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PubMed2001

Antipsychotic prescription use and costs for persons with schizophrenia in the 1990s: current trends and five year time series forecasts.

Real advances in schizophrenia pharmacotherapy have been made over this decade with the development of more efficacious treatment options with fewer side-effects. These advances have high per-unit direct costs that may have a profound effect on drug budgets of systems caring for persons with schizophrenia. The objective of this study was to describe the changes in utilization and cost for antipsychotic prescriptions by atypical, clozapine, decanoate products, and traditional neuroleptics in a large naturalistic setting, i.e. the Georgia Medicaid population. Secondly, this study forecasted the categorized antipsychotic prescription utilization through the year 2002. Administrative claims data spanning 1990-1997 for Medicaid eligible persons suffering from schizophrenia in the state of Georgia were supplemented with psychiatric institutional data obtained from the Georgia Department of Human Resources. A total of 16227 Medicaid-eligible recipients had a code indicative of schizophrenia (ICD-9-CM=295.(**)) and were at least 16 years of age at the time of their first diagnosis. The mean recipient prescription use and expenditures were tallied for each month of the study and stratified by prescription category (atypical, clozapine, decanoate, and traditional antipsychotic). ARIMA time series models were identified and estimated using these monthly PMPM utilization and expenditures estimates to forecast 5 years beyond the last month of the study. The total use of antipsychotics increased modestly throughout the study period, and the use of atypicals, clozapine, and decanoate products increased substantially, while a decrease was observed for traditional antipsychotics. In 1995 dollars, antipsychotic expenditures increased from a mean of approximately $10 PMPM in 1990 to $95 projected for the year 2002. This transition from traditional oral antipsychotics to atypicals and decanoate products has a profound effect on drug expenditures for systems paying for the care of persons with schizophrenia. Further studies to determine the value of the transitions of therapy described in this study need to be evaluated using a system-wide- or Medicaid perspective.

Adult↗
PubMed2000

[The incidence of prescriptions without marketing product license in a neonatal intensive care unit].

UNLABELLED: Most of the drugs prescribed in pediatric units have no product licence. The lack of clinical studies in children and appropriate drug formulations decrease their safety. The lack of a legal framework makes the prescriber insecure. Even if the debate is not recent, few studies have been carried out in this field. The aim of the present study was to evaluate the rate of prescriptions of unlicensed and off-label drugs in a neonatal intensive care unit. PATIENTS AND METHODS: The present study was carried out in our neonatal intensive care unit, from January 12 to February 12, 1998. Forty babies aged 0 to 128 days were included (90% newborns), with a gestational age between 25 to 40 weeks (88% were premature, with a birth weight lower than 1000 g). RESULTS: Two hundred and fifty-seven prescriptions were administered with 55 different types of drugs during this period. Ten percent of the prescribed drugs had no product licence. Sixty-two percent were off-label for premature infants and 64% for newborns: 90% due to age, 9.3% due to dose and 0.7% to method of administration. No therapeutic alternatives to these prescriptions were found among the few available licensed drugs. CONCLUSION: The prescriptions of unlicensed and off-label drugs in neonatal intensive care units are daily and repeated events. The prescribers are usually not aware of the exact status of the drug and do not realize neither he importance of the problem nor the legal and potential consequences. The lack of pediatric clinical studies is to a large extent responsible for the absence of drug registration in pediatrics. The pharmaceutical industry has few incentives to develop the pediatric product licences.

Age Factors↗
PubMed2005

Asthma rescue and allergy medication use among asthmatic children with prior allergy prescriptions who initiated asthma controller therapy.

BACKGROUND: Asthma and allergic rhinitis are frequently comorbid conditions. Montelukast is effective in treating both diseases and may reduce total medication use among children with asthma and allergic rhinitis. OBJECTIVE: To determine the differences in respiratory and allergy medication use and costs, as proxies for control, in pediatric patients with asthma and allergy who initiated asthma controller therapy. METHODS: A 24-month, retrospective, pre-post cohort study using a pharmacy claims database of children (age < 16 years) with 2 or more consecutive asthma controller prescriptions and 1 or more allergy prescription (within 12 months before initial controller prescription). Children taking inhaled corticosteroids (ICSs) and montelukast were matched one to one based on age, days of prior allergic rhinitis therapy supply, duration of controller therapy, and propensity score. Differences in costs of rescue or acute asthma medications, prescription allergy medications, other respiratory medications, and the number of days of rescue or acute asthma medication use and allergy medication use were calculated. RESULTS: A total of 1,236 children were matched into ICS and montelukast groups (n = 618 each). Montelukast patients had a smaller cost increase overall compared with ICS patients (combined cost for rescue or acute asthma medications, allergy medications, and other respiratory medications: $5.55 vs $12.08, P < .001). Cost increase for rescue or acute asthma medications was significantly lower in the montelukast group ($0.94 vs $3.82, P = .003). The cost increase for allergy medications ($5.29 vs $10.06, P < .001) was also significantly lower in the montelukast group. Patients taking montelukast also had fewer days of therapy with asthma rescue medication and allergy medication compared with patients taking ICSs. CONCLUSIONS: Initiating therapy with montelukast was associated with better asthma and allergy control demonstrated via lower increase in use and costs of asthma rescue and allergy medications compared with initiating ICS therapy.

