Search PubMed⌕ Search

Biomedical subjects

G Andrews

Publications and source records attributed to G Andrews.

At least 217 records · Page 12Linked to original sources

Change in danger cognitions in agoraphobia and social phobia during treatment.

Cognitive theories of anxiety emphasise the differences in anxious concerns and symptomatology across the anxiety disorders. The nature and extent of danger appraisal in social phobics and agoraphobics was examined and compared with that of a non-phobic group of adult stutterers. All groups were measured before, during and after treatment. Results showed that the form of danger appraisal was related to the fears exhibited, reductions in the particular appraisals of danger were associated with reductions in specific fears, and specific patterns of danger appraisal emerged. Agoraphobics' concerns with physical and loss of control danger normalized during treatment. Despite considerable and significant improvement, social phobics continued to have social evaluation danger scores significantly higher than the control group at the end of treatment. While cognitive behavioural therapy does change relevant fear cognitions, it appears that the intransigence of social phobic concerns about negative evaluations may require extra time and/or therapy.

Adult↗

Comorbidity in the anxiety disorders: the use of a life-chart approach.

Findings of comorbidity across the anxiety and depressive disorders have implications for aetiology, diagnosis and treatment. This paper describes a method to assess one aspect of the relationship between comorbid disorders: the degree to which one illness experience is believed to be caused by the earlier experience of a different illness. The life-chart method involves the use of a semi-structured interview to document the lifetime course of disorders. The method was reliable in a sample of patients treated at a specialized treatment unit for anxiety disorders. Patients fell into three major groupings: those with one disorder only (19%); those who fulfilled criteria for two or more disorders, but with one disorder primary and other disorders secondary to it (55%); and those who fulfilled criteria for two or more independent disorders (26%).

Adult↗

Personality disorder in obsessive compulsive disorder: a controlled study.

In order to assess Axis II pathology in Obsessive Compulsive Disorder patients as compared to other anxiety disorder patients, the Personality Disorder Examination was administered to 258 anxiety disorder patients. In contrast to a number of recent reports, a low rate of personality disorder diagnoses were found in the OCD sample as well as the anxiety disorder control subjects. The findings of the current investigation are discussed in terms of state-trait confounding.

Agoraphobia↗

Identifying personality disorders: towards the development of a clinical screening instrument.

The study objective was to identify a set of personality disorder (PD) criteria from the DSM PD diagnostic sets that can be used to detect subjects with an increased likelihood of having a PD diagnosis. In a series of outpatients evaluated systematically in two waves for every criteria item for 12 DSM-III-R PDs, stepwise logistic regression identified 45 criteria as discriminative for their specific PDs, which are selected for further analysis to assess their ability to discriminate for any PD. Receiver operating characteristic (ROC) analysis is used to evaluate their discriminative power in an independent conjoined sample (N = 1,342) from six centers that assessed every PD criteria item by structured instrument (Structured Clinical Interview for DSM-III-R PDs [SCID-II, Personality Disorder Examination [PDE], and Structured Interview for DSM-III-R PDs [SIDP-R]). The cutoff that maximizes information gain is used to determine the diagnostic threshold (DT). Initially, 15 of 45 criteria are identified. At the 0.43 PD prevalence, a DT of 2 or more of the 15 PD criteria across samples is optimal. The maximum information gain (MIG) is .42 bits, and the AUR is 0.94+/-.007. Other performance indices at this cutoff are .90 sensitivity, .84 specificity, .81 positive predictive power (PPP), .91 negative predictive power (NPP), and .86 hit rate (HR). Taken collectively, the 15 PD criteria selected by the data reduction techniques suggest a narrowed set to be assessed in screening for the presence or absence of any PD with comparable or better psychometric properties than other tests routinely used for diagnosing medical and psychiatric disorders. If specific PD categorization is needed, a second-step comprehensive assessment should follow.

Algorithms↗

Validity of the Composite International Diagnostic Interview (CIDI) psychosis module in a psychiatric setting.

This study aimed to test the procedural validity of the psychosis module of the Composite International Diagnostic Interview (CIDI) by comparing it with diagnostic checklists completed by experienced clinicians. Seventy-five subjects were interviewed using the interviewer-administered version of the CIDI. Their clinician(s) then completed diagnostic checklists for DSMIV and ICD10 diagnoses of schizophrenia. Agreement was measured at the diagnostic, criterion and subcriterion levels. The validity standard (diagnostic checklist) was shown to be reliable with interrater agreement between the clinicians for the diagnosis of schizophrenia being excellent (kappa = 0.82 for DSMIV and kappa = 0.71 for ICD10). The agreement between the CIDI and the clinician checklists varied with sensitivities for DSMIV subcriteria ranging from 0.18 (negative symptoms) to 0.93 (bizarre delusions) and specificities ranging from 0.38 (catatonia) to 0.95 (disorganised speech). A similar pattern was found for ICD10 subcriteria: sensitivity varied from 0.19 (neologisms) to 0.90 (persistent delusions) and specificity varied from 0.39 (catatonia) to 0.95 (negative symptoms). The poorest levels of agreement were found for symptoms requiring interviewer judgement. The CIDI showed good agreement with clinician checklist diagnoses when the criteria were based on questions asked of the subjects. When the interviewer was required to make judgement of behaviours, the agreement between the CIDI and the clinician checklists was lower, resulting in overall poor agreement between the CIDI and the clinician checklists. Suggestions for improving the validity of the psychosis module of the CIDI are made.

Adult↗

Disability measurement in the anxiety disorders: comparison of three brief measures.

