R Giel

Detecting psychopathology in young adults: the Young Adult Self Report, the General Health Questionnaire and the Symptom Checklist as screening instruments

This study compares the screening capacity of an age‐adjusted child‐oriented questionnaire, the Young Adult Self Report (YASR) with two adult‐oriented questionnaires, the General Health Questionnaire‐28 (GHQ‐28) and Symptom Checklist‐90 (SCL‐90) in a sample of young adults (18–25 years). The YASR performed just as well as the SCL‐90 and both performed better than the GHQ‐28. The relatively poor performance of the GHQ‐28 compared with the YASR and SCL‐90 could not be attributed to instrument characteristics or to the use of referral status as indicator of psychopathology. In assessing psychopathology in young adults an age‐adjusted child‐oriented instrument might be a good alternative to the existing adult‐oriented instruments, especially when one takes into account the problem of data comparability over time in longitudinal studies in which children are followed into adulthood.

Psychometric properties of the schedules for clinical assessment in neuropsychiatry (SCAN-2.1)

Abstract  Background: The Schedules for Clinical Assessment in Neuropsychiatry (SCAN), the successor of the ninth version of the Present State Examination (PSE-9), is one of the latest instruments developed by the World Health Organisation for the assessment of psychiatric disorders. So far, the psychometric properties have only been established for certain sections of the instrument. The present study is the first to test the psychometric properties of SCAN-2.1 for most of the disorders covered by the SCAN, and was carried out prior to a survey conducted in the Nijmegen Health Area (the Netherlands). Methods: Interviewers were psychology graduates with little clinical experience. Two designs were used. In one design, pairs of independent live interviews with the same respondent were compared (test-retest situation). In the other, ten videotaped interviews by experts were rated by each of the interviewers (standardized situation), and the outcomes were compared with those of the other interviewers as well as with a reference score. Results: In the test-retest situation the κ coefficient for diagnostic caseness was qualified as substantial (0.62) and for diagnostic categories and diagnostic groups as moderate to good (0.24 to 0.64). In the standardized situation using videotaped interviews by experts, sensitivity as well as specificity proved to be substantial to almost perfect. The agreement per interviewer with regard to the reference diagnoses ranged from 87% (diagnostic group) to 94% (diagnostic caseness). Agreement on the syndrome level (without duration and interference criteria of DSM-IV) was excellent. Conclusions: Although the instrument is traditionally used by experienced clinicians, this study shows that less experienced (but well trained) interviewers can apply SCAN reliably. Special attention should be paid to the items without explicit interview questions, as they tend to be more sensitive to neglect than the items with interview questions.

THE RELIABILITY OF DIAGNOSTIC CODING IN PSYCHIATRIC CASE REGISTERS

In total, 103 cases were randomly selected from the Groningen, Nottingham and South Verona registers. Six raters (two in each of the register areas) were involved in coding these cases according to the ICD-9. In general, interrater agreement was satisfactory when codes were grouped into a limited number of categories. Nevertheless, considerable variation in agreement rates was found. We distinguished three steps in the diagnostic process. The selected logistic model showed that reliability is significantly affected in each step, but only substantial in the first where clinicians formulate a diagnosis.

PATTERNS OF CARE IN THE FIELD OF MENTAL-HEALTH - CONCEPTUAL DEFINITION AND RESEARCH METHODS

ABSTRACT The concept “patterns of care” plays a central role in research focusing on the evaluation of mental health care. It is a concept encompassing a number of dimensions. The primary ingredients are the type, the setting, the intensity and the duration of care. In this paper, a critical survey is provided of a total of 7 classifications or scales of patterns of care. An argument is advanced for developing a more systematic working method within this research area, in which new scales of patterns of care are developed, building on the methodology already in existence. Standardization is urgently needed if comparative research is to yield better results than it has in the past.

USE OF MENTAL-HEALTH SERVICES IN SOUTH VERONA AND GRONINGEN - A COMPARATIVE CASE-REGISTER STUDY

ABSTRACT A comparison was made of the utilization of mental health services in a psychiatric case register area in Italy (south Verona) and one in the Netherlands (Groningen). All residents living in these areas who contacted a mental health service in 1982 were traced and followed for a period of one year. The year prevalence rates differed considerably (110/10,000 in south Verona and 329/10,000 in Groningen). Rates of single consulters were similar in both areas, while those of chronic inpatients were more than 11 times higher in Groningen than in south Verona. After excluding both single consulters and chronic inpatients, when comparing service consumption according to fixed classes of scores, the category of highest service use accounted for 60% of care provided in Groningen as compared with less than 30% in south Verona. The proportion of total service consumption due to inpatient care was about the same in both areas, but brief admissions were more common in south Verona. Moreover, when service use was considered as a relative construct, about 10% of patients in both areas could be called high users. Finally, long‐term patients were more prevalent in Groningen (26%) than in south Verona (13%).