Acetates↗
PubMed2005

[Effectiveness of an intervention to improve medical prescription quality in specialized care].

OBJECTIVE: The study was designed to research whether providing doctors with customized reports on prescription indicators,plus a presentation of the project to clinical departments and hospital boards, would improve prescription quality in specialized care. MATERIAL AND METHODS: Quasi experimental intervention study. During three periods of time we observed whether any differences between physicians receiving said reports (intervention group) and physicians not receiving said reports (control group)occurred in three overall quality markers (94 physicians)--generic drugs, low therapeutic value drugs, and irrelevant novel drugs-and two specific indicators--angiotensin converting enzyme inhibitors (109 physicians) and omeprazole (169 physicians). Indicators were assessed using mean values (95% Cl) and differences between groups with the z test. RESULTS: Prior to the intervention, indicators had no significant differences. At 4-6 months after delivering the report, generic drug prescription improved in the intervention group - 3.13%(1.79-4.47) versus 1.81% (1.08-2.54) in the control group,p = 0.041. After 10-12 months the intervention group had significantly improved versus the control group regarding: generic drugs, 4.01% (2.28-5.73) versus 2.22% (1.56-2.87), p = 0.025;ACE inhibitors, 58.89% (47.56-70.21) versus 45.91% (36.03-55.79), p = 0.042; and low therapeutic utility drugs, 8.57%(5.56-11.6) versus 12.35% (8.96-15.74), p = 0.047. Improvement regarding omeprazole did not reach statistical significance,and novel medications remained virtually unchanged. CONCLUSION: The intervention proved effective for the improvement of qualitative prescription indicators in specialized care.

Angiotensin-Converting Enzyme Inhibitors↗
PubMed2001

[Automatic definition of prescription isodose for stereotaxic radiation of arteriovenous malformations].

PURPOSE: To evaluate dosimetric consequences generated by the automatic definition based on lesion coverage of prescription isodose. A clinical series of 124 arteriovenous malformations was analysed. Plan quality was quantified by the standard deviation of the differential dose volume histogram calculated in the lesion. MATERIAL AND METHODS: We define two quantitative protocols based on lesion coverage for the automatic definition of prescription isodose using a volumetric definition of coverage (90% of lesion volume), and an isodose-based definition proposed by RTOG (prescription isodose equals minimum isodose in the lesion divided by 0.9). RESULTS: We have evaluated the plans obtained for these two protocols, calculating several dose-volume indices. These indices are presented as a function of dose-volume histogram standard deviation in order to quantify the consequences of their variations for this representative series of plans. The margin our team tolerates is such that the sum of underdosed lesion and overdosed healthy tissues factors remains lower than one. Protocol based on volumetric coverage gives results situated within this margin. Protocol based on RTOG definition produces conformation indices that could be greater than 1. CONCLUSION: The absolute dose would be decided taking into account examined dose-volume indices and clinical data. A protocol for automatic definition of prescription isodose using volumetric lesion coverage seems to be more judiciously adapted to arteriovenous malformation conformal plans in stereotactic conditions because of variations observed in the overdosage of healthy tissues.

Algorithms↗
PubMed2005

[Factors affecting drug prescription in patients with stable COPD: results from a multicenter Spanish study (IDENTEPOC)].

