Clinical response to varying pollen exposure in allergic rhinitis in children in The Netherlands.

BACKGROUND: Allergic rhinitis (AR) affects 10-15% of children. Symptoms in seasonal AR are influenced by pollen exposure. Pollen counts vary throughout the pollen season and therefore, symptom severity fluctuates. This study investigates the correlation between pollen concentration and symptom load in children with AR in The Netherlands. METHODS: A secondary analysis was performed in a study determining the most effective treatment for children with seasonal AR. Symptoms were measured during three months in 2013 and 2014 using a daily symptom diary. The pollen concentration was measured with a Hirst type volumetric spore trap sampler. A correlation coefficient was calculated for the correlation between the pollen concentration and the mean daily symptom score. The study protocol was approved by the medical ethical review committee of the Erasmus MC and is incorporated in the International Clinical Trials Registry Platform (EUCTR2012-001,591-11-NL). RESULTS: In 2014, the correlation coefficient for birch pollen concentration and symptom score was 0.423 (p = 0.000). The correlation coefficient for grass pollen concentration and symptom score was 0.413 (p = 0.000) and 0.655 (p = 0.000) in 2013 and 2014, respectively. A delayed correlation between the birch pollen concentration and the symptom scores was seen up to two days after the pollen measurement (0.151, p = 0.031). For grass pollen this effect lasted up to three days after the pollen measurement (0.194, p = 0.000). CONCLUSION: We found comparable correlations between symptom score and pollen concentration as found by EAACI. Birch and grass pollen have an elongated influence on symptom score of several days. This implies patients need to continue on demand medication longer after a measured pollen peak.

Patient Characteristics and General Practitioners' Advice to Stop Statins in Oldest-Old Patients: a Survey Study Across 30 Countries.

BACKGROUND: Statins are widely used to prevent cardiovascular disease (CVD). With advancing age, the risks of statins might outweigh the potential benefits. It is unclear which factors influence general practitioners' (GPs) advice to stop statins in oldest-old patients. OBJECTIVE: To investigate the influence of a history of CVD, statin-related side effects, frailty and short life expectancy, on GPs' advice to stop statins in oldest-old patients. DESIGN: We invited GPs to participate in this case-based survey. GPs were presented with 8 case vignettes describing patients > 80 years using a statin, and asked whether they would advise stopping statin treatment. MAIN MEASURES: Cases varied in history of CVD, statin-related side effects and frailty, with and without shortened life expectancy (< 1 year) in the context of metastatic, non-curable cancer. Odds ratios adjusted for GP characteristics (ORadj) were calculated for GPs' advice to stop. KEY RESULTS: Two thousand two hundred fifty GPs from 30 countries participated (median response rate 36%). Overall, GPs advised stopping statin treatment in 46% (95%CI 45-47) of the case vignettes; with shortened life expectancy, this proportion increased to 90% (95CI% 89-90). Advice to stop was more frequent in case vignettes without CVD compared to those with CVD (ORadj 13.8, 95%CI 12.6-15.1), with side effects compared to without ORadj 1.62 (95%CI 1.5-1.7) and with frailty (ORadj 4.1, 95%CI 3.8-4.4) compared to without. Shortened life expectancy increased advice to stop (ORadj 50.7, 95%CI 45.5-56.4) and was the strongest predictor for GP advice to stop, ranging across countries from 30% (95%CI 19-42) to 98% (95% CI 96-99). CONCLUSIONS: The absence of CVD, the presence of statin-related side effects, and frailty were all independently associated with GPs' advice to stop statins in patients aged > 80 years. Overall, and within all countries, cancer-related short life expectancy was the strongest independent predictor of GPs' advice to stop statins.

Defining trajectories in older adults with back pain presenting in general practice.

