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Biomedical subjects

M Hotopf

Publications and source records attributed to M Hotopf.

69 records · Page 4Linked to original sources
PubMed1998

Temporal relationships between physical symptoms and psychiatric disorder. Results from a national birth cohort.

BACKGROUND: Physical symptoms and psychiatric disorder are associated. We aimed to investigate which comes first. METHODS: Data from the Medical Research Council National Survey of Health and Development, a population-based birth cohort study were used at two time points: 36 and 43 years. Six physical symptoms were reported at both time points. The Present State Examination and Psychiatric Symptom Frequency interviews were administered at 36 and 43 years respectively. Odds ratios corrected for a variety of confounders were used to describe the associations between physical symptoms and psychiatric disorder across these two time points. RESULTS: Psychiatric disorder increased the odds of reporting symptoms 3-7-fold. The relationship strengthened when the outcome was defined as suffering from multiple symptoms. Population attributable risk of psychiatric disorder and subsyndromal disorder in causing multiple somatic symptoms was 40.3%. Prospectively, psychiatric disorder at 36 years was a predictor for five of the six physical symptoms. Three physical symptoms at 36 years predicted new onset of psychiatric symptoms at 43 years. CONCLUSIONS: Psychiatric disorder is strongly related to physical symptoms. The direction of causality may operate in both directions. Assuming a causal relationship, psychiatric disorder (including sub-threshold disorders) could account for at most 40% of cases of multiple physical symptoms.

Abdominal Pain↗
PubMed1997

The prognosis of chronic fatigue and chronic fatigue syndrome: a systematic review.

The prognosis of chronic fatigue syndrome and chronic fatigue has been studied in numerous small case series. We performed a systematic review of all studies to determine the proportion of individuals with the conditions who recovered at follow-up, the risk of developing alternative physical diagnoses, and the risk factors for poor prognosis. A literature search of all published studies which included a follow-up of patients with chronic fatigue syndrome or chronic fatigue were performed. Of 26 studies identified, four studied fatigue in children, and found that 54-94% of children recovered over the periods of follow-up. Another five studies operationally defined chronic fatigue syndrome in adults and found that < 10% of subjects return to pre-morbid levels of functioning, and the majority remain significantly impaired. The remaining studies used less stringent criteria to define their cohorts. Among patients in primary care with fatigue lasting < 6 months, at least 40% of patients improved. As the definition becomes more stringent the prognosis appears to worsen. Consistently reported risk factors for poor prognosis are older age, more chronic illness, having a comorbid psychiatric disorder and holding a belief that the illness is due to physical causes.

Adult↗
PubMed1997

Putting trials on trial--the costs and consequences of small trials in depression: a systematic review of methodology.

STUDY OBJECTIVE: To determine why, despite 122 randomised controlled trials, there is no consensus about whether the selective serotonin reuptake inhibitors or tricyclic and related antidepressants should be used as first line treatment of depression. DESIGN: Systematic review of all RCTs comparing selective serotonin reuptake inhibitors and tricyclic or heterocyclic antidepressants. MAIN RESULTS: The shortcomings identified in the 122 trials were as follows: (1) there was inadequate description of randomisation, (2) the outcomes used were mainly observer rated measurements of depression, and studies failed to use quality of life measures or perform economic evaluations, (3) doses of tricyclic antidepressants were inadequate, (4) generalisability of studies was poor (including a reliance on secondary care settings and inadequate follow up), and (5) there were statistical shortcomings such as low statistical power, failure to use intention to treat analyses, and the tendency to make multiple comparisons. CONCLUSIONS: Future RCTs should be designed to inform policy makers and address these methodological shortcomings.

Antidepressive Agents, Tricyclic↗
PubMed1997

Discontinuation rates of SSRIs and tricyclic antidepressants: a meta-analysis and investigation of heterogeneity.

BACKGROUND: Previous meta-analyses suggest that individuals treated with serotonin-specific reuptake inhibitors (SSRIs) in randomised controlled trials (RCTs) are less likely to discontinue treatment than those on tricyclic antidepressants. This metaanalysis investigates whether this is due to the frequent use in RCTs of older reference tricyclics (imipramine and amitriptyline), which may have worse side-effects than more recent compounds. METHODS: A meta-analysis of RCTs comparing tricyclic and heterocyclic antidepressants with SSRIs in the treatment of depression. RESULTS: The overall odds ratio of discontinuation on tricyclic/heterocyclic antidepressants compared with SSRIs was 0.86 (95% CI 0.78-0.94). The odds ratio for reference tricyclics was 0.82 95% CI 0.72-0.23), newer tricyclics 0.89 (95% CI 0.74-1.06), and heterocyclics 1.02 (95% CI 0.78-1.35). The pooled advantage of SSRIs over tricyclics was maintained whether the population studied consisted of younger adults or only the elderly. No differences in discontinuation rates were detected between the SSRIs. CONCLUSIONS: The lower rate of discontinuation in patients on SSRIs may be due to the use of old tricyclics (which have worse side-effects) as reference compounds. The SSRIs do not show a statistically significant difference in discontinuation rates when compared with newer tricyclics or heterocyclics.

Antidepressive Agents, Tricyclic↗
PubMed1996

Chronic fatigue and minor psychiatric morbidity after viral meningitis: a controlled study.