OBJECTIVE: To determine what factors are associated with prescription of drugs to patients with stable chronic obstructive pulmonary disease (COPD). MATERIAL AND METHODS: We studied 568 patients with stable COPD. Assessments included determination of the severity of dyspnea, body mass index, health-related quality of life, and spirometry testing. RESULTS: The forced expiratory volume in 1 second was significantly associated with prescription of long-acting beta2-adrenergic agonists (odds ratio [OR]=0.98; 95% confidence interval [CI], 0.96-1) and inhaled corticosteroids (OR=0.98; 95% CI, 0.96-1). Quality of life was related to administration of short-acting beta2-adrenergic agonists (OR=1.02; 95% CI, 1-1.03), long-acting beta2-adrenergic agonists (OR=1.02; 95% CI, 1-1.03), ipratropium bromide (OR=1.03; 95% CI, 1-1.04), theophylline drugs (OR=1.02; 95% CI, 1-1.03), and inhaled corticosteroids (OR=1.02; 95% CI, 1-1.03). The severity of dyspnea was significantly associated with prescription of oral corticosteroids (for grade IV dyspnea, OR=15.25; 95% CI, 2.40-97.02). Body mass index was not related to drug administration. CONCLUSIONS: Drug prescription in patients with stable COPD correlates not only with forced expiratory volume in 1 second but also with other parameters such as health-related quality of life and dyspnea.

Aged↗
PubMed2001

Antidepressant prescription for depression in general practice in The Netherlands.

OBJECTIVE: To evaluate diagnoses and the prescription of antidepressants drugs for depression, based on data from 1993 to 1998 related to consultations for depression in general practice in the Netherlands. METHOD: An exploratory analysis of data provided by IMS Health. Consecutive annual representative samples of 640 GPs regularly registered data on morbidity and (drug) treatment for specific medical problems in special booklets for a period of one week. The data refer to consultations for depression. The diagnoses were initially based on ICD-9 criteria and later ICD-10 criteria for depression. MAIN OUTCOME MEASURES: Number of diagnoses of depression and number of prescriptions for antidepressants. RESULTS: The number of first consultations for depression rose gradually, from 909 in 1993 (95% CI: 774 to 1043), to 1,482 (CI: 1292 to 1672) in 1998: an increase of 63%. For an individual GP, this represents an increase from 18 to 30 in first consultations for depression. The number of prescriptions for antidepressants also increased, mainly during repeat consultations: a 278% increase, from 3,708 in 1993 to 14,024 in 1998 (CIs: 3,504 to 3,912 and 13,252 to 14,796). Antidepressants were prescribed during the first consultation 564 times in 1993 compared with 1,080 times in 1998. The first contact with a GP for depression led to an antidepressant prescription in 62% of cases in 1993 and 73% in 1998. Although the guidelines issued by the Dutch College of General Practitioners in 1994 recommended tricyclic antidepressants (TCAs) for the treatment of depression, paroxetin, fluoxetin, and mirtazapin (SSRIs) accounted for 56% of the prescribed antidepressants. CONCLUSION: Between 1993 and 1998, GPs in the Netherlands prescribed increasingly more antidepressants, and they prescribed more SSRIs than TCAs. Furthermore, GPs diagnose depression more frequently and the number of repeat consultations has increased.

Antidepressive Agents↗
PubMed2000

What kind of patients and physicians value direct-to-consumer advertising of prescription drugs.

Direct-to-consumer (DTC) advertising of prescription drugs can enhance the physician-patient relationship, as well as benefiting its sponsor. However, overall benefits can only occur if the patients value the information enough to discuss it with their physicians and the physicians are not predisposed against the DTC information. We investigate the impact of demographics and exposure to marketing on consumers' and physicians' receptiveness to DTC advertising of prescription drugs, using data from two nationwide surveys. We find that consumers who have an ongoing need for health care, that is, those with children or with a chronic condition requiring medication, value prescription drug advertising more highly, while older consumers, consumers who have been sick recently, or more educated consumers are more likely to trust their physicians instead. We find that more experienced physicians, physicians who see more patients, or those who have more exposure to pharmaceutical advertisements are more accepting of DTC advertising of prescription drugs.

Advertising↗
PubMed2003

Socio-economic differences in prescription and OTC drug use in Dutch adolescents.

OBJECTIVE: To detect whether there were socio-economic differences in the overall use of prescription and OCT drugs among adolescents. METHODS: This study was a secondary analysis of questionnaire data collected to investigate socio-economic differences in health risk behaviour and decision-making. RESULTS: About 20% of the 741 girls and 10% of the 736 boys reported using at least one prescription drug in the past 14 days, oral contraceptives excluded. For OTC drugs these percentages were 45% and 24%, respectively. No statistically significant socio-economic differences in prescription drug use could be detected. A higher socio-economic status was associated with an increased OTC drug use, especially in boys. The odds of girls who reported medication was about twice that for boys, after adjusting for perceived health and socio-economic status. CONCLUSION: There were socio-economic differences with regard to OTC drug use. No socio-economic differences in prescription medication use could be found. There were gender differences with respect to medication use in adolescence, regardless of perceived health and socio-economic status.

