa, a nebulized mucolytic medication, was monitored. Adherence to ADEKs was monitored by using the Medication Event Monitoring System (MEMS) SmartCaps (APREX, AARDx, Inc., Union City, California). Dornase alfa adherence rate was monitored by counting empty medication vials.

RESULTS

Thirty-three patients completed the study, 15 patients in group 1 and 18 patients in group 2. The overall mean adherence rates for ADEKs and dornase alfa were (+/- SD) 63.6% +/- 24.0% and 66.5% +/- 31.2%, respectively. The median ADEKs and dornase alfa adherence rate for group 1 was 84.6% and 79.1%, respectively (p = .08); and for group 2 was 56.7% vs. 78.4%, respectively (p = .07). There was a trend toward significance, suggesting that the adherence rate for ADEKs was higher than for dornase alfa (p = .08) in group 1. Group 2 showed a trend toward adherence to dornase alfa than to ADEKs (p = .07). There was a trend for ADEKs adherence between groups 1 and 2 (p = .09), but not for dornase alfa (p = .93).

CONCLUSION

Parental supervision and disease severity are likely to play a major role in adherence to medical management. Partnership with patients and families about the treatment plan might be important for improving adherence rate. The MEMS SmartCaps is an electronic monitoring technology that should be used to measure drug adherence objectively both in further larger clinical trials and in the outpatient setting.

Economic evaluation of Tobramycin nebuliser solution in cystic fibrosis

BACKGROUND

The cost effectiveness of inhaled TOBIR tobramycin nebuliser solution (TNS) in CF and chronic pulmonary Pseudomonas aeruginosa infection has been shown in US but not in European studies.

METHODS

An economic evaluation of TNS was undertaken in children and adults. Lung function and resource utilisation were recorded for 24 months before and during TNS therapy. Interventions were costed.

RESULTS

Forty-one patients received TNS; 30 of them matched with a paired control on usual therapy. TNS cases received more inhaled and IV antibiotics in the year before TNS than controls, and were hospitalised more. In the TNS treated group mean days in hospital before and after (change) were 32.0, 24.2 (-7.8); days on IV antibiotics 55.4, 38.9 (-16.4); total cost 22,102 pounds, 28,394 pounds (+ 6292 pounds), composed of cost of TNS 0 pounds, 10,010 pounds (+ 10,010 pounds), cost of hospitalisation 10,897 pounds, 8552 pounds (- 2345 pounds), cost of drugs 11,205 pounds, 9832 pounds (- 1374 pounds). In 19 patients aged < 18 the change in days hospitalised was -10.7 and days on IVs -20.2. Incremental cost was 3830 pounds.

CONCLUSIONS

TNS was associated with clinically and socially important reductions of hospital attendances and parenteral antibiotics. This would improve patients' quality of life and reduce interference with work and schooling. Its maximal acquisition cost of 10,010 pounds may be reduced by delays in prescribing and dispensing, and was offset by savings of approximately 3500-6200 pounds.

Racial Differences in Lipid-Lowering Agent Use in Medicaid Patients With Cardiovascular Disease

BACKGROUND

Racial differences in chronic cardiovascular disease (CVD) outcomes are well described, whereas less is known about the process of CVD preventive care and its potential contribution to disparate outcomes.

OBJECTIVE

The objective of this study was to examine the association between race and 1) prior use of a lipid-lowering agent (LLA), 2) LLA initiation, and 3) LLA discontinuation among individuals with an incident medical claim for CVD.

RESEARCH DESIGN

Retrospective claims analysis.

SUBJECTS

We studied continuously enrolled, fee-for-service Medicaid recipients <65 with a new medical claim for 1 of 15 CVD-related diagnoses or procedures from 1993 to 1998 (n = 14,833).

MEASURES

Pharmacy claims history reflecting previous, new, and ongoing LLA use were reviewed for the 24-month period around a new CVD claim. Multivariable logistic regression assessed the independent effect of minority status on new and ongoing LLA use controlling for clinical and demographic characteristics.

RESULTS

A total of 3924 (26.4%) individuals submitted LLA pharmacy claims. A total of 3668 of 4668 (78.6%) previous or new users obtained > or =1 refill. Minorities were less likely to have previously used LLA (adjusted odds ratio [AOR], 0.64; 95% confidence interval [CI], 0.58-0.70), to receive a new prescription (AOR, 0.62; 95% CI, 0.54-0.71), or to continue use, as evidenced by subsequent refill claims (AOR, 0.74; 95% CI, 0.62-0.87).

CONCLUSIONS

Publicly insured minorities with prescription coverage benefit less often from preventive care before or after a CVD diagnosis, resulting, in part, from providers' failure to initiate therapy and patients' failure to continue it. To reduce widening disparities in cardiovascular outcomes, strategies that target LLA underuse by minorities throughout the process of care are needed.

