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Biomedical subjects

K B Wells

Publications and source records attributed to K B Wells.

At least 19 recordsLinked to original sources
PubMed1995

Prevalence of behavior problems in US children with asthma.

OBJECTIVES: To present national population-based estimates of the prevalence of parent-reported emotional and/or behavioral problems in children with asthma and the relationship of medical comorbidity and asthma severity with behavior problems. DESIGN: Cross-sectional study of the 1988 National Health Interview on Child Health. MAIN OUTCOME MEASURES: Parent responses to a checklist of child health conditions were used to assign school-age children (5 to 17 years old) into one of four groups: children without reported chronic conditions; children with asthma alone; children with asthma and additional reported chronic conditions; and children with the same chronic conditions, but without asthma. Parental responses to the Behavior Problem Index (BPI) were used for construction of an overall BPI score, as well as subscale scores. Cross-tabulation and linear and logistic regression were used to determine the relation of the different condition categories to emotional and/or behavioral problems expressed by relative values of the BPI. RESULTS: Children with asthma and comorbid conditions had a mean BPI score of 7.3, compared with 5.4 for children without chronic conditions, and all subscale scores, except those for antisocial conduct and immature behavior, were significantly elevated. Using logistic regression to control for confounding variables, children with severe asthma alone had nearly three times the odds (odds ratio, 2.96; 95% confidence interval, 1.22 to 7.17) and children with asthma plus comorbid conditions nearly twice the odds (odds ratio, 1.86; 95% confidence interval, 1.20 to 2.90) of children without chronic conditions to have severe behavior problems. CONCLUSIONS: Severe asthma and asthma with medical comorbidity represent significant risk factors for emotional and/or behavioral problems. Clinicians caring for children with asthma and their families should be aware of the relationship between asthma and emotional and/or behavioral problems and anticipate that a substantial number of their patients may have mental health services needs.

Asthma↗
PubMed1995

Quality of care for depressed elderly patients hospitalized in the specialty psychiatric units or general medical wards.

BACKGROUND: Studies to assess quality of care have become increasingly important for research and policy purposes. OBJECTIVE: To evaluate the difference in quality of care between elderly depressed patients hospitalized in specialty psychiatric units and those hospitalized in general medical wards. METHODS: We reviewed retrospectively the medical charts of 2746 patients with depression hospitalized in 297 general medical hospitals in five different states. Quality of care was assessed by clinical review of explicit and implicit information contained in the medical records of patients in specialty psychiatric units (n = 1295) and general medical wards (n = 1451). We also used other secondary data sources to determine postdischarge outcomes. RESULTS: We found that (1) a higher percentage of admissions on the psychiatric units were considered appropriate, (2) overall psychological assessment was better on the psychiatric unit, (3) patients were more likely to receive psychological services on the psychiatric wards but more likely to receive traditional general medical services on medical wards, (4) there were more inpatient general medical complications on the psychiatric wards, and (5) implicit measures of clinical status at discharge were better for those on the psychiatric unit. CONCLUSIONS: Although limited by reliance on medical record abstraction and a retrospective study design, our data indicate that the quality of care for the psychological aspects of the treatment of depression may be better on psychiatric units, while the quality of general medical components of care may be better on general medical wards.

Aged↗
PubMed1995

Personal and psychosocial risk factors for physical and mental health outcomes and course of depression among depressed patients.

This article focuses on personal and psychosocial factors to identify those that predict change in functioning and well-being and clinical course of depression in depressed outpatients over time. Data from 604 depressed patients in The Medical Outcomes Study showed improvements in measures of functioning and well-being associated with patients who were employed, drank less alcohol, and had active coping styles. Better clinical course of depression was associated with patients who had high levels of social support, who had more active and less avoidant coping styles, who were physically active, and who had fewer comorbid chronic conditions. Findings provide some guidance as to what can be done to improve depressed patients' levels of physical and mental health and affect the clinical course of depression.

Adaptation, Psychological↗
PubMed1995

Severity of depression in prepaid and fee-for-service general medical and mental health specialty practices.

This study compares severity of depression for patients of general medical clinicians, psychiatrists, and nonphysician therapists receiving prepaid or fee-for-service care. Cross-sectional severity comparisons were conducted among 715 outpatients with current major depression or dysthymia, by independent assessment. Severity was assessed by counts of current and lifetime depressive symptoms, prognostic and treatment response indicators, and global measures of psychological and physical sickness. Patients of psychiatrists were the most psychologically ill, patients of nonphysician therapists were intermediate, and general medical patients were least ill; but even in the general medical sector, depression severity was at least ill; but even in the general medical sector, depression severity was at least moderate. No differences in global physical sickness by specialty remained after demographic adjustment. General medical patients whose depression had been detected were only slightly sicker than undetected cases. Type of payment was not consistently related to either psychological or physical aspects of sickness, and payment did not interact with specialty. Mental health specialists, especially psychiatrists, encountered more severely depressed patients, but patients in all sectors were sick enough to warrant treatment. Even undetected patients in the general medical sector were relatively sick, raising questions about gatekeeper policies. There was no evidence of a greater severity gradient by specialty in prepaid care. Because payment was unrelated to severity, treatment implications are similar under prepaid and fee-for-service care. Implications for clinical practice, public policy, and outcomes research design are discussed.

