Simon Hatcher

Validation of PHQ-2 and PHQ-9 to Screen for Major Depression in the Primary Care Population

PURPOSE Although screening for unipolar depression is controversial, it is potentially an efficient way to find undetected cases and improve diagnostic acumen. Using a reference standard, we aimed to validate the 2- and 9-question Patient Health Questionnaires (PHQ-2 and PHQ-9) in primary care settings. The PHQ-2 comprises the first 2 questions of the PHQ-9. METHODS Consecutive adult patients attending Auckland family practices completed the PHQ-9, after which they completed the Composite International Diagnostic Interview (CIDI) depression reference standard. Sensitivities and specificities for PHQ-2 and PHQ-9 were analyzed. RESULTS There were 2,642 patients who completed both the PHQ-9 and the CIDI. Sensitivity and specificity of the PHQ-2 for diagnosing major depression were 86% and 78%, respectively, with a score of 2 or higher and 61% and 92% with a score 3 or higher; for the PHQ-9, they were 74% and 91%, respectively, with a score of 10 or higher. For the PHQ-2 a score of 2 or higher detected more cases of depression than a score of 3 or higher. For the PHQ-9 a score of 10 or higher detected more cases of major depression than the PHQ determination of major depression originally described by Spitzer et al in 1999. CONCLUSIONS We report the largest validation study of the PHQ-2 and PHQ-9, compared with a reference standard interview, undertaken in an exclusively primary care population. The PHQ-2 score or 2 or higher had good sensitivity but poor specificity in detecting major depression. Using a PHQ-2 threshold score of 2 or higher rather than 3 or higher resulted in more depressed patients being correctly identified. A PHQ-9 score of 10 or higher appears to detect more depressed patients than the originally described PHQ-9 scoring for major depression.

Efficacy and tolerability of selective serotonin reuptake inhibitors compared with tricyclic antidepressants in depression treated in primary care: systematic review and meta-analysis

Abstract Objective: To compare the efficacy and tolerability of tricyclic antidepressants with selective serotonin reuptake inhibitors in depression in primary care. Design: Systematic review and meta-analysis of randomised controlled trials. Data sources: Register of the Cochrane Collaborations depression, anxiety, and neurosis group. Reference lists of initial studies and other relevant review papers. Selected authors and experts. Selection of studies: Studies had to meet minimum requirements on: adequacy of sample size, adequate allocation concealment, clear description of treatment, representative source of subjects, use of diagnostic criteria or clear specification of inclusion criteria, details regarding number and reasons for withdrawal by group, and outcome measures described clearly or use of validated instruments. Main outcome measures: Standardised mean difference of final mean depression scores and relative risk of response when using the clinical global impression score. Relative risk of withdrawing from treatment at any time, and the number withdrawing due to side effects. Results: 11 studies (2951 participants) compared a selective serotonin reuptake inhibitor with a tricyclic antidepressant. Efficacy between selective serotonin reuptake inhibitors and tricyclics did not differ significantly (standardised weighted mean difference, fixed effects 0.07, 95% confidence interval −0.02 to 0.15; z=1.59, P<0.11). Significantly more patients receiving a tricyclic withdrew from treatment (relative risk 0.78, 95% confidence interval 0.68 to 0.90; z=3.37, P<0.0007) and withdrew specifically because of side effects (0.73, 0.60 to 0.88; z=3.24, P<0.001). Most studies included were small and supported by commercial funding. Many studies were of low methodological quality or did not present adequate data for analysis, or both, and were of short duration, typically six to eight weeks. Conclusion: The evidence on the relative efficacy of selective serotonin reuptake inhibitors and tricyclic antidepressants in primary care is sparse and of variable quality. The study setting is likely to be an important factor in assessing the efficacy and tolerability of treatment with antidepressant drugs. What is already known on this topic Previous meta-analyses have included comparatively large numbers of secondary care based studies that indicate no significant differences in efficacy between selective serotonin reuptake inhibitors and tricyclics Previous meta-analyses are conflicting regarding the relative tolerability between selective serotonin reuptake inhibitors and tricyclics, but do suggest a small but significant difference in favour of selective serotonin reuptake inhibitors Such meta-analyses show notable heterogeneity What this study adds Selective serotonin reuptake inhibitors are better tolerated than tricyclics by primary care patients and may be better tolerated by primary care patients than secondary care patients Study setting seems to be important and should be considered before licences are given to specific antidepressants Although there are limited high quality data, available evidence shows that the most commonly prescribed classes of antidepressants in primary care (selective serotonin reuptake inhibitors and tricyclics) are equally effective in the short term for primary care patients, but the literature has many gaps