General measures of disablement are powerful tools in clinical settings as they provide a link between clinic and community populations and allow cross-disorder comparisons. Because of their generic nature, they allow the transmittal of comprehensible health planning information to decision makers. We located no studies of such general disability measures in the anxiety disorders and decided to examine the properties of three brief generic measures in an anxiety disorders clinic. Consecutive attenders (N=168) were administered the Medical Outcomes Study Short Form-12 item (SF-12), the Brief Disability Questionnaire (BDQ), and a measure of the number of disability days due to health over the past 4 weeks. These measures were compared on their ability to discriminate within the clinic and in comparison to a representative community group. The mental health scale of the SF-12 was the most sensitive of the generic measures to differences in functioning, and is recommended as a measure of such for people with anxiety disorders. Attenders at this anxiety clinic reported high levels of disablement, and normative data on the general measures are provided.

Anxiety Disorders↗

Long-term outcome of panic disorder and social phobia.

The question is addressed as to whether cognitive-behavior treatment delivered as a routine service in a specialist clinic is effective in the long term. Of 124 consecutive patients completing treatment for panic disorder or social phobia, 93 were assessed an average of 2 years following treatment. The treatment produced significant improvement in measures of symptoms, avoidance, and disablement during treatment and further significant improvement during the follow-up. A quarter of participants no longer met diagnostic criteria, had not sought further treatment, and their anxiety had not troubled them since treatment. These findings, although not showing the large treatment effects reported from controlled outcome research, support the effectiveness of cognitive-behavioral interventions in routine care.

Adult↗

A randomized controlled trial of weight reduction and metoprolol in the treatment of hypertension in young overweight patients.

The effects of weight reduction and metoprolol (100 mg, b.d.) in the treatment of hypertension (diastolic blood pressure 90-109 mmHg) in 56 young, overweight patients were investigated in a randomized placebo controlled trial. After a 4-week baseline, subjects were followed up for 21 weeks. In the weight reduction group, the fall in systolic and diastolic blood pressure (13/10 mmHg), associated with a mean group weight loss of 7.4 kg, was greater (P less than 0.001) than that in the placebo group (7/3 mmHg); the fall in diastolic pressure but not systolic pressure was also greater than that in the metoprolol group (10/6 mmHg). At the end of follow-up, 50% of the weight reduction group, 39% of the metoprolol group and 17% of the placebo group had a diastolic blood pressure of less than 90 mmHg. In the weight reduction group there was a fall in total cholesterol and the ratio of total to HDL-cholesterol (P less than 0.001); in the metoprolol group there was a fall in HDL-cholesterol and an increase in the ratio of total to HDL-cholesterol (P less than 0.001). The results suggest that in the first step of treatment for hypertension in overweight patients, modest weight reduction produces significant and clinically important reductions in blood pressure, without incurring the adverse effects on plasma lipids and lipoproteins often associated with the first step of drug therapy.

Adult↗

Contraception: what has changed over the past decade?

The past decade has seen major advances in contraceptive technology. These have resulted in the launch of several new highly effective methods of contraception and also significant improvements in existing methods. The main purpose of this article is to review how the contraceptive field has changed over the past 10 years, explain the new methods that have become available, e.g. hormone-releasing intrauterine systems, hormone implants and female condoms, re-examine existing methods, and mention new research and how this has affected clinical practice over the past decade. When discussing contraception, clients should be given up-to-date and accurate information on currently available methods: their efficacy, advantages, disadvantages and how the method works. As with any other specialty in medicine, nurses offering contraceptive advice should ensure they regularly update their knowledge and are aware of new developments and research in order to facilitate their clients in making an informed choice. New research and developments affect the choices and potentially the health of a large part of the population.

Contraception↗

Serum zinc, chromium, and iron concentrations in dogs with lymphoma and osteosarcoma.

We compared serum concentrations of zinc, chromium, and iron in dogs with cancer to those of normal dogs. Dogs with lymphoma (n = 50) and osteosarcoma (n = 52) were evaluated. Dogs with lymphoma had significantly lower (P = .0028) mean serum zinc concentrations (mean +/- SD; 1.0 +/- 0.3 mg/L) when compared to normal dogs (1.2 +/- 0.4 mg/L). Dogs with osteosarcoma also had lower mean serum zinc concentrations (1.1 +/- 0.4 mg/L), but this difference was not significant (P = .075). Serum chromium concentrations were significantly lower in dogs with lymphoma (2.6 +/- 2.6 microg/L, P = .0007) and osteosarcoma (2.4 +/- 3.1 microg/L, P = .0001) compared to normal dogs (4.7 +/- 2.8 microg/L). Serum iron concentrations and total iron-binding capacity were significantly lower in dogs with lymphoma (110.8 +/- 56.7 microg/dL, P < .0001, and 236.6 +/- 45.6 microg/dL, P < .0001, respectively) and osteosarcoma (99.6 +/- 49.3 microg/dL, P < .0001, and 245.0 +/- 43.8 microg/dL, P = .0011, respectively) when compared to normal dogs (175.1 +/- 56.7 microg/dL and 277.1 +/- 47.4 microg/dL). Mean ferritin concentration was significantly higher in dogs with lymphoma (1291.7 +/- 63.0 microg/L) than in normal dogs (805.8 +/- 291.1 microg/L, P < .0001) and dogs with osteosarcoma (826.5 +/- 309.2 microg/L, P < .0001). Further investigation is needed to explore the clinical significance of these mineral abnormalities in dogs with cancer.

Animals↗