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Biomedical subjects

M Von Korff

Publications and source records attributed to M Von Korff.

At least 91 records · Page 5Linked to original sources
PubMed1991

Somatization: a spectrum of severity.

OBJECTIVE: The DSM-III-R diagnosis of somatization disorder requires that a patient have a specific number of medically unexplained somatic symptoms. This number of symptoms was developed by committee consensus, and it is not clear whether patients with this specific number of symptoms can be differentiated from patients with lower but still substantial numbers of somatic symptoms. METHOD: Fifty-one percent of 767 high utilizers of two primary care clinics were identified as distressed by an elevated SCL anxiety, depression, or somatization scale score or by their primary care physician. The Diagnostic Interview Schedule (DIS) was completed on 119 distressed high utilizers who were randomly assigned to an intervention group in a controlled trial of psychiatric consultation. The 119 distressed high utilizers were separated into four categories according to the number of unexplained somatic symptoms found on the DIS and were compared on demographic, psychiatric distress, disability, medical, and health utilization variables. RESULTS: The data suggest that many clinical and behavioral features of somatization are significantly more common in patients with four to 12 medically unexplained somatic symptoms rather than changing dramatically at the diagnostic threshold for somatization disorder. The data also showed that patients who meet the DSM-III-R criteria for somatization disorder are severely ill and have a high burden of psychiatric illness and disability. CONCLUSIONS: The results suggest that the DSM-IV somatoform disorders section should include somatization disorder, an abridged definition of somatization disorder often associated with anxiety and depression, as well as a type of somatization associated with an adjustment disorder.

Activities of Daily Living↗
PubMed1990

Multiple pains and psychiatric disturbance. An epidemiologic investigation.

We assessed multiple pain conditions and their association with affective disturbance, somatization, and psychological distress based on questionnaire data from a probability sample of 1016 enrollees of a large health maintenance organization. Respondents were asked about the presence of five pain conditions and were classified empirically in terms of dysfunctional chronic pain status based on pain severity, pain persistence, and pain-related disability days. Logistic regression analyses revealed a highly significant association between number of pain conditions reported and elevated levels of somatization as measured by the Symptom Checklist 90-Revised. Individuals with two or more pain conditions were at elevated risk of an algorithm diagnosis of major depression, while persons with a single pain condition did not differ from persons with no current pain conditions. Number of pain conditions reported was a better predictor of major depression than were important measures of pain experience, including pain severity and pain persistence.

Adolescent↗
PubMed1990

Assessing clinical signs of temporomandibular disorders: reliability of clinical examiners.

Data on interrater reliability in assessing a number of clinical signs commonly evaluated in the diagnosis and treatment of temporomandibular disorders (TMD) is presented in this article. Four experienced dental hygienists who were field examiners for a large epidemiologic study of TMD and three experienced clinical TMD specialists (dentists) who are coinvestigators in the same study followed carefully detailed specifications and criteria for examination of TMD patients and pain-free controls. Excellent reliability was found for vertical range of motion measures and for summary indices measuring the overall presence of a clinical sign that could arise from several sources (for example, summary indices of muscle palpation pain). However, many clinical signs important in the differential diagnosis of subtypes of TMD were not measured with high reliability. In particular, assessment of pain in response to muscle palpation and identification of specific temporomandibular joint sounds seemed to be possible only with modest, sometimes marginal, reliability. These modest reliabilities could arise from examiner error because the clinical signs are themselves unreliable, changing spontaneously over time and making it difficult to find the same sign on successive examinations. The finding that, without calibration, experienced clinicians showed low reliability with other clinicians suggests the importance of establishing reliable clinical standards for the examination and diagnostic classification of TMD.

Adult↗
PubMed1990

Distressed high utilizers of medical care. DSM-III-R diagnoses and treatment needs.

