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Background: In an attempt to control chronic benzodiazepine use and its costs in the Netherlands, health care insurance reimbursement of this medication was stopped on January 1st 2009. This study investigates whether benzodiazepine prescriptions issued by general practitioners changed during the first two years following implementation of this regulation. Methods: Registry study based on data from all benzodiazepine users derived from the Registration Network Groningen. This general practice-based research network collects longitudinal data on the primary care administered to about 30,000 patients. Based on the number of quarterly accumulated prescription days, a comparison was made of benzodiazepine prescriptions issued between 2007/2008 and 2009/2010. Also investigated was which type of user (i.e. short-term or long-term) showed the most change. Results: Information on benzodiazepine prescriptions among 5,200 patients from 16 consecutive trimesters between 2007 and 2010 was available for analysis. A significant reduction in prescription days was observed between 2007/2008 and 2009/2010. Overall, an estimated 1.73 (CI:-1.94 to -1.53; p<0.001) days were less prescribed per trimester after the termination of reimbursement. In particular, short-term users experienced a reduction in prescription days in 2009 and 2010. The number of long-term users decreased by 2.3%, while the number of individuals that did not use increased by 4.2%. Conclusions: A total reduction of almost 14 prescription days was observed over eight trimesters after implementation of the regulation to terminate the reimbursement of benzodiazepines. Short-term users were mainly responsible for this reduction in prescription days in 2009 and 2010. Although long-term users did not alter their benzodiazepine use in 2009 and 2010, the number of long-term users decreased slightly. [ABSTRACT FROM AUTHOR]

Background: As in other societies, pharmaceutical expenditures in the Netherlands are rising every year. As a consequence, needs for cost control are often expressed. One possible solution for cost control could come through increasing generic substitution by pharmacists. We aim to analyse the extent and nature of substitution in recent years and estimate the likelihood of generic or branded substitution in Dutch pharmacies in relation to various characteristics. Methods: We utilized a linked prescription dataset originating from a general practitioner (GP) and a pharmacy database, both from the northern Netherlands. We selected specific drugs of interest, containing about 55,000 prescriptions from 15 different classes. We used a crossed generalized linear mixed model to estimate the effects that certain patient and pharmacy characteristics as well as timing have on the likelihood that a prescription will eventually be substituted by the pharmacist. Results: Generic substitution occurred at 25% of the branded prescriptions. Generic substitution was more likely to occur earlier in time after patent expiry and to patients that were older and more experienced in their drug use. Individually owned pharmacies had a lower probability of generic substitution compared to chain pharmacies. Oppositely, branded substitution occurred in 10% of generic prescriptions and was positively related to the patients' experience in branded use. Individually owned pharmacies were more likely to substitute a generic drug to a branded compared to other pharmacies. Antidepressant and PPI prescriptions were less prone to generic and more prone to branded substitution. Conclusion: Analysis of prescription substitution by the pharmacist revealed strong relations between substitution and patient experience on drug use, pharmacy status and timing. These findings can be utilised to design further strategies to enhance generic substitution. [ABSTRACT FROM AUTHOR]

A major problem in the analysis of attrition of cohorts in studies on mental health problems is that data on those who do not participate at the outset of a study are largely unavailable. It is not known how underlying psychopathology affects the first stages of screening where non-response and selectivity are usually highest. This article presents results of one of the centres of the Netherlands Study of Depression and Anxiety (NESDA), a longitudinal study aimed at describing the long-term course and consequences of depression and anxiety disorders. The aim is to describe the different ways of attrition during the first NESDA-wave in a cohort of patients aged 18–65 years of the Registration Network Groningen and to analyse whether attrition is related to gender, age and psychopathology as recorded in general practice. The attrition of the study cohort (n = 8475) was highest during the first stages, eventually leading to a population of 169 patients only who participated in the full NESDA-programme. Probabilities of transition from one stage of the screening process to the next were regressed on selected background variables using binary logistic regression. Correlates of participation were being female and being older (>40). Psychopathology was an important variable in the formation of the initial sample cohort, but only had a weak influence on patient response to the screening questionnaire. Study design factors had a stronger impact on the changing composition of the cohort at each screening stage compared to patient factors. Copyright © 2009 John Wiley & Sons, Ltd. [ABSTRACT FROM AUTHOR]

Objective: To describe the medical consumption [general practitioner (GP) consultation, referrals, medication consumption] of patients with shoulder complaints in general practice., Methods: Data were obtained from a primary-care medical registration network. All patients aged ≥18 years with new shoulder complaints who consulted their general practitioner in 1998 were included, and were followed 10 years beyond the initial consultation., Results: A total of 526 incident cases were identified (average age 47 years, 65% women and average follow-up 7.6 years). Nearly half of the patients consulted their GP only once. For 79% of those patients, a wait-and-see policy or a prescription for NSAIDs sufficed. During follow-up, 65% of all patients were prescribed medication. Medication consumption was significantly higher among men than women, and higher for the 45- to 64-year age group compared with the younger group. A total of 199 patients were referred, of which 84% was to a physiotherapist and 16% to secondary care. Only two patients had surgery, performed by an orthopaedic surgeon. The GP recorded a diagnosis in only 14% of patients; rotator cuff disorder being the most common., Conclusions: Nearly half of patients with a new shoulder complaint consult their GP only once. Medical consumption in general practice is highest for male shoulder patients and the 45- to 64-year age group. Shoulder problems are mainly an issue for primary care.

Objective: To evaluate prescriptions of asthma medication for children in primary care., Methods: Data on prescriptions of asthma medication for children aged 0-9 years were collected from a general practice-based network in the north eastern part of the Netherlands. Prevalence, incidence, indications, continuation beyond the age of 6 years, and predictors of continuation, were determined., Results: Prevalence of prescriptions was about 80 per 1000 person years. An asthma diagnosis was registered in 40% of the children with a first prescription and in 70% of the children with six or more prescriptions. Discontinuation of asthma medication was between 60 and 90%. Continuation was more likely in children with a first prescription at age 2 or 3 as compared to children starting treatment at age < or =1 year. Children with prescriptions for beta2-agonists and inhaled corticosteroids were more likely to continue treatment than children with beta2-agonist monotherapy prescriptions., Conclusion: Continuation of asthma medication in children is low. Age at first prescription and the type of asthma medication are predictors of continuation of asthma medication from preschool into school-age.