PubMed Health⌕ Search

Biomedical subjects

T M Vallis

Publications and source records attributed to T M Vallis.

6 recordsLinked to original sources
PubMed2001

The role of psychological functioning in morbid obesity and its treatment with gastroplasty.

BACKGROUND: The authors evaluated the psychological characteristics of the morbidly obese. The condition-specific and quality-of-life characteristics of a large sample of vertical banded gastroplasty (VBG) patients were evaluated. The role that these psychological characteristics play in moderating the success of gastroplasty surgery, as well as the impact of surgery on quality of life, was examined. METHODS: This is a cross-sectional evaluative study of a clinical samples, with longitudinal follow-up and with non-surgical comparison groups. 89 morbidly obese individuals were assessed before VBG (but after having been accepted for surgery) and again 1.27 years after surgery. This group represents 98% of the patients who received VBG (i.e., a 2% dropout rate). We used established psychological measures (quality of life, adjustment to obesity, functional impairment, and eating attitudes), including a scale developed by our group specifically for morbid obesity, to identify distinct psychological profiles of the morbidly obese before surgery. RESULTS: The three profile groups differed significantly in psychological characteristics, ranging from high functioning (little emotional distress, functional impairment or dysfunctional eating) to poor functioning (high emotional distress, functional impairment and dysfunctional eating). The subgroups did not differ on pre-surgical weight, and did not differ from morbidly obese groups not seeking surgery. For the surgery group, regardless of pre-surgery psychological profile, VBG produced significant weight loss, maintained at 1 year after surgery. As well, surgery resulted in significant improvements in quality of life and psychological adjustment, especially in the profile group initially presenting with psychological disturbance. CONCLUSION: There was no evidence to suggest that those with pre-surgical psychological difficulties did more poorly with VBG. These data call into question screening out individuals with psychological problems from gastroplasty surgery. Furthermore, psychological difficulties, if they exist, appear more related to the nature of morbid obesity than to the character of the individual. Psychological difficulties pre-surgery were normalized following surgery.

Adolescent↗
PubMed1999

Therapist competence ratings in relation to clinical outcome in cognitive therapy of depression.

This study reports on the relationship of therapist competence to the outcome of cognitive-behavioral treatment in the National Institute of Mental Health Treatment of Depression Collaborative Research Program. Outpatients suffering from major depressive disorder were treated by cognitive-behavioral therapists at each of 3 U.S. sites using a format of 20 sessions in 16 weeks. Findings provide some support for the relationship of therapist competence (as measured by the Cognitive Therapy Scale) to reduction of depressive symptomatology when controlling for therapist adherence and facilitative conditions. The results are, however, not as strong or consistent as expected. The component of competence that was most highly related to outcome is a factor that reflects the therapist's ability to structure the treatment.

Adult↗
PubMed1999

The Obesity Adjustment Survey: development of a scale to assess psychological adjustment to morbid obesity.

OBJECTIVE: To develop a reliable and valid measure of distress, related to extreme obesity. DESIGN: Items related to distress over obesity were selected from the literature, clinical experience and from input provided by a gastroplasty patient support group. The items were assessed in a longitudinal study, with the body mass index (BMI) and psychological assessment occurring 2-6 months prior to, and 12 months following, gastroplasty surgery. SUBJECTS: 81 females and eight males (mean age 35.9 y) who had been accepted for gastroplasty surgery. All but two of the patients had BMIs > 40 (Mean = 48.11, s.d. = 6.84). MEASUREMENTS: BMIs were calculated using weight and height. Psychological characteristics were assessed using the Mental Health Inventory (MHI), the Sickness Impact Profile (SIP), and the Eating Inventory (EI). Demographic information was collected with a questionnaire. RESULTS: Attempts to factor analyse the 95 item questionnaire were unsuccessful. Alternatively, a shorter, 20 item questionnaire was developed. The questionnaire shows good test-retest reliability (r = 0.867), good internal consistency (coefficient alpha = 0.719), good face and construct validity, and is sensitive to pre-post surgical change. CONCLUSIONS: The Obesity Adjustment Survey (OAS) may be useful as a brief measure of distress in obese individuals. This measure can be used to index the psychological impact of gastroplasty surgery on psychological functioning, and can be used in future research as a disease-specific measure to predict success of surgery.

Adaptation, Psychological↗
PubMed1995

Quality of life in inflammatory bowel disease: the interaction of disease activity with psychosocial function.

OBJECTIVES: To evaluate the disease-specific and psychological factors that influence quality of life (QOL) in patients with inflammatory bowel disease (IBD) as measured by the recently developed IBD disease-specific QOL measure the Inflammatory Bowel Disease Questionnaire (IBDQ). METHODS: Twenty-two patients (eight males and 14 females) were studied, 16 with Crohn's disease and six with ulcerative colitis (mean age 32 yr). Patients' disease activity was measured with the Dutch Crohn's activity index and the St. Mark's colitis activity index, and QOL was measured by the IBDQ. All patients completed self-report questionnaires for psychological function, which included the Sickness Impact Profile (SIP), the Symptom Checklist-90-R (SCL), and the Self-Control Schedule (SCS). RESULTS: By combining the psychological measures and the disease activity into a single variable, this composite variable significantly predicted QOL (r = 0.53, p < 0.02), but disease activity alone did not predict overall QOL. Improved psychosocial functioning (Sickness Impact Profile) predicted greater overall QOL (IBDQ total: r = -0.49, p < 0.05) and better social functioning (r = -0.65, p < 0.01). Greater psychological distress (SCL) and disease activity predicted more systemic symptoms [SCL-Positive Symptom Total (PST): r = -0.48, p < 0.05; disease activity: r = -0.65, p < 0.03) and poorer emotional functioning (SCL-PST: r = minus] 0.75, p < 0.001; disease activity: r = -0.82, p < .03). Disease type, gender, age of onset, and psychological coping (SCS) were not predictive of disease-specific QOL, but coping (SCS) was significantly correlated with psychological distress (r = -0.58, p < 0.05 for the SCL-90-PST). CONCLUSION: This study confirms the importance of psychological functioning in determining QOL of IBD patients and must be considered jointly with disease activity.

Adaptation, Psychological↗
PubMed1985

Reliability of a measure of the quality of cognitive therapy.

This study investigates some of the psychometric properties of the Cognitive Therapy Scale (CTS) using a sample of experienced psychotherapists. Four raters, experienced in cognitive therapy, rated a total of 21 independent, videotaped psychotherapy sessions, and provided ratings along the dimensions of therapist competence measured by the CTS. Analyses included item intercorrelations, item-total correlations, and two assessments of inter-rater reliability. Inter-rater reliabilities showed a significant positive correlation for all items of the CTS and the internal reliability was strong. The potential of the CTS to address both the competency of cognitive therapists and trainees is discussed.

Behavior Therapy↗