BACKGROUND: although back pain is a frequently recurring disorder, the course of back pain remains uncertain. Therefore, this study aimed to identify different trajectories in older adults with back pain who presented in general practice and to determine which baseline characteristics are associated with these trajectories. METHODS: the BACE study is a prospective cohort study including 675 patients (aged >55 years) with back pain who consulted a general practitioner; patients were followed for 3 years. Latent class growth analysis was used to identify different trajectories in back pain severity measured at eight different time points. A multinomial regression analysis was used to assess variables associated with membership of an identified trajectory. RESULTS: using the different indices of fit and the usefulness of the different trajectories in clinical practice, a 3-class cubic model was determined to be the best model. The three trajectories were defined as 'low pain trajectory', 'high pain trajectory' and 'intermediate pain trajectory'. Baseline variables associated with a higher chance of being in the intermediate or high trajectory were: female gender, higher body mass index, chronic back pain, more disability, lower scores on the SF-36 physical summary scale, and negative expectations of recovery. CONCLUSIONS: three different back pain trajectories were identified in older adults presenting with back pain in general practice. Various baseline characteristics were associated with a higher chance of being in the high or intermediate back pain trajectory. These characteristics might help identify patients at risk for a less favourable outcome.

Are lower urinary tract symptoms associated with cardiovascular disease in the Dutch general population? Results from the Krimpen study.

PURPOSE: To describe the association between lower urinary tract symptoms (LUTS) and cardiovascular diseases (CVD), with adjustment for age and other confounders. We were specifically interested in the possible predictive value of LUTS to the incidence of CVD in the future in the general population. METHODS: We performed post hoc analyses using data from the Krimpen study, a large community-based study in the Netherlands. All men aged 50-75 years, without prostate or bladder cancer, a history of radical prostatectomy, or neurogenic bladder disease, were invited to participate for a response rate of 50%. At baseline, 1,610 men were included. CVD status was compared to LUTS category, using logistic regression, providing odds ratios with 95% confidence intervals (OR 95% CI). For the longitudinal analyses in men without CVD at baseline, hazard ratios (HR) and 95% CI were estimated using Cox proportional hazard models with the occurrence of a CVD as outcome variable. RESULTS: At baseline, 362 men (22%) had a history of CVD. The ORs for CVD for men with moderate to severe LUTS were 2.04 (unadjusted, 95% CI 1.58-2.63), 1.86 (1.43-2.41, adjusted for age), and 1.81 (1.38-2.37, adjusted for age and other confounders). Of the 1,248 CVD-free men, 58 (4.6%) had a CVD event. HRs for moderate to severe LUTS were 0.98 (95% CI 0.52-1.86, unadjusted) and 1.08 (0.57-2.07, adjusted for age, obesity, hypertension, and erectile dysfunction). CONCLUSIONS: The cross-sectional analyses revealed a clear correlation between moderate to severe LUTS and CVD. In longitudinal analyses, however, no significant association was shown.

Development and Validation of Search Filters to Identify Articles on Family Medicine in Online Medical Databases.

Physicians and researchers in the field of family medicine often need to find relevant articles in online medical databases for a variety of reasons. Because a search filter may help improve the efficiency and quality of such searches, we aimed to develop and validate search filters to identify research studies of relevance to family medicine. Using a new and objective method for search filter development, we developed and validated 2 search filters for family medicine. The sensitive filter had a sensitivity of 96.8% and a specificity of 74.9%. The specific filter had a specificity of 97.4% and a sensitivity of 90.3%. Our new filters should aid literature searches in the family medicine field. The sensitive filter may help researchers conducting systematic reviews, whereas the specific filter may help family physicians find answers to clinical questions at the point of care when time is limited.

Analgesic use in older adults with back pain: the BACE study.

BACKGROUND: Older patients with back pain are more likely to visit their general practitioner (GP) and are more likely to be prescribed analgesics. OBJECTIVE: To assess analgesic use in older adults with back pain in general practice. METHODS: The BACE study in the Netherlands is a prospective cohort study. Patients (aged >55 years) with back complaints were recruited when consulting their GP or shortly thereafter. Measurements took place at baseline and at 3- and 6-month follow-up. For medication use, patients were asked if they had used any medication for their back pain in the previous 3 months and, if so, to specify the medication name, dosage used, frequency of usage, and whether the medication was prescribed or purchased over the counter. RESULTS: Of the 1,402 patients who were approached to enter the study, 675 were included. Of these patients, 484 (72%) reported medication use at baseline. Nonsteroidal anti-inflammatory drugs (NSAIDs) (57%) were more often used than paracetamol (49%). Paracetamol was mostly obtained over the counter (69%), and NSAIDs were mostly obtained by prescription (85%). At baseline, patients with severe pain (numerical rating scale score ≥7) used more paracetamol, opioids, and muscle relaxants. Patients with chronic pain (back pain >3 months) used more paracetamol, while patients with a shorter duration of pain used more NSAIDs. During follow-up there was an overall decline in medication use; however, at 3- and 6-month follow-up, 36% and 30% of the patients, respectively, still used analgesics. CONCLUSIONS: In these older adults consulting their GP with back pain, 72% used analgesics at baseline. Despite a decrease in medication use during follow-up, at 3 and 6 months a considerable proportion still used analgesics.

