Hyekyun Rhee

Prevalence and predictors of headaches in US adolescents.

Objectives.—To examine the prevalence of headaches among US adolescents; to explore the differences in prevalence by sex, race, and age; and to test the nature of the association between headaches and depression, self‐esteem, and insomnia.

Risk factors of back pain frequency in schoolchildren: a search for explanations to a public health problem

This study examined physical, behavioral and social factors associated with schoolchildrens back pain. Factors associated with back pain were also identified using a stepwise regression method. The study was based on a self‐administered questionnaire survey of a random national sample of 2173 Icelandic 11–12 and 15–16‐y‐old schoolchildren. It found that older subjects tended to report back pain more frequently than younger children. Back pain showed significant associations with different aspects of physical condition such as chronic health conditions, tiredness and physical fitness. A number of behavioral factors including participation in sports, television viewing, eating habits and smoking also had a relationship with back pain. Finally, children with lower social support were more likely to experience back pain.

Patterns of physical symptoms and relationships with psychosocial factors in adolescents.

Objectives: Physical symptoms are common in otherwise healthy adolescents. This study sought to identify meaningful patterns of multiple physical symptoms and to examine relationships between the patterns and psychosocial factors. One-year stability of symptom patterns and factors contributing to stability were also examined. Methods: This secondary data analysis used longitudinal data from a nationally representative sample of adolescents in grades 7 through 12 (n = 9,141) who participated in the National Longitudinal Study of Adolescent Health during 1994 to 1996. Ten selected physical symptoms (i.e., headache, stomachaches, fatigue) were used to construct clusters. Each cluster was compared in regard to demographic factors, psychological adjustment and interpersonal relationships. Results: K-means in combination with Ward method clustered the sample into 4 groups according to the overall patterns of the 10 symptoms: nonsymptom (41%), moderate symptom (38%), high symptom (19%) and extreme symptom (2%). Adolescents in higher symptom clusters were more likely to be girls, nonwhites, or from families on welfare and reported high depressive symptoms, low self-esteem, and poor perceptions of parental affection and friendship quality. About 16% in clusters with lower symptom patterns develop somatizing patterns in Wave II; new onset was predicted by gender, younger age, and depressive symptoms. Conclusion: Symptom patterns characterized by overall high frequencies of multiple symptoms may indicate somatization. This study also suggests that adolescents with a somatizing tendency are more likely to experience psychological and interpersonal difficulties, and girls and younger adolescents are more vulnerable. Targeted prevention programs are needed for these vulnerable individuals by addressing their psychosocial functioning. Add Health = the National Longitudinal Study of Adolescent Health; CES-D = the Center for Epidemiological Studies-Depression Scale; SES = socioeconomic status; ANOVA = analysis of variance; OR = odds ratio; 95CI = 95% confidence interval; NS = nonsymptom; MS = moderate symptom; HS = high symptom; ES = extreme symptom.

Effects of a Peer-Led Asthma Self-management Program for Adolescents

OBJECTIVE To evaluate the effectiveness of a peer-led asthma self-management program for adolescents. DESIGN Randomized controlled trial comparing a peer-led asthma program (intervention group) and a conventional adult-led asthma program (control group). Each program was implemented at a full-day camp. SETTING A city and adjacent suburbs in upstate New York. PARTICIPANTS A total of 112 adolescents aged 13 to 17 years with persistent asthma. INTERVENTION A peer-led asthma self-management program implemented at a day camp. MAIN OUTCOME MEASURES The Child Attitude Toward Illness Scale and the Paediatric Asthma Quality of Life Questionnaire were administered at baseline and immediately and 3, 6, and 9 months after the intervention. Spirometry was conducted twice: before and 9 months after the intervention. RESULTS The intervention group reported more positive attitudes at 6 months (mean difference, 4.11; 95% confidence interval [CI], 0.65-7.56) and higher quality of life at 6 months (difference, 11.38; 95% CI, 0.96-21.79) and 9 months (difference, 12.97; 95% CI, 3.46-22.48) than the control group. The intervention was found to be more beneficial to adolescents of male gender or low family income, as shown by greater improvement in positive attitudes toward asthma and quality of life than their counterparts. CONCLUSION An asthma self-management program led by peer leaders is a developmentally appropriate approach that can be effective in assisting adolescents with asthma in improving their attitudes and quality of life, particularly for males and those of low socioeconomic status. TRIAL REGISTRATION clinicaltrials.gov Identifier: NCT01161225.