Among a sample of 767 high utilizers of health care, 51% were identified as distressed by an elevated score on the SCL anxiety and depression scales, the SCL somatization scale, or by their primary-care physician. These distressed high utilizers were found to have a high prevalence of chronic medical problems and significant limitation of activities caused by illness. In the prior year, they made an average of 15 medical visits and 15 telephone calls to the clinic. The Diagnostic Interview Schedule was completed on 119 distressed high utilizers randomly assigned to an intervention group in a controlled trial of psychiatric consultation. The following DSM-III-R disorders were most common: major depression 23.5%, dysthymic disorder 16.8%, generalized anxiety disorder 21.8%, and somatization disorder 20.2%. Two thirds had a lifetime history of major depression. The examination resulted in an improved diagnostic assessment for 40% of intervention patients and a revised treatment plan for 67%.

Adolescent↗
PubMed1990

Epidemiology of signs and symptoms in temporomandibular disorders: clinical signs in cases and controls.

An epidemiologic study of clinical signs and symptoms of temporomandibular disorders (TMD) was conducted with a probability sample of adults enrolled in a major health maintenance organization (HMO). This report presents data from a first wave field examination and interview conducted by trained, calibrated dental hygienist field examiners. Significant gender differences for vertical jaw opening measures were observed but no significant age differences were found for the distribution of clinically relevant findings. Clinic cases showed smaller amounts of vertical range of jaw motion but did not differ from community cases or controls on extent of lateral, protrusive, or retrusive mandibular movements; on classification of occlusion; or on dentally related variables. Clinic cases had more pain during all jaw excursions as well as during muscle and joint palpation. Joint clicking sounds were also observed more frequently in clinic cases.

Adolescent↗
PubMed1990

Evaluating community-based nutrition programs: assessing the reliability of a survey of grocery store product displays.

A pilot test of a survey of grocery store product displays was conducted to measure the amount of health-education information provided and the proportion of the display devoted to "healthier" products. Inter-rater reliability ranged between 0.73 and 0.78 for the healthiness indices and between 0.30 and 0.67 for the health education measures. Test-retest reliability ranged from 0.44 to 1.0.

Food Labeling↗
PubMed1987

Anxiety and depression in a primary care clinic. Comparison of Diagnostic Interview Schedule, General Health Questionnaire, and practitioner assessments.

Over one half of all persons seen in a primary care clinic were identified as having anxiety or depressive disorder by the primary care provider, the General Health Questionnaire (GHQ), or the Diagnostic Interview Schedule (DIS). In only about 5% of all patients were findings positive on all three assessments concurrently. Both the GHQ and the practitioners identified over 30% of all patients as having a disorder, while about 8% had one or more of five DIS anxiety or depressive disorders (major depression, dysthymia, panic disorder, generalized anxiety disorder, or obsessive-compulsive disorder). Of the patients with DIS disorders 83% had positive GHQ scores, and 73% were identified by the practitioner as having a mental disorder.

Adolescent↗
PubMed1987

Evaluation of psychiatric consultation-liaison in primary care settings.

This article considers eight methodologic issues in the evaluation of psychiatric consultation-liaison services in primary care settings. What should be evaluated--standardized treatment regimens administered to highly selected patient groups or individualized treatments administered to heterogeneous patient groups? How can patient groups be selected to test for generic outcomes resulting from individualized treatments? When should randomized designs be employed? Should patients or physicians be randomized? How should diagnostic classification of study subjects be accomplished? What outcomes should be measured? How can study design be accommodated to patient flow in clinical settings? What resources are required to establish a productive program of research in liaison psychiatry?

Humans↗
PubMed1987

The primary care physician and psychiatric services.

This article describes the relationship of self-assessed psychiatric skill among primary care physicians to their role in treating mental disorders. Physicians rated diagnostic skills more favorably than therapeutic skills. Factor analysis was used to identify three dimensions of physician skill: confidence in treatment of major disorders; confidence in treatment of anxiety; and diagnostic confidence. These variables were found to be associated with the reported number of patients with specific mental disorders managed by the physician.

Anxiety Disorders↗
PubMed1985

Prevalence of treated and untreated DSM-III schizophrenia. Results of a two-stage community survey.