Lessons from the Netherlands for Australia: cross-country comparison of trends in antidepressant dispensing 2013-2021 and contextual factors influencing prescribing.

BACKGROUND: There is concern internationally about increasing antidepressant use. Most antidepressants are prescribed in general practice. The aim of this study was to compare trends in antidepressant dispensing in Australia and the Netherlands over the 9years from 2013 to 2021, and to explore reasons for differences. METHODS: A convergent mixed methods study including analysis of publicly available antidepressant dispensing data obtained from Australia's Pharmaceutical Benefits Scheme and Repatriation Pharmaceutical Benefits Scheme and the Dutch Foundation for Pharmaceutical Statistics and a search of relevant literature to compare contextual factors influencing prescribing were undertaken. RESULTS: In 2013, antidepressant dispensing rates in Australia were nearly twice as high as those in the Netherlands (82.5 versus 44.3DDD/1000/day) and increased to be more than twice as high by 2021 (115.6 versus 48.8DDD/1000/day). Antidepressant dispensing increased by 40% in Australia over the nine study years, but by only 10% in the Netherlands. Our scan of the literature confirms that while population factors, health system structure, and clinical guideline recommendations are largely consistent across the two countries, a multifaceted approach in the Netherlands involving improved access to non-pharmacological alternatives, initiatives targeting safer antidepressant prescribing, and tight regulation of pharmaceutical industry influence on prescribers, has successfully curtailed increasing antidepressant use. CONCLUSIONS: Australia may learn from the Netherlands' approach to redress increasing antidepressant use.

Atopic Dermatitis in Children in the General Population: Baseline Characteristics, Medication Use, and Severity Measures in the Rotterdam Eczema Study.

Background: Real-life data on severity and treatments in children with atopic dermatitis (AD) are needed to evaluate self-management. Objectives: To determine severity and use of topical treatments in children with AD in the general population. Furthermore, we aim to determine agreement and correlation between objective and subjective AD severity measures. Methods: Data were used from the Rotterdam Eczema Study, an observational prospective cohort study with an embedded pragmatic open-label randomized controlled trial. Descriptive statistics were used for baseline characteristics, medication use, and severity. Strength of agreement and correlation were determined using kappa analysis and Pearson correlation. Results: In total, 367 children (mean age 5.7 years) were recruited. The mean eczema area and severity index (EASI) score was 2.1 (±3.2) and mean patient-oriented eczema measure (POEM) score was 10.3 (±6.1). The majority applied emollients on a daily basis (54.9%) and had not used topical corticosteroids (TCSs) over the past week (51%). Based on severity banding of POEM and EASI, 49.9% and 24.9% of the children were undertreated, respectively. No evidence was found for an agreement between EASI and POEM (kappa 0.028, n = 178, P = 0.451). A moderate correlation between POEM, EASI, infants' dermatitis quality of life index, and children's dermatology life quality index was found. POEM showed higher correlation with quality of life (QoL) than EASI. Conclusion: Emollients were used sufficiently in the study population. Based on signs or symptoms, 24.9% and 49.9% of children are undertreated, respectively. POEM scores correlated better with QoL than with EASI scores. We argue that EASI underestimates severity of AD, and treatment based on EASI scores may lead to undertreatment of AD. Treating physicians should be aware of suboptimal use of TCSs.