Association of Observed Family Relationship Quality and Problem-Solving Skills with Treatment Adherence in Older Children and Adolescents with Cystic Fibrosis

OBJECTIVE

To examine associations between observations of the quality of family relationships and problem-solving skills and reported adherence to medical treatments for older children and adolescents with cystic fibrosis (CF).

METHODS

Reports of adherence were obtained from 96 youth with CF and their parents recruited from six CF centers in the Midwest and southeastern United States. Videotaped observations of family discussions of high conflict issues were used to assess quality of relationships and problem-solving skills.

RESULTS

Hierarchical regression analyses indicated that observed family relationship quality (RQ) was related to parent and child reports of adherence to airway clearance and aerosolized medications after controlling for demographic variables and illness severity. Observed family problem solving was not a significant predictor after controlling for RQ.

CONCLUSIONS

Older children and adolescents who come from families experiencing unhappy and conflicted relationships may be at greater risk for poor adherence to treatments; thus, family relationships are appropriate targets for interventions aimed at improving adherence.

Increasing adherence to cystic fibrosis treatment: a systematic review of behavioral techniques

Cystic fibrosis is a fatal chronic illness that primarily affects the respiratory and pancreatic systems. Treatment includes daily medications, enzyme and vitamin supplements, a high-calorie diet, and airway clearance sessions (e.g., chest physiotherapy, exercise). Although this regimen is essential to longevity, families have difficulty adhering to the multiple treatment components. Adherence is especially problematic with diet, chest physiotherapy, and exercise. Studies utilizing behavioral techniques to increase adherence to cystic fibrosis treatment components have been conducted with varying results. In this paper, a critical review of these treatment studies and suggestions for future work are presented.

Measuring self-care independence in children with cystic fibrosis: the Self-Care Independence Scale (SCIS)

We describe the development and psychometric properties of a survey tool designed to evaluate children's level of independence in their cystic fibrosis (CF) treatment. Children's self-care autonomy is important to measure and may have a direct effect on children's active involvement in their treatment and their adherence. Existing instruments that evaluate children's independence in their CF treatment fail to yield practical information that can help research and patient management. The Self-Care Independence Scale (SCIS) is a 44-item questionnaire that is completed by parents. The SCIS was completed by the parents of 76 patients with CF (ages 4-17 years). Youths completed two structured interviews, which screened patients for average or higher cognitive functioning (an inclusion criterion) and measured their CF treatment knowledge. Parents completed two other self-report questionnaires. Results indicated that the SCIS has acceptable internal consistency and good test-retest reliability. The construct validity of the SCIS was supported by positive correlations between patient age, number of years since diagnosis, and SCIS total scores. The concurrent validity of the SCIS was supported by correlations between a measure of nonillness-specific dependence and a measure of patient self-care knowledge. Children's SCIS total scores per age group are presented. This study supports the SCIS as a psychometrically sound measure of self-care independence in CF. This measure has several uses. For example, the SCIS may be a screening tool for adolescents who are preparing to transition to adult CF centers and who will need to assume more independence in their self-care. The SCIS may also be used to evaluate educational programs that promote self-care knowledge and skill in children with CF.

Median household income and mortality rate in cystic fibrosis

CONTEXT

Poverty has been shown to be a determinant of health outcomes in many epidemiologic studies.

OBJECTIVE

The goal of this study was to assess the association between household income and the mortality rate in cystic fibrosis (CF) patients.

DESIGN, SETTING, AND PATIENTS

We selected white patients diagnosed before 18 years old and having 1 or more records in the Cystic Fibrosis Foundation Patient Registry since 1991. These 23 817 patients were linked to the 1990 US Census by their zip code of residence. The median household income was adjusted for state level differences in cost of living using the 1998 Consumer Price Index.

INTERVENTIONS

None.

MAIN OUTCOME MEASURES

We examined the association between categories of the median household income and the mortality rate. We examined the association between income categories and age-related changes in pulmonary function and body weight as well as specific nutritional and pulmonary therapies.

RESULTS

We found a strong monotonic association between the median household income and the mortality rate. The test of trend was significant, and this effect was maintained after adjustment for a variety of patient and disease characteristics. When the lowest income category (<20 000 dollars) is compared with the highest (> or = 50 000 dollars), the adjusted incidence rates were 90.3 and 62.6 per 10 000 person years, respectively; this represents a 44% increased risk of death in the lowest income category. Patients living in areas with lower median household income also had consistently lower pulmonary function and body weight than did those living in higher income areas. The differences in weight percentiles and forced expiratory volume in 1 second are substantial in magnitude, they appear at an early age, and they persist into adulthood for these CF patients. Prescribed nutritional treatments and screening for CF-related diabetes were significantly higher among patients living in areas with lower median household income. Prescription of deoxyribonuclease and inhaled tobramycin was not significantly associated with median household income.

CONCLUSION

There was a strong association between lower household income and increased mortality rate among CF patients. Additional understanding of this effect will require more complete and direct measurement of socioeconomic status and a better understanding of treatment adherence, local environmental conditions, and especially the care of CF patients during the early years of life.