Biomedical subjects

M G Warshaw

Publications and source records attributed to M G Warshaw.

32 records · Page 2Linked to original sources

PubMed1994

Panic, agoraphobia, and panic disorder with agoraphobia. Data from a multicenter anxiety disorders study.

In a cross-sectional investigation of the properties of DSM-III-R panic disorder (PD), panic disorder with agoraphobia (PDA), and agoraphobia without history of panic disorder (AWOPD), we analyzed demographic, descriptive, comorbidity, treatment, and course data for 562 subjects with PD, PDA, or AWOPD in a multicenter anxiety-disorders study. In general, AWOPD subjects had the worst functioning and PD subjects the best, as measured by length of intake episodes, education attained, likelihood of receiving financial assistance, depressive comorbidity, and likelihood of having experienced 8 weeks symptom-free. Panic disorder with agoraphobia was the most common disorder and emerged as a condition intermediate in severity between the other two. Treatments received varied little by diagnosis. Most subjects received medication, usually benzodiazepines. Psychodynamic psychotherapy was the most frequently received psychosocial treatment; cognitive and behavioral approaches were less common. Subjects classified with AWOPD were the most likely to have received exposure therapies.

Adult↗

PubMed1994

Remission and relapse in subjects with panic disorder and panic with agoraphobia: a prospective short-interval naturalistic follow-up.

This article reports on the course of uncomplicated panic disorder and panic with agoraphobia on 309 patients participating in the Harvard/Brown Anxiety Research Project, a prospective longitudinal study of patients with DSM-III-R-defined anxiety disorders. At 1 year, there was a .39 probability of full remission for uncomplicated panic disorder and a .17 probability of full remission for panic disorder with agoraphobia Similar differences in time to remission for these syndromes were still found when criteria for remission were made less stringent. However, even requiring less improvement for remission left a large percentage of subjects in an episode, and for those that remitted, relapse occurred quickly, indicating a chronic and recurrent course of illness. This is the first longitudinal, prospective, naturalistic study on a large cohort of subjects with anxiety disorders to have regular, structured, short-interval follow-up. Our results are consistent with the view that panic disorder has a chronic course with high rates of relapse after remission and longer episodes when agoraphobia is a part of the constellation of symptoms.

Adult↗

PubMed1994

Prevalence of medical illness in patients with anxiety disorders.

OBJECTIVE: This investigation examines the prevalence and characteristics of medical illness in 711 patients enrolled in the Harvard/Brown Anxiety Disorders Research Program (HARP), a multi-center, longitudinal study of anxiety disorders. METHOD: Eligible subjects were those with present or past index anxiety disorders: panic disorder without agoraphobia, panic disorder with agoraphobia, agoraphobia without panic disorder, social phobia, or generalized anxiety disorder. They were assessed by trained raters using structured diagnostic interviews and the Medical History Form II. RESULTS: Patients with panic disorder and co-morbid major depressive disorder had significantly higher rates of reported medical illness than anxiety disorder patients without depression. When the rates of medical illness for all subjects were compared with those from the Rand Health Insurance Experiment, we found the prevalence of several medical problems to be disproportionately increased. CONCLUSIONS: Although our results are preliminary, it appears that patients with panic disorder have more reported medical problems than the public at large, in particular, more ulcer disease, angina, and thyroid disease. Somatic complaints in patients with panic disorder, therefore, need to be carefully considered.

Adult↗

PubMed1993

Quality of life and dissociation in anxiety disorder patients with histories of trauma or PTSD.

OBJECTIVE: The purpose of this analysis was to examine quality of life and dissociation in anxiety disorder subjects with histories of trauma, some of whom met criteria for posttraumatic stress disorder (PTSD). METHOD: Subjects came from a prospective, longitudinal study of anxiety disorders. Information was gathered on role, social life, suicide attempts, psychiatric hospitalization, alcohol and substance abuse, depression, and dissociation. RESULTS: Subjects with PTSD had the worst functioning on all of the measures examined except social life. Those with histories of trauma but no PTSD differed from subjects who reported no history of trauma, primarily in high rates of alcoholism and minor depression. CONCLUSIONS: PTSD has severe effects on quality of life in virtually all spheres of life. The high levels of depression, suicide attempts or gestures, and alcohol abuse are of particular concern and show that trauma can have long-lasting effects.

Adolescent↗

PubMed1993

Trauma and posttraumatic stress disorder in subjects with anxiety disorders.

Trauma histories were obtained from 711 subjects in a large study of anxiety disorders, with the intent of determining the prevalence and nature of psychological trauma in this group. Twenty-seven percent of subjects reported significant trauma; 35% of these (10% of all subjects) met DSM-II-R criteria for posttraumatic stress disorder (PTSD). Subjects reporting sexual trauma were significantly more likely to have PTSD. The rate of PTSD was not higher in subjects with panic disorder than in those with other anxiety disorders.