Reasons for unsuccessful recruitment of children with atopic dermatitis in primary care in the Netherlands to a cohort study with an embedded pragmatic, randomised controlled open-label trial: a survey.

BACKGROUND: The Rotterdam Eczema Study was an observational cohort study with an embedded pragmatic randomised controlled open-label trial. It was conducted in children with atopic dermatitis (AD) in the Dutch primary care system. The objective of the trial was to determine whether a potent topical corticosteroid (TCS) is more effective than a low-potency TCS. OBJECTIVE: We are aiming to communicate transparently about the poor recruitment for the trial part and to explore the reasons why recruitment was weak. DESIGN: We used a survey to find out what patients in the cohort did when they experienced a flare-up. METHODS: Descriptive statistics were used to present the baseline characteristics of participants in the trial and the results of the survey. RESULTS: In total, 367 patients were included in the cohort. Of these, 32 were randomly assigned to a trial treatment; they had a median age of 4.0 years (IQR 2.0-9.8). A total of 69 of the 86 children (80.2%) who could participate in the survey responded. 39 (56.5%) suffered a flare-up during the follow-up (making them potentially eligible for inclusion in the trial). 26 out of 39 (66.7%) increased their use of an emollient and/or TCS themselves. Only 12 of the 39 (30.7%) contacted their general practitioner (GP) as instructed in the study protocol, but 8 out of these 12 did not meet the inclusion criteria for the trial. CONCLUSION: The main reason why cohort participants did not take part in the trial was that they did not contact their GPs when they experienced an AD flare-up. Furthermore, the majority of patients who contacted their GPs did not match the inclusion criteria of the trial. We expect that the lessons learnt from this study will be useful when developing future studies of children with AD in primary care.

Children and young people's consultation rates for psychosocial problems between 2016 and 2021 in the Netherlands.

BACKGROUND: Worldwide, there are concerns about declining mental health of children and young people (CYP). OBJECTIVES: To examine trends in GP consultation rates for psychosocial problems and the impact of the COVID-19 pandemic. METHODS: We performed a population-based cohort study using electronic GP records of CYP (0-24 years) living in the Rotterdam metropolitan area between 2016 and 2021. We calculated monthly consultation rates for psychosocial problems, stratified by age group and sex. We used negative binomial models to model the pre-COVID-19 trend, and estimate expected rates post-COVID-19 onset. We modelled the effect of COVID-19 infection rate and school closure on consultation rates per sex and age group. RESULTS: The cohort increased from 64801 to 92093 CYP between January 2016 and December 2021. Median age was 12.5 years and 49.3% was female. Monthly consultation rates increased from 2,443 to 4,542 consultations per 100,000 patient months over the six years. This trend (RR 1.009, 95%CI 1.008-1.011) started well before the COVID-19 pandemic. Consultation rates of adolescent girls and young women increased most strongly. Between March and May 2020, there was a temporary reduction in consultation rates, whereupon these returned to expected levels. COVID-19 infection rate and school closures showed small but significant associations with consultation rates for psychosocial problems but this did not affect the overall trend. Although consultation rates for psychosocial problems increased, this increment was stable over the entire study period. CONCLUSION: The COVID-19 pandemic did not significantly increase consultation rates for psychosocial problems in CYP. The consultation rates increased, especially in adolescent girls and young women.

CYP' consultation rates for psychosocial problems within general practice almost doubled between 2016 and 2021 in the Rotterdam metropolitan area, the Netherlands.This increase was steady over time and was not affected by the COVID-19 pandemic.Consultation rates in general practice for psychosocial problems increased most strongly in adolescent girls and young women.

Blood pressure measurements for diagnosing hypertension in primary care: room for improvement.