OBJECTIVE: To test the hypotheses that patients exposed to viral meningitis would be at an increased risk of developing chronic fatigue syndrome and would have an excess of neurological symptoms and physical impairment. METHODS: Eighty three patients were followed up 6-24 months after viral meningitis and a postal questionnaire was used to compare outcome with 76 controls who had had non-enteroviral, non-CNS viral infections. RESULTS: For the 159 patients and controls the prevalence of chronic fatigue syndrome was 12.6%, a rate higher than previously reported from primary care attenders, suggesting that moderate to severe viral infections may play a part in the aetiology of some fatigue states. Those with a history of meningitis showed a slight, non-significant increase in prevalence of chronic fatigue syndrome (OR 1.4; 95% CI 0.5-3.6) which disappeared when logistic regression and analysis was used to correct for age, sex, and duration of follow up (OR 1.0; 95% CI 0.3-2.8). Controls showed marginally higher psychiatric morbidity measured on the general health questionnaire-12 (adjusted OR 0.6; 95% CI 0.3-1.3) Both groups had similar rates of neurological symptoms and physical impairment. The best predictor of chronic fatigue was a prolonged duration time of off work after the illness (OR 4.93, 95% CI 1.3-18.8). The best predictor of severe chronic fatigue syndrome diagnosed by Center for Disease Control criteria was past psychiatric illness (OR 7.82, 95% CI 1.8-34.3). Duration of viral illness, as defined by days in hospital, did not predict chronic fatigue syndrome. CONCLUSIONS: (1) The prevalence of chronic fatigue syndrome is higher than expected for the range of viral illnesses examined; (2) enteroviral infection is unlikely to be a specific risk factor for its development; (3) onset of chronic fatigue syndrome after a viral infection is predicted by psychiatric morbidity and prolonged convalescence, rather than by the severity of the viral illness itself.

Adolescent↗
PubMed1996

Are SSRIs a cost-effective alternative to tricyclics?

BACKGROUND: Selective serotonin reuptake inhibitors (SSRIs) are more expensive than tricyclics. Reports have suggested that SSRIs are cost-effective because they are better tolerated and safer in overdose. METHOD: A systematic review of all randomised controlled trials (RCTs), meta-analyses, and cost-effectiveness studies comparing SSRIs and tricyclic antidepressants (TCAs). RESULTS: None of the RCTs provided an economic analysis and there were methodological problems in the majority which would preclude this approach. Meta-analyses suggest that clinical efficacy is equivalent but slightly fewer patients prescribed SSRIs drop out of RCTs. Cost-effectiveness studies have been based on crude 'modelling' approaches and over-estimate the difference in attrition rates and the cost of treatment failure. It appears impossible to evaluate the economic aspects of suicide because of its rarity. CONCLUSIONS: There is no evidence to suggest that SSRIs are more cost-effective than TCAs. The debate will only be concluded when a prospective cost-effectiveness study is done in the setting of a large primary care based RCT.

Antidepressive Agents, Tricyclic↗
PubMed1995

Are ethical committees reliable?

This paper aims to assess the reliability of Local Research Ethical Committees (LREC), using a genuine research proposal which was sent to six LRECs. The main outcome criteria were modifications demanded by committees and the degree of agreement between them. All but one of the committees demanded some change in the proposal. None of the committees asked for the same changes. Our conclusion is that LRECs are highly variable.

Clinical Protocols↗
PubMed1994

Seasonal affective disorder, environmental hypersensitivity and somatisation.

An association between seasonal affective disorder (SAD) diagnosed according to DSM-III-R criteria and 'environmental hypersensitivity', candida hypersensitivity, and food allergies is reported in two patients. It is suggested that patients with somatisation disorder may present with symptoms of SAD and other media-popularised diagnoses in a form reminiscent of the cases of multiple media-popularised diagnoses.

Activities of Daily Living↗
PubMedDate not supplied

Psychosocial and developmental antecedents of chest pain in young adults.

OBJECTIVE: The objective of this study was to assess the relationships among chest pain, psychiatric disorder, and early experience of ill health. METHODS: The Medical Research Council National Survey of Health and Development is a population-based birth cohort study established in 1946 (N = 5362). During childhood, several informants (parents, teachers, and school physicians) were interviewed or completed questionnaires. Data were available on the subjects' health, the health of their parents, and subjects' personalities. At the age of 36 years, subjects were asked about chest pain using the Rose Angina Questionnaire and completed the Present State Examination, a semistructured psychiatric interview. Subjects were followed for another 7 years (to age 43 years) to determine the outcome of those with chest pain. RESULTS: Chest pain was reported in 17.2% (95% CI = 15.9-18.5%) of respondents at 36 years. The prevalence of exertional chest pain was 1.0% (95% CI = 0.7-1.3%). There was little evidence of coronary heart disease in those with exertional pain at age 36 years when followed for 7 years. However, there was a powerful cross-sectional relationship between psychiatric disorder and chest pain (OR for psychiatric disorder and all chest pain = 3.55, 95% CI = 2.34-5.37; OR for psychiatric disorder and exertional chest pain = 29.08, 95% CI = 6.65-127.15). Childhood risk factors, including poor health reported in parents at age 15 years and fatigue during childhood, were also associated with chest pain. CONCLUSIONS: Chest pain (especially exertional chest pain) is strongly associated with psychiatric disorders in young adults. Childhood experiences, including illness in parents, are associated with subsequent chest pain.

Adolescent↗
PubMedDate not supplied

Somatization disorder.

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Attitude to Health↗