Peter Lucassen

Systematic review of the occurrence of infantile colic in the community

AIMS To assess the occurrence of infantile colic in the community and the need for professional help; and to study the influences of potential determinants of infantile colic. METHODS Surveys were identified by a systematic search in Medline (1966–98) and Embase (1988–98). Retrieved publications were checked for references. Studies selected were community based, prospective, and retrospective surveys on the occurrence of infantile colic published in English, German, French, or Dutch. Occurrence rates were calculated as percentages. Methodological quality of the surveys was assessed by two assessors independently with a standardised criteria list containing items on method of data gathering, definition of colic, and drop out rate. RESULTS Fifteen community based surveys were identified. The methodological quality varied considerably and was generally low. Even the two most methodologically sound prospective studies yielded widely varying cumulative incidence rates of 5–19%. Referral rates or the need to seek help because of crying were consistently lower than occurrence rates for prolonged crying as such. Gender, socioeconomic class, type of feeding, family history of atopy, and parental smoking were not shown to be associated with colic. CONCLUSION Occurrence rates of infantile colic vary greatly according to methodological quality. A considerable number of parents reporting prolonged crying do not seek or need professional help.

Medically unexplained symptoms, somatisation disorder and hypochondriasis: course and prognosis. A systematic review.

OBJECTIVE To study the course of medically unexplained symptoms (MUS), somatisation disorder, and hypochondriasis, and related prognostic factors. Knowledge of prognostic factors in patients presenting persistent MUS might improve our understanding of the naturalistic course and the identification of patients with a high risk of a chronic course. METHODS A comprehensive search of Medline, PsycInfo, CINAHL, and EMBASE was performed to select studies focusing on patients with MUS, somatisation disorder, and hypochondriasis, and assessing prognostic factors. Studies focusing on patients with single-symptom unexplained disorder or distinctive functional somatic syndromes were excluded. A best-evidence synthesis for the interpretation of results was used. RESULTS Only six studies on MUS, six studies on hypochondriasis, and one study on abridged somatisation could be included. Approximately 50% to 75% of the patients with MUS improve, whereas 10% to 30% of patients with MUS deteriorate. In patients with hypochondriasis, recovery rates vary between 30% and 50%. In studies on MUS and hypochondriasis, we found some evidence that the number of somatic symptoms at baseline influences the course of these conditions. Furthermore, the seriousness of the condition at baseline seemed to influence the prognosis. Comorbid anxiety and depression do not seem to predict the course of hypochondriasis. CONCLUSIONS Due to the limited numbers of studies and their high heterogeneity, there is a lack of rigorous empirical evidence to identify relevant prognostic factors in patients presenting persistent MUS. However, it seems that a more serious condition at baseline is associated with a worse outcome.

Detecting Somatoform Disorders in Primary Care With the PHQ-15

PURPOSE Because recognition and management of patients with somatoform disorders are difficult, we wanted to determine the specificity, sensitivity, and the test-retest reliability of the 15-symptom Patient Health Questionnaire (PHQ-15) for detection of somatoform disorders in a high-risk primary care population. METHODS We studied the performance of the PHQ-15 in comparison with the Structured Clinical Interview for the Diagnostic and Statistical Manual-IV Axis I disorders (SCID-I) as a reference standard. From January through September 2006, we approached patients for participation. This study was conducted in primary care settings in the Netherlands. Patients aged between 18 and 70 years were eligible if they belonged to 1 or more of the following groups: (1) patients with unexplained somatic complaints, (2) frequent attenders, and (3) patients with mental health problems. For the SCID-I interview we invited all patients with a PHQ-15 score of 6 or greater and a random sample of 30% of patients with a PHQ-15 score of less than 6. The primary study outcomes were the sensitivity and specificity for the validity and the κ coefficient for the test-retest reliability. RESULTS Of 2,147 eligible patients, 906 (42%) participated (mean age 48 years, 62% female). At a cutoff level of 3 or more severe somatic symptoms during the past 4 weeks, sensitivity was 78% and specificity 71%. The test-retest reliability was 0.60. CONCLUSIONS The PHQ-15 is a valid and moderately reliable questionnaire for the detection of patients in a primary care setting at risk for somatoform disorders.