BACKGROUND: In the adult population, about 50% have hypertension, a risk factor for cardiovascular disease and subsequent premature death. Little is known about the quality of the methods used to diagnose hypertension in primary care. OBJECTIVES: The objective was to assess the frequency of use of recognized methods to establish a diagnosis of hypertension, and specifically for OBPM, whether three distinct measurements were taken, and how correctly the blood pressure levels were interpreted. METHODS: A retrospective population-based cohort study using electronic medical records of patients aged between 40 and 70 years, who visited their general practitioner (GP) with a new-onset of hypertension in the years 2012, 2016, 2019, and 2020. A visual chart review of the electronic medical records was used to assess the methods employed to diagnose hypertension in a random sample of 500 patients. The blood pressure measurement method was considered complete if three or more valid office blood pressure measurements (OBPM) were performed, or home-based blood pressure measurements (HBPM), the office- based 30-minute method (OBP30), or 24-hour ambulatory blood pressure measurements (24 H-ABPM) were used. RESULTS: In all study years, OBPM was the most frequently used method to diagnose new-onset hypertension in patients. The OBP-30 method was used in 0.4% (2012), 4.2% (2016), 10.6% (2019), and 9.8% (2020) of patients respectively, 24 H-ABPM in 16.0%, 22.2%, 17.2%, and 19.0% of patients and HBPM measurements in 5.4%, 8.4%, 7.6%, and 7.8% of patients, respectively. A diagnosis of hypertension based on only one or two office measurements occurred in 85.2% (2012), 87.9% (2016), 94.4% (2019), and 96.8% (2020) of all patients with OBPM. In cases of incomplete measurement and incorrect interpretation, medication was still started in 64% of cases in 2012, 56% (2016), 60% (2019), and 73% (2020). CONCLUSION: OBPM is still the most often used method to diagnose hypertension in primary care. The diagnosis was often incomplete or misinterpreted using incorrect cut-off levels. A small improvement occurred between 2012 and 2016 but no further progress was seen in 2019 or 2020. If hypertension is inappropriately diagnosed, it may result in under treatment or in prolonged, unnecessary treatment of patients. There is room for improvement in the general practice setting.

Back complaints in older adults: prevalence of neuropathic pain and its characteristics.

OBJECTIVE: Neuropathic symptoms are reported in 16-55.6% of patients with back pain. Studies were performed in various populations; however, none focused on older adults. The aim of the study was to assess prevalence of neuropathic pain in older adults with back pain. METHODS: Prevalence of neuropathic pain, measured with the Dolour Neuropathique en 4 questions (DN4), was assessed in the Back Complaints in the Elders study (Netherlands). Patients (>55 years) consulting their general practitioner with a new episode of back complaints were included. Two DN4-versions were used: one based on interview plus physical examination, the other based on interview alone. In the interview plus physical examination version, patients' and complaint characteristics were compared between groups with different scores (0, 1, 2, 3, and ≥4). The DN4 interview-version compared patients with negative and positive scores. RESULTS: Of the 261 included patients available for analysis were 250 patients (95.8%) with the DN4 interview plus physical examination, and 259 patients (99.2%) with the DN4 interview. In DN4 interview plus physical examination (N = 250), five patients (2%) scored positive (score ≥4). Higher score was associated with pain radiating below the knee (P < 0.001) and use of paracetamol (P = 0.02). In DN4 interview (N = 259), 29 (11.2%) patients scored positive (score ≥3). Positive score was associated with higher body mass index (P = 0.01), pain radiating below the knee (P = 0.001), and use of paracetamol (P = 0.002). CONCLUSIONS: In older adults with back pain presenting with a new episode in primary care, prevalence of neuropathic pain is low and seems to be associated with pain radiating below the knee, use of paracetamol, and higher body mass index.

A systematic review of questionnaires measuring asthma control in children in a primary care population.

Several questionnaires are used to measure asthma control in children. The most appropriate tool for use in primary care is not defined. In this systematic review, we evaluated questionnaires used to measure asthma control in children in primary care and determined their usefulness in asthma management. Searches were performed in the MEDLINE, Embase, Web of Science, Google Scholar and Cochrane databases with end date 24 June 2022. The study population comprised children aged 5-18 years with asthma. Three reviewers independently screened studies and extracted data. The methodological quality of the studies was assessed, using the COSMIN criteria for the measurement properties of health status questionnaires. Studies conducted in primary care were included if a minimum of two questionnaires were compared. Studies in secondary or tertiary care and studies of quality-of-life questionnaires were excluded. Heterogeneity precluded meta-analysis. Five publications were included: four observational studies and one sub-study of a randomized controlled trial. A total of 806 children were included (aged 5-18 years). We evaluated the Asthma Control Test (ACT), childhood Asthma Control Test (c-ACT), Asthma APGAR system, NAEPP criteria and Royal College of Physicians' '3 questions' (RCP3Q). These questionnaires assess different symptoms and domains. The quality of most of the studies was rated 'intermediate' or 'poor'. The majority of the evaluated questionnaires do not show substantial agreement with one another, which makes a comparison challenging. Based on the current review, we suggest that the Asthma APGAR system seems promising as a questionnaire for determining asthma control in children in primary care.