Adult↗
PubMed1995

Care for depression in a changing environment.

The U.S. health care system is quickly changing, but is it moving in the right direction? Focusing on care for clinical depression as a test case, this paper summarizes our previously published findings on the effects of various payment strategies, managed care, and primary care gatekeepers on the outcomes and costs for the treatment of mental health conditions. We then synthesize the policy implications of these findings for achieving value of care, lower costs, and good health outcomes.

Cost Control↗
PubMed1994

Long-term functioning and well-being outcomes associated with physical activity and exercise in patients with chronic conditions in the Medical Outcomes Study.

This study was carried out to determine whether levels of physical activity of patients with various chronic diseases are associated with subsequent functioning and well-being. It was an observational 2-year longitudinal design. The setting was offices of medical and mental health practices within health maintenance organizations, large multispecialty groups, and solo practices or small single-specialty group practices in three U.S. cities. Included in the study were 1758 adult patients with one or more of the following: diabetes, hypertension, congestive heart failure, recent myocardial infarction, depressive symptoms, or current depressive disorder. Outcome measures included physical, role, and functioning; energy/fatigue; pain intensity; sleep problems; depressed affect, anxiety, positive affect, and overall psychological distress/well-being; health distress; and current health perceptions. Cross-sectional (base-line), 2-year endpoint, and change score relationships were evaluated between baseline levels of physical activity and each outcome, controlling for chronic conditions, comorbidity, smoking, alcohol use, overweight, self-reported adherence, and other patient and study characteristics. Higher baseline levels of exercise were uniquely associated with better functioning and well-being at baseline and 2 years later for some measures. The magnitude of the differences varied by disease group, but tended to be between 0.17 and 0.39 of the baseline SD. Greater levels of exercise are associated with feeling and functioning better for patients with chronic conditions over a 2-year period, suggesting that this is a fruitful area for further study using controlled interventions.

Activities of Daily Living↗
PubMed1994

Emotional and behavioral problems and severe academic delays among sheltered homeless children in Los Angeles County.

OBJECTIVES: Few studies have estimated the extent of specific emotional, behavioral, and academic problems among sheltered homeless children. The objectives of this study were to describe such problems, identify those children with the problems, and evaluate the relationship between child problems and use of physical and mental health services. METHODS: From February through May 1991, 169 school-age children and their parents living in 18 emergency homeless family shelters in Los Angeles County were interviewed. To evaluate the answers, interviewers used standardized measures of depression, behavioral problems, receptive vocabulary, and reading. RESULTS: The vast majority (78%) of homeless children suffered from either depression, a behavioral problem, or severe academic delay. Among children having a problem, only one third of the parents were aware of any problem, and few of those children (15%) had ever received mental health care or special education. CONCLUSIONS: Almost all school-age sheltered homeless children in Los Angeles County have symptoms of depression, a behavioral problem, or academic delay severe enough to merit a clinical evaluation, yet few receive specific care. Programs targeted at sheltered homeless school-age children are needed to close this gap.

Child↗
PubMed1992

The course of depression in adult outpatients. Results from the Medical Outcomes Study.

OBJECTIVE: To compare the course of depression during a 2-year period in adult outpatients (n = 626) with current major depression, dysthymia, and either both current disorders ("double depression") or depressive symptoms with no current depressive disorder. METHODS: Depressed patients visiting 523 clinicians (mental health specialists and general medical providers) were identified using a two-stage screening procedure including the Diagnostic Interview Schedule. The course of depression was assessed in 2 follow-up years with a structured telephone interview based on the format of the Diagnostic Interview Schedule. RESULTS: Baseline severity of depressive symptoms was greatest in patients with double depression, but initial functional status was poor in those with dysthymia with or without concurrent major depression. Patients with dysthymia had the worst outcomes, those with current major depression alone had intermediate outcomes, and those with subthreshold depressive symptoms had the best outcomes. Even the latter group, however, had a high incidence (25%) of major depressive episode over 2 years. Initial depression severity and level of functional status accounted for more explained variance in outcomes than did type of depressive disorder. CONCLUSIONS: The findings emphasize the poor prognosis associated with dysthymia even in the absence of major depression; the prognostic significance of subthreshold depressive symptoms; and the clinical significance of assessing level of severity of symptoms as well as functional status and well-being, regardless of type of depressive disorder.