Psychiatrists, using a standardized clinical method, examined a probability sample of 810 subjects in eastern Baltimore and made diagnoses of mental disorders among those subjects according to DSM-III criteria. The authors estimated that there were 4.6 active cases of schizophrenia per 1000 adult noninstitutionalized population, and 6.4 cases per 1000 population, including both active and remitted cases. Among the 17 active and remitted schizophrenics identified in the survey, one half were not receiving any form of mental health services at the time of the survey; these data yield a prevalence rate of untreated cases of 3.1 per 1000 population. All of the untreated schizophrenics were deemed by the examining psychiatrist to be in need of services.

Adolescent↗
PubMed1985

Patterns of mental disorders among the elderly residents of eastern Baltimore.

An extensive analysis of prevalence rates of cognitive impairment and other mental morbidities was carried out as part of a five-site national study on the health and mental health of an ambulatory population. This study reports on prevalence rates contrasted by age across the 18 and over population for cognitive impairment and other diagnoses in the Baltimore, Maryland, site of this study. Differences in prevalence rates by age are striking. Eight conditions have rates above 1 per cent among those 64 and younger: phobia (13.8 per cent), alcohol use disorder (6.5 per cent), obsessive compulsive disorder (2.2 per cent), schizophrenia (1.4 per cent), and panic disorder (1.2 per cent). For the older group, 65 to 74 years, five conditions have such prevalence rates: phobic disorder (12.1 per cent), severe cognitive impairment (3.0 per cent), alcohol use disorder (2.1 per cent), obsessive compulsive disorder (2.2 per cent), and dysthymia (1.0 per cent). For the oldest group, those 75 and over, only four conditions have rates of 1 per cent or more. These are: phobic disorders (10.1 per cent), severe cognitive impairment (9.3 per cent), major depression (1.3 per cent), and dysthymia (1.1 per cent). Rates of cognitive impairment increase markedly with age and high rates of this disorder were found among those never married, separated, divorced, or widowed. Implications of these findings for understanding mental morbidity among the elderly and issues for future planning are discussed.

Adolescent↗
PubMed1984

The design of the Epidemiologic Catchment Area surveys. The control and measurement of error.

Several methods are used to minimize and measure error in the NIMH Epidemiologic Catchment Area program. Sampling methods involve the inclusion of group quarters such as prisons, nursing homes, and mental hospitals in the sample frame and the use of probability sampling throughout. Interviewing, methods include use of identical diagnostic interview protocols, centralized training of interview supervisors, standard instructions to interviewers, and reinterview of a subsample by clinicians. In the area of completion, the methods include a 75% to 80% respondent completion rate, a 95% or greater completion rate for individual questions, use of informant interviews where necessary, and statistical adjustments to correct for low completion rates in some subgroups. Analytic methods include use of a computerized diagnostic algorithm, common estimation formulas on identically formatted data files, and estimation of exact variances that take account of the multistage sample design.

Catchment Area, Health↗
PubMed1984

Utilization of health and mental health services. Three Epidemiologic Catchment Area sites.

Utilization of health and mental health services by non-institutionalized persons aged 18 years and older is examined based on interviews with probability samples of 3,000 to 3,500 persons in each of three sites of the National Institute of Mental Health Epidemiologic Catchment Area (ECA) program: New Haven, Conn, Baltimore, and St Louis. In all three ECAs, 6% to 7% of the adults made a visit during the prior six months for mental health reasons; proportions were considerably higher among persons with recent DSM-III disorders covered by the Diagnostic Interview Schedule (DIS) or severe cognitive impairment. Between 24% and 38% of all ambulatory visits by persons with DIS disorders were to mental health specialists. In seeking mental health services, men were more likely to turn to the specialty sector than to the generalist; women used both sectors about equally. The aged infrequently received care from mental health specialists. Visits for mental health reasons varied considerably depending on specific types of DIS disorder.

Adolescent↗
PubMedDate not supplied

Identifying suicide potential in primary care.