Anxiety problems in children and adolescents: a population-based cohort study on incidence and management in Dutch primary care.

BACKGROUND: Due to a large strain on youth mental health care, general practice is suggested as an alternative treatment setting for children and adolescents with anxiety problems. However, research on the current management of these children and adolescents within general practice is scarce. AIM: To investigate the incidence of coded anxiety in general practice using the International Classification of Primary Care (ICPC), and GPs' management of children and adolescents presenting with anxiety problems. DESIGN AND SETTING: Population-based cohort study using electronic medical records of 51 212 children (aged 0-17 years) in primary care in the Rotterdam region between 1 January 2012 and 31 December 2018. METHOD: Incidence of ICPC codes for anxiety were calculated, then the characteristics of children and adolescents consulting their GP with anxiety and the GPs' management were assessed qualitatively using quantitative content analysis. RESULTS: Incidence of ICPC codes for anxiety in children and adolescents was 5.36 (95% confidence interval [CI] = 5.02 to 5.71) per 1000 person-years. Adolescent females had the highest incidence with 14.01 (95% CI = 12.55 to 15.58) per 1000 person-years. Of the 381 children and adolescents consulting their GP with an initial anxiety problem (median age 13.3 years, 40.4% male), GPs referred 59.3% to mental health care in the first year while 26.5% of children and adolescents were managed by a specialised practice nurse within general practice. Of the 381 children and adolescents, 10.5% received psychiatric medication during the first year, with the trend being for increased prescriptions during adolescence. CONCLUSION: In general practice children and adolescents frequently received one of two ICPC codes for anxiety, especially adolescent females. Most presenting to their GP with anxiety problems are referred externally or seen by a specialised practice nurse within general practice.

General practitioners' explanation and advice on childhood eczema and factors influencing their treatment strategy: A qualitative study.

Background: Atopic dermatitis (AD) is common in children and the majority of children can be treated by the general practitioner (GP). Various factors can influence the GP's treatment strategy and may lead to less effective treatment. The objective is to gain insight into the treatment goal, treatment strategy, explanation and advice given by GPs when dealing with AD in children and to explore which factors play a role in the choice of pharmacological treatment. Methods: Semi-structured interviews in primary care in the Netherlands were audio-recorded and transcribed. All data were analysed according to the six-steps approach of inductive thematic analysis. Results: We interviewed 16 GPs. Treatment goals mainly focussed on the short term. GPs discussed the importance of emollient use and emphasised emollients as the basis of treatment. We found that several factors played a role in prescribing topical corticosteroids (TCS); severity of the AD, age of the child, skin type, corticophobia among parents and GPs, experience of side effects and dermatological experience. GPs reported giving limited advice about the use of TCS and prescribed medication that is not recommended by the guideline. Conclusion: Various factors seem to influence GPs' treatment strategy for AD in children. More attention and education about the use and safety of TCS in children during GP training, continuous medical education, probably improve treatment in line with guidelines and can lead to more confidence and knowledge about TCS among GPs, which ultimately may improve the education and self-management of patients.

GPs' and practice nurses' views on their management of paediatric anxiety problems: an interview study.