Adult↗

PubMed1993

Quality of life and psychiatric morbidity in panic disorder and generalized anxiety disorder.

OBJECTIVE: This report examines the impact of panic disorder and/or generalized anxiety disorder on quality of life and the implications of these findings on nosological categories. METHOD: A total of 357 subjects with a current episode of panic disorder and/or generalized anxiety disorder were diagnosed according to DSM-III-R criteria, using structured clinical interviews, as part of a prospective, naturalistic, longitudinal, multicenter study of a clinical population with anxiety disorders. RESULTS: There was a high degree of coexistence of anxiety disorders and major depressive disorder. Subjects with generalized anxiety disorder almost universally had other disorders, were the most likely to have at least one other anxiety disorder or major depressive disorder at intake, had the earliest age at onset, and had the worst emotional health rating. Subjects with panic disorder without agoraphobia had the most likelihood of a history of alcohol abuse. Nine percent of the subjects had a history of suicide attempts or gestures. CONCLUSIONS: The subjects showed significant impairment in quality of life. The highly frequent coexistence of other anxiety disorders with generalized anxiety disorder and the overall lack of differences on many quality of life measures raise questions of nosology, particularly for generalized anxiety disorder.

Adolescent↗

PubMed1993

Utilization of behavioral methods in a multicenter anxiety disorders study.

BACKGROUND: There are abundant data to justify the use of behavioral methods in treating patients with anxiety disorders. Yet there also is evidence that these methods have been underutilized in treating these patients. In this study we examined a large sample of patients with anxiety disorders to determine the extent to which behavior therapy methods were used in their treatment. METHOD: As part of a multicenter longitudinal study of patients with anxiety disorders in New England, we analyzed data pertinent to the type of treatment received by 231 patients at nine study sites. Study subjects received a battery of interview and self-report instruments administered by trained study interviewers at intake and at 6-month follow-up. A Psychosocial Treatments Interview designed by study personnel and administered by study interviewers at 6 months after intake provided data as to types of psychosocial treatment received by study subjects. RESULTS: Behavioral methods were used less frequently than supportive psychotherapy. medication, or psychodynamic psychotherapy. Among behavioral treatments, relaxation and imaginal exposure were used more frequently than in vivo exposure. Obsessive compulsive disorder and agoraphobia without panic were the diagnoses most likely to be treated behaviorally. Behavioral methods were used more frequently in combination with other modalities than they were alone. CONCLUSION: When compared with previous studies, the frequency of utilization of behavioral methods appears to have increased moderately. But our data are still consistent with a pattern of inappropriately low utilization of these effective treatment methods.

Adolescent↗

PubMed1991

Are secular trends in major depression an artifact of recall?

There is evidence that rates of major depression have increased over this century, with successive birth cohorts showing increased lifetime risks and earlier ages of onset. Two memory effects have been considered possible artifactual causes of these trends: age-related forgetting and postdating early episodes. In this study, relatives were reinterviewed six years after study entry using interviewers blind to initial reports. We examined the stability of lifetime diagnoses of MDD and ages of first onset. Older relatives were no more likely than younger ones to lose diagnoses nor to postdate their ages of first MDD onset. This is evidence that memory artifacts are not solely responsible for the observed secular trends.

Bias↗

PubMed1991

The use of conditional probabilities to examine age-period-cohort data: further evidence for a period effect in major depressive disorder.

There is growing evidence that rates of major depression have been increasing over this century, with successive birth cohorts showing increased lifetime risks and earlier ages of onset. In this paper, we describe and compare onset rates in six birth cohorts of first degree relatives of probands with affective disorders from the NIMH Collaborative Study, using graphs of conditional probabilities of first onset. There is evidence of a period effect and age-period interaction for both men and women.

Adult↗

PubMedDate not supplied

Profile of a large sample of patients with social phobia: comparison between generalized and specific social phobia.

This study examines a large cohort of subjects with social phobia, as part of a larger naturalistic and longitudinal study of 711 subjects with anxiety disorders. We focused on 176 subjects who were in an episode of social phobia at intake. We were particularly interested in evaluating the diagnostic distinction between generalized and specific social phobia. We compared these two groups along demographic characteristics, comorbidities, psychosocial functioning (health, role functioning, social functioning, and emotional functioning) and global assessment scores. We found that generalized social phobics tended to have an earlier age of onset as compared to the specific group; however, this is not a statistically significant difference at this level of analysis. The two groups did not differ for the current comorbidities examined. We observed no differences in the treatment received by the two types of social phobia subjects, and the two groups functioned equally well in terms of health and fulfilling social roles. In addition, we examined adverse childhood events (i.e., death of a parent, childhood abuse) and found no evidence for any differential impact these events might have on the type of social phobia. Although we did observe significantly greater fear of public speaking among the specific compared to the generalized group, which may indicate a qualitative difference between the subtypes, our results suggest that for most parameters, generalized and specific social phobia represent a continuum of similar and overlapping entities.