Assessment and management of medically unexplained symptoms

Many people present with medically unexplained symptoms. For example, more than a quarter of primary care patients in England have unexplained chronic pain, irritable bowel syndrome, or chronic fatigue,1 and in secondary and tertiary care, around a third of new neurological outpatients have symptoms thought by neurologists to be “not at all” or only “somewhat” explained by disease.2 This is not a problem just in developed countries—in Bangladesh, only a third of women with abnormal vaginal discharge had evidence of infection.3 These disorders are important because they are common and they cause similar levels of disability as symptoms caused by disease.4 If not treated properly they can result in large amounts of resources being wasted5 and iatrogenic harm. #### Sources and selection criteria We did a Medline search over the past 10 years using the keywords “somatoform disorders”, “medically unexplained symptoms”, and “randomised controlled trials”. We consulted Clinical Evidence and the Cochrane Collaboration for relevant articles. Most of the content of this article is based on the findings of systematic reviews and randomised controlled trials. Drawing conclusions is difficult because of the various definitions of the disorders used by different authors and the wide variety of symptom severity experienced by people with the same disorder. This is a clinically, conceptually, and emotionally difficult area. Clinical presentations vary greatly—from people who frequently attend the general practitioner with minor symptoms to people with chronic fatigue who are bed bound. What unites them, however, is the difficulty in explaining the presenting symptoms on the basis of any known pathology. Strong feelings are common, with patients often referred to in pejorative terms as “frequent fliers,” “heart sink patients,” “thick folder patients,” or “somatisers.” Doctors may feel that their competence is challenged by their inability to explain the symptoms, and patients may feel that they …

Home-based activity program for older people with depressive symptoms: DeLLITE--a randomized controlled trial.

PURPOSE We wanted to assess the effectiveness of a home-based physical activity program, the Depression in Late Life Intervention Trial of Exercise (DeLLITE), in improving function, quality of life, and mood in older people with depressive symptoms. METHODS We undertook a randomized controlled trial involving 193 people aged 75 years and older with depressive symptoms at enrollment who were recruited from primary health care practices in Auckland, New Zealand. Participants received either an individualized physical activity program or social visits to control for the contact time of the activity intervention delivered over 6 months. Primary outcome measures were function, a short physical performance battery comprising balance and mobility, and the Nottingham Extended Activities of Daily Living scale. Secondary outcome measures were quality of life, the Medical Outcomes Study 36-item short form, mood, Geriatric Depression Scale (GDS-15), physical activity, Auckland Heart Study Physical Activity Questionnaire, and self-report of falls. Repeated measures analyses tested the differential impact on outcomes over 12 months’ follow-up. RESULTS The mean age of the participants was 81 years, and 59% were women. All participants scored in the at–risk category on the depression screen, 53% had a Diagnostic and Statistical Manual of Mental Disorders or International Classification of Diseases, Tenth Revision diagnosis of major depression or scored more than 4 on the GDS-15 at baseline, indicating moderate or severe depression. Almost all participants, 187 (97%), completed the trial. Overall there were no differences in the impact of the 2 interventions on outcomes. Mood and mental health related quality of life improved for both groups. CONCLUSION The DeLLITE activity program improved mood and quality of life for older people with depressive symptoms as much as the effect of social visits. Future social and activity interventions should be tested against a true usual care control.

Burnout and Job Satisfaction in New Zealand Psychiatrists: a National Study

Objectives: To estimate the prevalence of burnout and the level of job satisfaction among New Zealand psychiatrists, and to ascertain relationships between socio-demographic variables, job satisfaction and burnout in the target population. Method: In phase one of the study a postal survey was mailed out to every practising psychiatrist on record as well as all doctors working in psychiatry without specialist qualifications (MOSS). Three questionnaires were used: a socio-demographic questionnaire, the Maslach Burnout Inventory (MBI) and a Job Diagnostic Survey (JSS). Regression analysis was performed on returned data sets using socio-demographic characteristics as explanatory variables and score components of the MBI and JDS as the outcome measures. Results: The results showed that the prevalence of burnout in New Zealand psychiatrists is cause for concern. Two-thirds of all psychiatrists described moderate to severely high levels of emotional exhaustion, with a similar proportion describing low levels of personal accomplishment. Depersonalisation did not appear to be a major problem in the population. Job satisfaction remained relatively high despite the high prevalence of burnout, although there was a relationship between burnout and job satisfaction scores. Conclusions: This study has demonstrated a high prevalence of burnout and factors associated with it among New Zealand psychiatrists. Further research is needed to ascertain why job satisfaction remains high in the presence of burnout, and factors predisposing to, or protective of, burnout.