BACKGROUND: Anxiety problems are common in both children and adolescents, and many affected children do not receive appropriate treatment. Understaffing of mental healthcare services and long waiting lists form major barriers. In the Netherlands, practice nurses have been introduced into general practice to support general practitioners (GPs) in the management of psychosocial problems. In this study we investigated the views of GPs and practice nurses on their management of paediatric anxiety problems. METHODS: We performed an exploratory study using semi-structured interviews with 13 GPs and 13 practice nurses in the greater Rotterdam area in 2021. Interviews were transcribed and coded into topics, which were categorized per research question. RESULTS: In their management of paediatric anxiety problems, both GPs and practice nurses try to explore the case and the needs of affected children and their parents. GPs rarely follow up affected children themselves. They often refer the child, preferably to their practice nurse. Practice nurses regularly initiate follow-up consultations with affected children themselves. Practice nurses reported using a variety of therapeutic techniques, including elements of cognitive behavioural therapy. In more severe cases, practice nurses refer the child to external mental healthcare services. GPs reported being satisfied with their collaboration with practice nurses. Both GPs and practice nurses experience significant barriers in the management of paediatric anxiety problems. Most importantly, long waiting lists for external mental health care were reported to be a major difficulty. Improving cooperation with external mental healthcare providers was reported to be an important facilitator. CONCLUSIONS: In their management of paediatric anxiety problems, GPs and practice nurses experience major challenges in the cooperation with external mental healthcare providers and in the long waiting lists for these services. GPs and practice nurses believe that thanks to their shared approach more children with anxiety problems can remain treated in general practice. Future research is needed to evaluate the treatment outcomes of the shared efforts of GPs and practice nurses in their management of paediatric anxiety problems.

The natural history and predictive factors of voided volume in older men: the Krimpen Study.

PURPOSE: Although functional bladder capacity, as expressed by maximum voided volume and other frequency-volume chart parameters, are important determinants of lower urinary tract symptoms, to our knowledge no population based data are available on changes in voided volume. We determined changes in and determinants of voided volume and voiding frequency with advancing age and with time, as measured by frequency-volume charts. MATERIALS AND METHODS: We performed a longitudinal, population based study in 1,688 men 50 to 78 years old with followup at 2.1, 4.2 and 6.5 years. Data were obtained using frequency-volume charts for maximum, 24-hour and average voided volume, and 24-hour voiding frequency as well as physical and urological measurements, and self-administered questionnaires. We used a linear mixed effect model to determine factors predicting volume changes. RESULTS: Median maximum and average voided volume decreased with time from 400 to 380 and 245 to 240 ml, respectively, and were smaller in older age groups while 24-hour voided volume showed no change. The 24-hour voiding frequency increased with time and with advancing age. Maximum, 24-hour and average voided volumes were positively related to alcohol intake. Maximum and average voided volumes were negatively related to higher age at baseline and the passage of time. Hypertension, diuretics and post-void residual volume were related to higher 24-hour voided volume. CONCLUSIONS: In older men maximum and average voided volume show a small but statistically significant decrease with time and with advancing age while 24-hour voided volume does not. Factors predicting the change in maximum or average voided volume are alcohol intake and higher age.

Corticosteroid injections for greater trochanteric pain syndrome: a randomized controlled trial in primary care.

PURPOSE: We undertook a study to evaluate the effectiveness of corticosteroid injections in primary care patients with greater trochanteric pain syndrome (GTPS). METHODS: We evaluated the effect of corticosteroid injections compared with expectant treatment (usual care) in a pragmatic, multicenter, open-label, randomized clinical trial in the Netherlands. Patients (aged 18 to 80 years) with GTPS visiting 81 participating primary care physicians were randomly allocated to receive either local corticosteroid injections (n = 60) or usual care (n = 60). Primary outcomes of pain severity (numerical rating scale 0 to 10) and recovery (yes or no total or major recovery) were evaluated at 3-month and 12-month follow-up visits. Adverse events were collected at 6 weeks. RESULTS: At the 3-month follow-up visit, 34% of the patients in the usual care group had recovered compared with 55% in the injection group (adjusted OR = 2.38; 95% CI, 1.14-5.00, number needed to treat = 5). Pain severity at rest and on activity decreased in both groups, but the decrease was greater in the injection group, for an adjusted difference in pain at rest of 1.18 (95% CI, 0.31-2.05) and in pain with activity of 1.30 (95% CI, 0.32-2.29). At the 12-month follow-up, 60% of the patients in the usual care group had recovered compared with 61% in the injection group (OR = 1.05; 95% CI, 0.50-2.27). Pain severity at rest and on activity decreased in both groups and the 12-month follow-up showed no significant differences, with adjusted differences of 0.14 (95% CI, -0.75 to 1.04) for pain at rest and 0.45 (95% CI, -0.55 to 1.46) for pain with activity. Aside from a short period with superficial pain at the site of the injection, no differences in adverse events were found. CONCLUSION: In this first randomized controlled trial assessing the effectiveness of corticosteroid injections vs usual care in GTPS, a clinically relevant effect was shown at a 3-month follow-up visit for recovery and for pain at rest and with activity. At a 12-month follow-up visit, the differences in outcome were no longer present.