Adult↗

PubMedDate not supplied

Reliability and validity of the longitudinal interval follow-up evaluation for assessing outcome of anxiety disorders.

The LIFE-UP, an instrument for prospectively following course for psychiatric disorders, has been extended to include Psychiatric Status Ratings (PSRs) for the DSM-III-R anxiety disorders panic (with and without agoraphobia), agoraphobia without panic, generalized anxiety disorder, social phobia, and simple phobia. This paper reports data on the reliability and validity of the LIFE-UP as used in the Harvard/Brown Anxiety Disorders Research Program. We found generally good reliability for the PSRs, both inter-rater and long-term test-retest. The reliability coefficients for the rater-administered instruments were very similar to those for the self-reports, suggesting that a large proportion of the variance was due to subject variability rather than rater variability. Reliability for the beginning of the year of follow-up was very similar to that for the time just before the interview. In addition, correlations with other measures of psychosocial function or anxiety symptomatology provided evidence for the external validity of the PSRs as measures of psychiatric morbidity.

Adolescent↗

PubMedDate not supplied

Maintaining reliability in a long-term psychiatric study: an ongoing inter-rater reliability monitoring program using the longitudinal interval follow-up evaluation.

The Longitudinal Interval Follow-up Evaluation (LIFE), has been shown to be a valid and reliable instrument for characterizing the week-by-week course of anxiety disorders examined retrospectively over the period of 1 year. Due to the chronic nature of these disorders, there is a need for reliable, valid instruments for measuring course over periods of several years if we are to learn more about the natural history of these disorders. This paper describes a rater-monitoring program designed to ensure long-term inter-rater reliability and prevent "rater drift". In this program, clinical interviewers score taped interviews and are required to maintain a median intra-class correlation coefficient (ICC) of at least 0.80 with the other raters. Raters also assess tapes from previous years, to ensure that they are using the same diagnostic criteria as earlier generations of interviewers. A reliability study was conducted to compare psychiatric status ratings (PSRs) collected using biweekly telephone interviews with the semi-annual interviews. The ICCs for panic, agoraphobia, social phobia, and generalized anxiety disorder were very good to excellent. Another reliability study examined the PSRs of subjects who had been previously lost to follow-up. ICCs for panic, agoraphobia, generalized anxiety disorder and depression were good to excellent. These results show that the LIFE, when used in conjunction with an intensive training and rater monitoring system, is a reliable instrument for use in longitudinal studies of the course of anxiety disorders.

Adult↗

PubMedDate not supplied

Prevalence of somatoform disorders in a large sample of patients with anxiety disorders.

The authors investigated the prevalence and characteristics of somatoform (SOM) disorders among 654 subjects with anxiety disorders who were part of the larger Harvard/Brown Anxiety Disorders Research Project. Thirty-six (5.5%) of the subjects had past or current SOM disorders. The subjects with SOM disorders were significantly more likely to have histories of posttraumatic stress disorder (22% vs. 8%, P = 0.01). The subjects with generalized anxiety disorder had significantly higher rates of SOM disorder (9.2% vs. 4.0%, P = 0.01). These results add support to the observation that SOM disorders are frequently comorbid with anxiety and depressive disorders.

Anxiety Disorders↗

PubMedDate not supplied

Personality disorders, history of trauma, and posttraumatic stress disorder in subjects with anxiety disorders.

The purpose of the study was to examine the association of personality disorders, history of trauma, and posttraumatic stress disorder (PTSD) in a large sample of subjects with anxiety disorders. Categorical and continuous indices of personality disorders were compared in three groups from the Harvard/Brown Anxiety Disorders Research Project (HARP): subjects with no history of trauma (n = 403), subjects with a history of trauma but no history of PTSD (n = 151), and subjects with a current or past diagnosis of PTSD (n = 68). Subjects with PTSD were more likely to meet criteria for borderline or self-defeating personality disorder than subjects in the other two groups. PTSD subjects also had higher scores on the continuous measures (total number of criteria met) for borderline and self-defeating personality disorder than the other two groups. The findings suggest that a diagnosis of PTSD rather than a history of trauma is associated with borderline and self-defeating personality disorder features. Alternative conceptualizations of axis II features in individuals with PTSD are discussed.

Adult↗