Problem-solving therapy for people who present to hospital with self-harm: Zelen randomised controlled trial

BACKGROUND Presentations to hospital with self-harm are common, associated with suicide and have an increased mortality, yet there is no accepted effective intervention. AIMS To investigate whether problem-solving therapy would improve outcomes in adults presenting to hospital with self-harm, compared with usual care. METHOD A Zelen randomised controlled trial was conducted in four district health boards in New Zealand. A second hospital presentation with self-harm at 1 year for all episodes, plus separate comparisons of first-time and repeat presentations at the index episode, were the a priori primary outcomes. The trial registration number was ACTRN12605000337673. RESULTS In an intention-to-treat analysis of all randomised patients (n = 1094) there was no significant difference at 12 months in the proportion of people who had presented again with self-harm when comparing all episodes (intervention 13.4%, usual care 14.1%; relative risk reduction RR = 0.05, 95% CI -0.28 to 0.30, P = 0.79) or where the index episode was the first episode (intervention 13.4%, usual care 9.4%, RR = -0.42, 95% CI -1.17 to 0.08, P = 0.37). Where the index episode was repeated self-harm, those who received therapy were less likely to present again with self-harm (intervention 13.5%, usual care 22.1%, RR = 0.39, 95% CI 0.07 to 0.60, number needed to treat 12, P = 0.03). CONCLUSIONS Problem-solving therapy is not recommended for everyone who presents to hospital with self-harm. Among adults with a history of self-harm it may be an effective intervention.

Abnormal illness behaviour in chronic fatigue syndrome and multiple sclerosis.

Abstract Objective: To investigate the presence of abnormal illness behaviour in patients with a diagnosis of chronic fatigue syndrome. Design: A cross sectional descriptive study using the illness behaviour questionnaire to compare illness behaviour scores and illness behaviour profiles of patients with chronic fatigue syndrome and patients with multiple sclerosis. Setting: A multidisciplinary fatigue clinic and a teaching hospital neurology outpatient clinic. Subjects: 98 patients satisfying the Oxford criteria for chronic fatigue syndrome and 78 patients with a diagnosis of multiple sclerosis. Main outcome measure: Responses to the 62 item illness behaviour questionnaire. Results: 90 (92%) patients in the chronic fatigue syndrome group and 70 (90%) in the multiple sclerosis group completed the illness behaviour questionnaire. Both groups had significantly high scores on the general hypochondriasis and disease conviction subscales and significantly low scores on the psychological versus somatic concern subscale, as measured in relation to normative data. There were, however, no significant differences in the subscale scores between the two groups and the two groups had identical illness behaviour profiles. Conclusion: Scores on the illness behaviour questionnaire cannot be taken as evidence that chronic fatigue syndrome is a variety of abnormal illness behaviour, because the same profile occurs in multiple sclerosis. Neither can they be taken as evidence that chronic fatigue and multiple sclerosis share an aetiology. More needs to be known about the origins of illness beliefs in chronic fatigue syndrome, especially as they are important in determining outcome.

Re‐presentation and suicide rates in emergency department patients who self‐harm

Objective:  To investigate adult presentations to North Shore Hospital, Auckland, New Zealand, following deliberate self‐harm, determine re‐presentation and suicide rates and investigate the characteristics of those patients who re‐present.

Burnout in Psychiatrists: An Etiological Model

Objective: This article reviews burnout in psychiatrists. A model of burnout is presented which considers three factors: those which may predispose, precipitate, and perpetuate burnout. Lastly, recommendations are made for future research. Methods: We conducted a selective literature review to expand on two recent systematic reviews to examine the etiology, prevalence, and consequences of burnout in psychiatrists. We distinguish the effects of burnout, depression, and work-related stress. Results: An etiological model for the development of burnout in psychiatrists is described here in terms of an interaction between the predisposing, precipitating, and perpetuating factors. Conclusions: Research is needed on the long-term effects of work-place stress on psychiatrists, to identify possible protective factors, and to utilize this information to inform the design of interventions that protect or mitigate the effects of work-place stress on psychiatrists.

DeLLITE Depression in late life: an intervention trial of exercise. Design and recruitment of a randomised controlled trial

BackgroundPhysical activity shows potential in combating the poor outcomes associated with depression in older people. Meta-analyses show gaps in the research with poor trial design compromising certainty in conclusions and few programmes showing sustained effects.Methods/designThe Depression in Late Life: an Intervention Trial of Exercise (DeLLITE) is a 12 month randomised controlled trial of a physical activity intervention to increase functional status in people aged 75 years and older with depressive symptoms. The intervention involves an individualised activity programme based on goal setting and progression of difficulty of activities delivered by a trained nurse during 8 home visits over 6 months. The control group received time matched home visits to discuss social contacts and networks. Baseline, 6 and 12 months measures were assessed in face to face visits with the primary outcome being functional status (SPPB, NEADL). Secondary outcomes include depressive symptoms (Geriatric Depression Scale), quality of life (SF-36), physical activity (AHS Physical Activity Questionnaire) and falls (self report).DiscussionDue to report in 2008 the DeLLITE study has recruited 70% of those eligible and tests the efficacy of a home based, goal setting physical activity programme in improving function, mood and quality of life in older people with depressive symptomatology. If successful in improving function and mood this trial could prove for the first time that there are long term health benefit of physical activity, independent of social activity, in this high risk group who consume excess health related costs.Trial registrationAustralian and New Zealand Clinical Trials Register ACTRN12605000475640