Adult↗
PubMed1992

First-year students' expectations of interacting with minority patients and colleagues.

In a 1988-89 pilot study, the authors surveyed the first-year medical students at the University of California, Los Angeles, School of Medicine in order to examine the students' expectations regarding future encounters with minority colleagues and patients, and how these expectations related to the students' own race or ethnicity and their perceived levels of experience with various racial-ethnic groups; 89 of 140 students responded (64%). There were significant positive associations between the students' levels of experience working or interacting socially with blacks or Hispanics (regardless of the students' own race or ethnicity) and their perceived likelihood of practicing with black or Hispanic partners, whereas there were significant negative associations between experience with blacks or Hispanics and the perceived likelihood of living in predominantly white communities. Further, the black and Hispanic students expected to have a higher percentage of their patients from black or Hispanic backgrounds than did other students. The authors suggest that these results underscore the importance of evaluating students' experience as well as race or ethnicity when attempting to increase representation of students with a commitment to serve minority populations.

Attitude of Health Personnel↗
PubMed1992

The effects of preferred provider options in fee-for-service plans on use of outpatient mental health services by three employee groups.

Descriptions of how preferred provider organizations (PPOs), offered as options to employees enrolled in fee-for-service plans, affected use of outpatient mental health services are provided. Data are from the RAND Preferred Provider Organization Study, which has a sample of employees who enrolled in fee-for-service plans 1 year before and 2 years after a PPO option was offered by three employers in two U.S. sites. To study effects of the optional PPOs on access to mental health care, usage patterns among those who initially stated that they did or did not intend to use PPO providers were examined. By the end of the second post-PPO year, employees had a similar annual probability of having an outpatient mental health visit whether or not they initially intended to use PPO providers. However, during the first post-PPO year, there was a decrease in the probability of use for those initially intending to use PPO providers, relative to those who did not intend to do so, among employees who had no regular medical provider. To study effects of the PPO option on usage levels of mental health care services, users of mental health services who primarily visited PPO were compared with those who primarily visited non-PPO providers. Users who visited PPO providers had significantly lower levels of use, controlling for other factors, than those who primarily visited non-PPO providers. Therefore, despite lower cost sharing for services received from PPO providers, the PPO option appeared to lower outpatient mental health care costs while having no more than a transient effect on access. This study did not evaluate mental health outcomes.

Adult↗
PubMed1992

The effects of psychological distress and psychological well-being on use of medical services.

In this study, the authors determined whether mental health status affects the use of general medical services, with and without adjustment for the correlated effects of general health perceptions and physical health status on such use. Data were used from the RAND Health Insurance Experiment, which has information on up to 5 years of use of medical services by a nonelderly, civilian, general population. Health status and other covariates were assessed by self-administered questionnaires at enrollment. In the absence of statistical control for general and physical health status, worse mental health status-whether assessed by a global self-report measure or its two component parts, psychological well-being and psychological distress-significantly increased the use of both inpatient and outpatient general medical services. After controlling for general health perceptions, physical health status, demographic factors, and insurance plan coverage, the effects of mental health status on use are reduced, but not eliminated. Psychological distress and psychological well-being retained independent effects on total medical expenses.

Activities of Daily Living↗
PubMed1992

Clinical factors associated with better quality of life in a seriously mentally ill population.

Improving the quality of life of persons with chronic mental illness is becoming an important treatment goal. In this study, 101 former acute care psychiatric inpatients with serious mental illness who were living in Mississippi communities were interviewed using portions of Lehman's Quality of Life Interview. A particular focus was whether clinical characteristics, such as medication compliance and social skills, that could be changed by interventions were associated with patients' ratings of their quality of life. Self-reports of better quality of life were associated with fewer depressive symptoms, fewer medication side effects, and better family interactions. Results indicate that clinical interventions to improve quality of life in this population should include family psychoeducational programs and better detection, evaluation, and treatment of both depressive symptoms and side effects of medication.

Adolescent↗
PubMed1991

Mental health and selection of preferred providers. Experience in three employee groups.