The accuracy of Patient Health Questionnaire-9 in detecting depression and measuring depression severity in high-risk groups in primary care.

OBJECTIVE Only half of patients with depressive disorder are diagnosed by their family physicians. Screening in high-risk groups might reduce this hidden morbidity. This study aims to determine the accuracy of the Patient Health Questionnaire-9 (PHQ-9) in (a) screening for depressive disorder, (b) diagnosing depressive disorder and (c) measuring the severity of depressive disorder in groups that are at high risk for depressive disorder. METHOD We compared the performance of the PHQ-9 as a screening instrument and as a diagnostic instrument to that of the Structured Clinical Interview for DSM-IV Axis I Disorders (SCID-I) interview, which we used as reference standard. Three high-risk groups of patients were selected: (a) frequent attenders, (b) patients with mental health problems and (c) patients with unexplained complaints. Patients completed the PHQ-9. Next, patients who were at risk for depression (based on PHQ scores) and a random sample of 20% of patients who were not at risk were selected for a second PHQ-9 and the reference standard (SCID-I). We assessed the adequacy of the PHQ-9 as a tool for severity measurement by comparing PHQ-9 scores with scores on the 17-item Hamilton Depression Rating Scale (HDRS-17) in patients diagnosed with a depressive disorder. RESULTS Among 440 patients, both PHQ-9 and SCID-I were analyzed. The test characteristics for screening were sensitivity=0.93 and specificity=0.85; those for diagnosing were sensitivity=0.68 and specificity=0.95. The positive likelihood ratio for diagnosing was 14.2. The HDRS-17 was administered in 49 patients with depressive disorder. The Pearson correlation coefficient of the PHQ-9 to the HDRS-17 was r=.52 (P<.01). CONCLUSION The PHQ-9 performs well as a screening instrument, but in diagnosing depressive disorder, a formal diagnostic process following the PHQ-9 remains imperative. The PHQ-9 does not seem adequate for measuring severity.

The risk for depression comorbidity in patients with COPD.

INTRODUCTION Patients with COPD are believed to have a high risk for the development of depression. However, it remains unclear whether or not there is a temporal relation between COPD and depression, and if the higher risk for depression is a result of having a chronic disease, or is specific for COPD. The aim of this study is to compare the risk for physician-diagnosed depression in patients with COPD, patients with diabetes mellitus (DM), and control subjects without chronic conditions. METHODS The study was a prospective cohort study based on the Continuous Morbidity Registration database. Cox proportional hazards analysis was used to identify the risk of a first episode of depression in patients with COPD compared to patients with DM and matched control subjects without chronic conditions. The following covariates were added to the model: age, the general practice the patient was listed with, socioeconomic status, comorbidity, and gender. All patients with a diagnosis of depression preceding the date of first diagnosis of COPD or DM (dummy date in control subjects) were excluded. RESULTS The hazard ratios for a first episode of depression in the COPD group compared to the DM group and healthy controls subjects were 1.80 (95% confidence interval [CI], 1.16 to 2.81) and 1.68 (95% CI, 1.20 to 2.35), respectively. DISCUSSION We found a temporal relation between COPD and physician-diagnosed depression. Patients with COPD are more likely to have depression diagnosed than patients with DM and control subjects without chronic conditions.

The dieting dilemma in patients with newly diagnosed type 2 diabetes: Does dietary restraint predict weight gain 4 years after diagnosis?

OBJECTIVE To examine whether dieting--restriction of food intake for the purpose of weight control--suppresses or promotes excessive food intake and weight gain. DESIGN A 4-year follow-up study of a dietary intervention in a sample of 97 patients with newly diagnosed Type 2 diabetes. MAIN OUTCOME MEASURES Weight gain, change in body mass index (measured weight in kilograms divided by measured height squared), and intake of energy, as measured with a food frequency questionnaire, were assessed in relation to dietary restraint and tendency to overeat (emotionally or externally induced overeating), as assessed with the Dutch Eating Behaviour Questionnaire. RESULTS Tendency to overeat at diagnosis and not dietary restraint was associated with weight gain and intake of energy 4 years after diagnosis. CONCLUSION These findings suggest that the success of a dietary intervention can be predicted by a subjects tendency toward overeating. The possibility of matched treatment of obesity is discussed on the basis of the distinction between patients with a low versus a high tendency to overeat.