Physical symptoms in children and adolescents.

This chapter summarizes and critiques research on physical symptoms in children and adolescents from a developmental science perspective. Studies conducted by researchers from various disciplines, primarily after 1990, were identified through searches of MEDLINE, CINAHL, and Psyc INFO. This review focuses on two areas: the prevalence of common physical symptoms—headache, abdominal pain or discomfort, musculoskeletal pain and fatigue—in pediatric populations and the developmental issues associated with these symptom experiences. Developmental factors were organized into two overarching categories, individual and environmental factors. Findings indicate that demographic factors, including age, pubertal development, gender, and race or ethnicity; psychological factors, particularly self-esteem, depression, and anxiety; and behavioral factors have varying relationships to the report of physical symptoms in children and youth. In addition, family and parents, peers, and the broader school and community ecology of children have an influence on physical symptom complaints. There is a need for further studies that are strengthened by the use of developmentally sensitive theoretical frameworks and methodologies that address complicated developmental issues.

Mobile phone-based asthma self-management aid for adolescents (mASMAA): a feasibility study

Purpose Adolescents report high asthma-related morbidity that can be prevented by adequate self-management of the disease. Therefore, there is a need for a developmentally appropriate strategy to promote effective asthma self-management. Mobile phone-based technology is portable, commonly accessible, and well received by adolescents. The purpose of this study was to develop and evaluate the feasibility and acceptability of a comprehensive mobile phone-based asthma self-management aid for adolescents (mASMAA) that was designed to facilitate symptom monitoring, treatment adherence, and adolescent–parent partnership. The system used state-of-the-art natural language-understanding technology that allowed teens to use unconstrained English in their texts, and to self-initiate interactions with the system. Materials and methods mASMAA was developed based on an existing natural dialogue system that supports broad coverage of everyday natural conversation in English. Fifteen adolescent–parent dyads participated in a 2-week trial that involved adolescents’ daily scheduled and unscheduled interactions with mASMAA and parents responding to daily reports on adolescents’ asthma condition automatically generated by mASMAA. Subsequently, four focus groups were conducted to systematically obtain user feedback on the system. Frequency data on the daily usage of mASMAA over the 2-week period were tabulated, and content analysis was conducted for focus group interview data. Results Response rates for daily text messages were 81%–97% in adolescents. The average number of self-initiated messages to mASMAA was 19 per adolescent. Symptoms were the most common topic of teen-initiated messages. Participants concurred that use of mASMAA improved awareness of symptoms and triggers, promoted treatment adherence and sense of control, and facilitated adolescent–parent partnerships. Conclusion This study demonstrates the utility and user acceptability of mASMAA as a potential asthma self-management tool in a selective group of adolescents. Further research is needed to replicate the findings in a large group of adolescents from sociodemographically diverse backgrounds to validate the findings.

Adolescents' Perception of Asthma Symptoms and Health Care Utilization

INTRODUCTION Pediatric asthma is accountable for a substantial use of health care services. The purpose of this study was to systemically examine the extent to which inaccurate perception of asthma symptoms is associated with the use of health care services. METHODS This exploratory study included 126 adolescents with asthma who were between 13 and 20 years of age. Subjects were classified as having inaccurate symptom perception (IG); well-controlled accurate symptom perception (WCA); and poorly controlled accurate symptom perception (PCA). These groups were compared with respect to health care utilization, including emergency department (ED) visits, hospitalization, and office visits and school absenteeism in the past 3 months. RESULTS More adolescents in the IG group had at least one hospitalization compared with adolescents in the PCA or WCA groups (23.1% vs. 11.1% vs. 2.6%, respectively). A similar trend was seen for ED visits. Compared with the WCA group, adolescents in the IG group were nearly nine times more likely to have been hospitalized, 3.4 times more likely to have visited an ED, and four times more likely to have missed school days. DISCUSSION Adolescents with inaccurate symptom perception are more likely to have hospitalizations, ED visits, and missed days from school compared with those who have accurate perceptions. The findings underscore the importance of screening for perceptual accuracy of asthma symptoms and call for interventions promoting accurate symptom assessment in adolescents with asthma to ensure appropriate care.