This research addresses two issues concerning the role of primary care physicians in suicide prevention: 1) Are there signals in a patient's medical record that identify patients at increased risk of suicide? 2) Is the pattern of utilization of suicides immediately prior to suicide different from those of other patients? To address these issues, medical records data for suicides and for symptomatically depressed and non-depressed enrollees of an HMO were compared. Suicidal ideation and behavior, selected psychiatric diagnoses, and interpersonal problems were associated with suicide. However, information recorded in the medical record did not reliably discriminate suicides from controls. There were no substantial differences in the use of general medical services between the suicides and the controls. Less than 20% of the suicides visited a primary care physician in the month prior to death. Only 39% of suicides received specialty mental health treatment in the 18 months prior to death.

Depression↗
PubMedDate not supplied

Frustrating patients: physician and patient perspectives among distressed high users of medical services.

OBJECTIVE: To identify differences between patients viewed as frustrating by their physicians and those considered typical and satisfying. DESIGN: This cross-sectional observational study focused on psychologically distressed high users of medical services. Frustrating patients were compared with typical and satisfying patients, using data from patient questionnaires, physician assessments, structured psychiatric interviews, and computerized utilization records. SETTING: Group Health Cooperative of Puget Sound, a large health maintenance organization. PATIENTS/PARTICIPANTS: Study patients were in the top decile for ambulatory visits, and bad elevated scores for anxiety, depression, and somatization. Among the 339 patients invited to participate in the study, 251 agreed, and 228 were rated by their physicians. MAIN RESULTS: A substantial proportion (37%) of the high users were viewed as frustrating by their physicians. Physicians' ratings of physical disease severity did not differ among the groups, but frustrating patients rated their own health status less favorably and reported more somatic symptoms and disabilities. The frustrating group utilized more medical services than did other distressed high utilizers. All three groups had a high prevalence of mental disorders. However, frustrating patients had higher rates of somatization and generalized anxiety disorder. CONCLUSIONS: Physicians and their frustrating patients had contrasting views of the patients' illnesses. The best predictors of physician frustration were somatization and increased medical service utilization. There is need for further research and clinical attention concerning optimal clinical management for patients with somatization.

Adult↗
PubMedDate not supplied

Neuroticism and extraversion as predictors of health outcomes in depressed primary care patients.

Depressed primary care patients (N = 217) were assessed to determine if certain personality characteristics predict health domains independent of chronic disease, demographics, depression, and psychiatric diagnoses. Eleven health variables were used to create three outcome factor scores: disability (e.g., days missed work); somatization (e.g., medically unexplained symptoms); and subjective pain (severity, interference). Neuroticism explained significant variance in all health outcomes independent of the other predictors. Depression and neuroticism interacted in the disability and pain models. Depression was related to health in neurotic patients, while in the absence of neuroticism, little relation between depression and health was observed. Neuroticism may explain why persons with similar health problems have differing levels of disability, pain, and somatization.

Depressive Disorder↗
PubMedDate not supplied

Low-intensity treatment of depression in primary care: is it problematic?

The aim of this study was to examine patterns of care and outcomes of depressed patients under primary care during acute phase treatment. A cohort of depressed patients was assessed 6-8 weeks after starting pharmacotherapy in four large primary care clinics in a health maintenance organization. These patients (n = 1671) were receiving antidepressant treatment for a new episode of depression. To calculate main outcome measures, Structured Clinical Interview for Depression evaluated prior history and current depression status. Visit and pharmacy refill data described use of health services and antidepressant medication. Six to eight weeks after starting antidepressant therapy, 33.2% of patients had 0-3 depressive symptoms and no prior history of depression, an additional 42.3% also reported 0-3 symptoms but were at high risk of relapse, and 24. 5% were persistently depressed with 4 or more depressive symptoms. In the initial 6 weeks of treatment, these three groups showed similar use of antidepressant medication and health services. About 50% in each group had no follow-up visit for depression and 32%-42% had not refilled their antidepressant prescription. In general, depressed patients under primary care obtained low-intensity pharmacotherapy and inconsistent follow-up visits during initial acute phase treatment. Six weeks after starting antidepressant medicine, many were still symptomatic or recovered but had a high risk of depression relapse. Patients with unfavorable outcomes did not receive more intensive management than the one-third who had favorable outcomes.

Acute Disease↗