An overview of 19 instruments assessing the doctor-patient relationship: different models or concepts are used.

OBJECTIVES The doctor-patient relationship has been linked to patient satisfaction, treatment adherence, and treatment outcome. Many different instruments have been developed to assess this relationship. The large variety makes it difficult to compare results of different studies and choose an instrument for future research. This review aims to provide an overview of the existing instruments assessing the doctor-patient relationship. STUDY DESIGN AND SETTING We performed a systematic search in PubMed, PsychInfo, EMBASE, and Web of Science for questionnaires measuring the doctor-patient relationship. We appraised each instrument ascertaining the questionnaires focused on the doctor-patient relationship. We compared the content and psychometric characteristics of the instruments. RESULTS We found 19 instruments assessing the doctor-patient relationship. The instruments assess a variety of dimensions and use diverse conceptual models for the doctor-patient relationship. The instruments found also vary in terms to which they have been psychometrically tested. CONCLUSION We have provided an overview of 19 instruments assessing the doctor-patient relationship. The selection of an instrument for future research should be based on the model or conceptual basis of the doctor-patient relationship that is most applicable to the study objectives and the health care field in which it will be applied.

Effects of educational interventions on primary dementia care: A systematic review.

To determine the effects of educational interventions about dementia, directed at primary care providers (PCPs).

Generalist solutions to complex problems: generating practice-based evidence - the example of managing multi-morbidity.

BackgroundA growing proportion of people are living with long term conditions. The majority have more than one. Dealing with multi-morbidity is a complex problem for health systems: for those designing and implementing healthcare as well as for those providing the evidence informing practice. Yet the concept of multi-morbidity (the presence of >2 diseases) is a product of the design of health care systems which define health care need on the basis of disease status. So does the solution lie in an alternative model of healthcare?DiscussionStrengthening generalist practice has been proposed as part of the solution to tackling multi-morbidity. Generalism is a professional philosophy of practice, deeply known to many practitioners, and described as expertise in whole person medicine. But generalism lacks the evidence base needed by policy makers and planners to support service redesign. The challenge is to fill this practice-research gap in order to critically explore if and when generalist care offers a robust alternative to management of this complex problem.We need practice-based evidence to fill this gap. By recognising generalist practice as a ‘complex intervention’ (intervening in a complex system), we outline an approach to evaluate impact using action-research principles. We highlight the implications for those who both commission and undertake research in order to tackle this problem.SummaryAnswers to the complex problem of multi-morbidity won’t come from doing more of the same. We need to change systems of care, and so the systems for generating evidence to support that care. This paper contributes to that work through outlining a process for generating practice-based evidence of generalist solutions to the complex problem of person-centred care for people with multi-morbidity.

Screening for depression in high-risk groups: prospective cohort study in general practice

BACKGROUND Currently only about half of the people who have major depressive disorder are detected during regular health care. Screening in high-risk groups might be a possible solution. AIMS To evaluate the effectiveness of selective screening for major depressive disorder in three high-risk groups in primary care: people with mental health problems, people with unexplained somatic complaints and people who frequently attend their general practitioner. METHOD Prospective cohort study among 2005 people in high-risk groups in three health centres in The Netherlands. RESULTS Of the 2005 people identified, 1687 were invited for screening and of these 780 participated. Screening disclosed 71 people with major depressive disorder: 36 (50.7%) already received treatment, 14 (19.7%) refused treatment and 4 individuals did not show up for an appointment. As a final result of the screening, 17 individuals (1% of 1687) started treatment for major depressive disorder. CONCLUSIONS Screening for depression in high-risk populations does not seem to be effective, mainly because of the low rates of treatment initiation, even if treatment is freely and easily accessible.