Cost-effectiveness of exercise therapy versus general practitioner care for osteoarthritis of the hip: design of a randomised clinical trial.

BACKGROUND: Osteoarthritis (OA) is the most common joint disease, causing pain and functional impairments. According to international guidelines, exercise therapy has a short-term effect in reducing pain/functional impairments in knee OA and is therefore also generally recommended for hip OA. Because of its high prevalence and clinical implications, OA is associated with considerable (healthcare) costs. However, studies evaluating cost-effectiveness of common exercise therapy in hip OA are lacking. Therefore, this randomised controlled trial is designed to investigate the cost-effectiveness of exercise therapy in conjunction with the general practitioner's (GP) care, compared to GP care alone, for patients with hip OA. METHODS/DESIGN: Patients aged ≥ 45 years with OA of the hip, who consulted the GP during the past year for hip complaints and who comply with the American College of Rheumatology criteria, are included. Patients are randomly assigned to either exercise therapy in addition to GP care, or to GP care alone. Exercise therapy consists of (maximally) 12 treatment sessions with a physiotherapist, and home exercises. These are followed by three additional treatment sessions in the 5th, 7th and 9th month after the first treatment session. GP care consists of usual care for hip OA, such as general advice or prescribing pain medication. Primary outcomes are hip pain and hip-related activity limitations (measured with the Hip disability Osteoarthritis Outcome Score [HOOS]), direct costs, and productivity costs (measured with the PROductivity and DISease Questionnaire). These parameters are measured at baseline, at 6 weeks, and at 3, 6, 9 and 12 months follow-up. To detect a 25% clinical difference in the HOOS pain score, with a power of 80% and an alpha 5%, 210 patients are required. Data are analysed according to the intention-to-treat principle. Effectiveness is evaluated using linear regression models with repeated measurements. An incremental cost-effectiveness analysis and an incremental cost-utility analysis will also be performed. DISCUSSION: The results of this trial will provide insight into the cost-effectiveness of adding exercise therapy to GPs' care in the treatment of OA of the hip. This trial is registered in the Dutch trial registry http://www.trialregister.nl: trial number NTR1462.

Back complaints in the elders (BACE); design of cohort studies in primary care: an international consortium.

BACKGROUND: Although back complaints are common among older people, limited information is available in the literature about the clinical course of back pain in older people and the identification of older persons at risk for the transition from acute back complaints to chronic back pain. The aim of this study is to assess the course of back complaints and identify prognostic factors for the transition from acute back complaints to chronic back complaints in older people who visit a primary health care physician. METHODS/DESIGN: The design is a prospective cohort study with one-year follow-up. There will be no interference with usual care. Patients older than 55 years who consult a primary health care physician with a new episode of back complaints will be included in this study. Data will be collected using a questionnaire, physical examination and X-ray at baseline, and follow-up questionnaires after 6 weeks and 3, 6, 9 and 12 months. The study 'Back Complaints in the Elders' (BACE) will take place in different countries: starting in the Netherlands, Brazil and Australia. The research groups collaborate in the BACE consortium. The design and basic objectives of the study will be the same across the studies. DISCUSSION: This consortium is a collaboration between different research groups, aiming to provide insight into the course of back complaints in older people and to identify prognostic factors for the transition from acute back complaints to chronic back complaints in older persons. The BACE consortium allows to investigate differences between older people with back complaints and the health care systems in the different countries and to increase the statistical power by enabling meta-analyses using the individual patient data. Additional research groups worldwide are invited to join the BACE consortium.