While Preferred Provider Organizations (PPOs) are designed to contain the costs of health care, they may not be able to do so if sicker individuals opt not to use PPO providers. This study examined how level of mental health status and prior use of mental health services affected the decision to use or not use PPO providers for mental health care for employees enrolled in fee-for-service plans with a PPO option. Data were obtained from an employee survey and claims data on three large employee groups. It was not possible to examine effects of sickliness on the intent to select PPO providers for mental health care directly because about one half of employees could not identify who they would visit for mental health care or even how they would select a provider for such care. The intent to use PPO or non-PPO providers for general medical care, however, was not significantly associated with mental health status when other factors were controlled. Furthermore, among persons who used mental health services after implementation of the PPO option, those who had previously visited providers who were to become part of the PPO panel tended to stay with PPO providers, while those who previously visited providers who were not to enter the PPO panel subsequently selected away from PPO providers for mental health care. This pattern of results suggests that established individual patient-provider relationships, rather than sickliness, determined the selection of PPO versus non-PPO providers for mental health care for employees enrolled in these optional PPO fee-for-service plans.

Adult↗
PubMed1991

How do HMOs reduce outpatient mental health care costs?

OBJECTIVE: Because previous studies of differences in utilization of mental health care services have had important limitations, it is not clear if their findings that health maintenance organization (HMO) outpatient mental health care costs less than fee-for-service care are due to less access, less intensive care per user, or selective enrollment of healthier people by HMOs. Therefore, the authors used data from the National Institute of Mental Health Epidemiologic Catchment Area (ECA) study to examine differences in the prevalence of psychiatric disorder and differences in the use of outpatient mental health services for adults enrolled in HMO or fee-for-service health insurance plans. METHOD: The subjects were an ECA community sample obtained from East Los Angeles and West Los Angeles. This sample included a large number of Hispanic subjects. The subjects were categorized according to their responses to a 5-item battery on insurance as Medicare enrolles, members of private fee-for-service plans, Medicaid enrollees, members of an HMO, and uninsured. The presence or absence of psychiatric disorders was determined by using the NIMH Diagnostic Interview Schedule. Both users and nonusers of mental health services were studied. RESULTS: The HMO and fee-for-service plans had similar prevalence of psychiatric disorder and similar access to specialty mental health care. However, HMO enrollees had significantly fewer visits per user to providers of specialty care. CONCLUSIONS: The most likely explanation for lower mental health care costs in HMOs is a less intensive style of care for a comparably sick population.

Adult↗
PubMed1991

How the medical comorbidity of depressed patients differs across health care settings: results from the Medical Outcomes Study.

OBJECTIVE: Although depression is one of the most common problems of medical and psychiatric outpatients, it has not been clear whether the extent of medical comorbidity among depressed patients varies across major types of clinical settings in which depressed patients receive care--especially by type of treating clinician (general medical versus mental health specialty) or type of payment for services (prepaid versus fee-for-service). METHODS: The authors examined these issues using data on 1,152 adult outpatients with current depressive symptoms and a lifetime history of unipolar depressive disorder who received care in one of three health care delivery systems in three U.S. sites. RESULTS: Depressed patients had a similarly high prevalence (64.9%-71.0%) of any of eight common chronic medical conditions whether they were seen in the general medical or specialty mental health sector; however, those visiting medical clinicians had a significantly higher prevalence of the two most common chronic medical conditions, hypertension and arthritis. Among depressed patients with hypertension, those visiting the general medical sector were more likely to be taking antihypertensive medication than were those visiting the mental health specialty sector. Type of payment (prepaid versus fee-for-service) was unrelated to either prevalence or severity of comorbid medical conditions, suggesting that the typical depressed patient in all types of practices studied had medical comorbidity. CONCLUSIONS: These data suggest that clinicians in all health care settings must be prepared to encounter chronic medical conditions and complaints in the depressed patients who visit them.

Adult↗
PubMed1991

Caring for depression in America: lessons learned from early findings of the medical outcomes study.

Research has documented that depressive disorders are a highly prevalent condition among adults in general population and patient samples and that these disorders are strongly associated with functional limitations. But data have not been available to compare the societal importance of depression to other major health conditions. In addition, although about one-half of persons with psychiatric disorders are believed to have their only contact with health care providers in the primary care sector, research findings suggest that depression often remains undetected and untreated in this secto; and there have been few data on how appropriateness of care for depression differs for patients in different health care delivery systems, or whose care is financed by prepayment or fee-for-service arrangements. As a result, it is not clear which health care systems should be promoted as providing appropriate care for this important psychiatric disorder. Data from the Medical Outcomes Study corroborate and strengthen the conclusion that depression is of considerable clinical and social importance in both outpatient medical and mental health specialty care sectors. Specifically, we have learned that depression is associated with as much limitation in multiple aspects of daily functioning and well-being as are most common chronic medical conditions. In addition, we have found that rates of detection of depressive disorder in the primary care sector are low and influenced by nonclinical factors such as type of payment for services. These findings increase the urgency of improving care for depression in the primary care sector, and of carefully evaluating how changes in the financing and organization of health care delivery systems affect the clinical care of psychiatric disorders.

Adult↗