The Development of an Automated Device for Asthma Monitoring for Adolescents: Methodologic Approach and User Acceptability

Background Many adolescents suffer serious asthma related morbidity that can be prevented by adequate self-management of the disease. The accurate symptom monitoring by patients is the most fundamental antecedent to effective asthma management. Nonetheless, the adequacy and effectiveness of current methods of symptom self-monitoring have been challenged due to the individuals’ fallible symptom perception, poor adherence, and inadequate technique. Recognition of these limitations led to the development of an innovative device that can facilitate continuous and accurate monitoring of asthma symptoms with minimal disruption of daily routines, thus increasing acceptability to adolescents. Objective The objectives of this study were to: (1) describe the development of a novel symptom monitoring device for teenagers (teens), and (2) assess their perspectives on the usability and acceptability of the device. Methods Adolescents (13-17 years old) with and without asthma participated in the evolution of an automated device for asthma monitoring (ADAM), which comprised three phases, including development (Phase 1, n=37), validation/user acceptability (Phase 2, n=84), and post hoc validation (Phase 3, n=10). In Phase 1, symptom algorithms were identified based on the acoustic analysis of raw symptom sounds and programmed into a popular mobile system, the iPod. Phase 2 involved a 7 day trial of ADAM in vivo, and the evaluation of user acceptance using an acceptance survey and individual interviews. ADAM was further modified and enhanced in Phase 3. Results Through ADAM, incoming audio data were digitized and processed in two steps involving the extraction of a sequence of descriptive feature vectors, and the processing of these sequences by a hidden Markov model-based Viterbi decoder to differentiate symptom sounds from background noise. The number and times of detected symptoms were stored and displayed in the device. The sensitivity (true positive) of the updated cough algorithm was 70% (21/30), and, on average, 2 coughs per hour were identified as false positive. ADAM also kept track of the their activity level throughout the day using the mobile system’s built in accelerometer function. Overall, the device was well received by participants who perceived it as attractive, convenient, and helpful. The participants recognized the potential benefits of the device in asthma care, and were eager to use it for their asthma management. Conclusions ADAM can potentially automate daily symptom monitoring with minimal intrusiveness and maximal objectivity. The users’ acceptance of the device based on its recognized convenience, user-friendliness, and usefulness in increasing symptom awareness underscores ADAM’s potential to overcome the issues of symptom monitoring including poor adherence, inadequate technique, and poor symptom perception in adolescents. Further refinement of the algorithm is warranted to improve the accuracy of the device. Future study is also needed to assess the efficacy of the device in promoting self-management and asthma outcomes.

Cost Benefits of a Peer-Led Asthma Self-Management Program for Adolescents

Objective. Frequent use of health-care services associated with pediatric asthma places substantial economic burden on families and society. The purpose of this study is to examine the cost-saving effects of a peer-led program through reduction in health-care utilization in comparison to an adult-led program. Methods. Randomly assigned adolescents (13–17 years) participated in either peer-led (n = 59) or adult-led (n = 53) asthma self-management program. Health-care utilization data were collected at baseline and at 3-, 6-, and 9-months post-intervention. Negative binomial regression models were conducted to examine the effects of the peer-led program on health-care utilization. Net cost savings were estimated based on the differences in program costs and health-care utilization costs between groups. Results. Significant group differences were found in acute office visits and school clinic visits after controlling for race and socioeconomic status. The incidence rate of acute office visits was 80–82% less for the peer-led group during follow-ups. The peer-led group was four to five times more likely to use school clinics due to asthma than the adult-led group during follow-ups. The nonresearch cost of peer-led program per participant was lower than the adult-led program,

Decision-Making Program for Rural Adolescents With Asthma: A Pilot Study

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