Concurrent validity of GHQ-28 and PSE as measures of change

Substantial cross-sectional correlations have been reported between the GHQ and PSE (and CIS) total scores. Although necessary, this is not a sufficient condition for assuming good validity of the GHQ as a severity measure in longitudinal and health care evaluation studies. For this purpose the GHQ should also accurately reflect changes in severity over time. To examine their concurrent validity, GHQ and PSE scores were compared, in a three-wave longitudinal study, among 175 new psychiatric out-patients. Using a longitudinal structural equation model that takes measurement error into account, the strength of both the cross-sectional and longitudinal relationship between GHQ and PSE were estimated. The GHQ performed remarkably well; changes in severity as defined by PSE-ID and PSE total score were clearly reflected by changes in GHQ scores. The revised scoring method of the GHQ proposed by Goodchild and Duncan-Jones did not yield superior results.

Relationship between symptomatology and social disability

SummaryThe relationship between symptomatology and social functioning was investigated. Data were derived from a Dutch cohort of 82 patients with a first life-time episode of non-affective, functional psychosis, who participated in the WHO Collaborative Study on the Assessment and Reduction of Psychiatric Disability. Correlations between scores on two unidimensional, hierarchical rating scales in the 3 years after onset of illness were examined and a comparison was made between course of symptomatology and social disability. The relationship was found to be rather weak, a conclusion that is somewhat in variance with earlier studies. It is conjectured that this may partly be explained by the fact that different study methods were used.

Mental illness, neuroticism and life events in a Dutch village sample: a follow-up

In a 5-year follow-up of 32 patients identified during a survey of a Dutch village in 1969, approximately two-thirds were found to have recovered. This result was reflected in the scores on a self-reporting questionnaire. A control group showed little change over those years. The persistence of psychiatric problems was related to life experience, as measured by a life-event interview.

Efficacy of psychiatric day treatment. Course and outcome of psychiatric disorders in a randomised trial.

The course of the psychopathology and social functioning in an experimental day-treatment group referred for inpatient psychiatric treatment is compared with that of a control group receiving standard inpatient care. During a follow-up period of 2 years subjects were interviewed three times. The interview comprised information about psychiatric symptoms, psychological functions, psychiatric diagnosis and social-role functioning. Apart from these discrete assessments an effort was made to map episodes of illness throughout the follow-up period. Upon entry the groups did not differ in terms of psychopathology or social functioning. At follow-up both groups had improved significantly with respect to symptomatology, psychological and social functioning. The extent to which the groups improved did not differ significantly regarding pathology, but self-care improved more in the experimental group. The average duration of episodes of illness was similar for the experimental and control group. During the 2-year follow-up patients suffered from a well-defined disorder during an average of 11 months. The fact that approximately 40% of them were still a psychiatric case after 2 years further underscores the severity of their pathology.

Patterns of mental health care in two European areas: Mannheim, Federal Republic of Germany; and Groningen, The Netherlands

ABSTRACT— All consecutive cases entering the mental health services cooperating with the cumulative psychiatric case register of Mannheim between 1‐31 July 1976 were followed up until the end of June 1978 and compared with the consecutive cases entering the mental health services cooperating with the psychiatric case register of Groningen between 1 January and 1 May 1979. Patterns of in‐, day‐ and outpatient care delivered to these 2 cohorts of patients, who were ≥ 15 years of age, and who had not been in contact with one of the services for at least 6 months prior to entry, were compared by diagnostic category. The most common episode of care was the relatively brief outpatient one. Mixed types of care and chronic cases were more common among patients with a psychosis or an addiction than in other diagnostic categories. Between 6 and 24 months after first contact 76% of the patients in Mannheim and 43% of the patients in Groningen had no more contacts. Between 18 and 24 months after the first contact the percentages had increased to 90 and 72% (respectively). In Groningen a higher percentage of patients received outpatient care only. Although a larger percentage of patients in Mannheim received inpatient care, the accumulation of “new chronic” patients was larger in Groningen, as a result of a greater length of stay in Groningen.