Adolescent↗
PubMed2001

Antiepileptic drug utilization: a Danish prescription database analysis.

OBJECTIVES: The purpose of the study was to use prescription data from a Danish database to analyse and evaluate antiepileptic drug (AED) utilization, and compare with other prevalence studies. METHODS: A Danish research database covering outpatient prescription data from a population of 471,873 persons was used. Prescription records on all patients prescribed AEDs during 1998 were retrieved. A cohort was extracted from the group of AED users. RESULTS: We identified 5426 AED users. A total of 3756 of the 5426 AED users were included in our cohort. Of the subjects in the cohort 74% were on monotherapy, 19% used two AEDs and only 7% used three or more AEDs. The eight most frequent regimens were all monotherapy: carbamazepine, oxcarbazepine, phenobarbital, valproic acid, lamotrigine, clonazepam, phenytoin and primidon in that order. The estimated crude 1-year prevalence of AED use was 0.77% for women and 0.83% for men (P<0.001), and it increased with age for both genders. CONCLUSIONS: The prescription pattern reported here is in accordance with the general guidelines for the treatment of epilepsy in Denmark, except for a surprisingly extensive use of phenobarbital. With specific reservations the figures appear to be reasonable estimates of the prevalence of epilepsy.

Adolescent↗
PubMed2000

Pharmacovigilance based on prescription databases.

Prescription databases are indispensible in drug safety research and surveillance. For suspected rare serious adverse drug reactions, the confirmation and quantitative risk assessment requires proper epidemiological studies. Often prescription databases provide the information on drug exposure for such studies. Aberrant drug utilization in terms of overuse, underuse, polypharmacy etc. may be a threat to the health of the patient, and these aspects can best be studied by prescription databases. In cases of international drug safety alerts, prescription databases may provide information required for rational actions to be taken.

Aged↗
PubMed1996

The case against prescription privileges for psychologists.

The right to prescribe psychoactive medications could have major effects on the practice of psychology, on its education and training, on the marketing of psychological services, and on the public's perception of the field. This article presents the case against psychologists pursuing prescription privileges, including discussion of several arguments advanced by proponents of prescription privileges. Although APA has endorsed the effort to secure prescriptive authority, there is no requirement that states actually change their licensing laws so that their psychologists can prescribe. The costs (and potential risks) involved in pursuing prescription privileges are discussed.

Curriculum↗
PubMed2006

Database of traditional Chinese medicine and its application to studies of mechanism and to prescription validation.

BACKGROUND AND PURPOSE: Traditional Chinese Medicine (TCM) is widely practised and is viewed as an attractive alternative to conventional medicine. Quantitative information about TCM prescriptions, constituent herbs and herbal ingredients is necessary for studying and exploring TCM. EXPERIMENTAL APPROACH: We manually collected information on TCM in books and other printed sources in Medline. The Traditional Chinese Medicine Information Database TCM-ID, at http://tcm.cz3.nus.edu.sg/group/tcm-id/tcmid.asp, was introduced for providing comprehensive information about all aspects of TCM including prescriptions, constituent herbs, herbal ingredients, molecular structure and functional properties of active ingredients, therapeutic and side effects, clinical indication and application and related matters. RESULTS: TCM-ID currently contains information for 1,588 prescriptions, 1,313 herbs, 5,669 herbal ingredients, and the 3D structure of 3,725 herbal ingredients. The value of the data in TCM-ID was illustrated by using some of the data for an in-silico study of molecular mechanism of the therapeutic effects of herbal ingredients and for developing a computer program to validate TCM multi-herb preparations. CONCLUSIONS AND IMPLICATIONS: The development of systems biology has led to a new design principle for therapeutic intervention strategy, the concept of 'magic shrapnel' (rather than the 'magic bullet'), involving many drugs against multiple targets, administered in a single treatment. TCM offers an extensive source of examples of this concept in which several active ingredients in one prescription are aimed at numerous targets and work together to provide therapeutic benefit. The database and its mining applications described here represent early efforts toward exploring TCM for new theories in drug discovery.

Artificial Intelligence↗
PubMed2004

Patterns of risperidone prescription: a utilization study in south-west France.

OBJECTIVE: To describe the patterns of prescriptions associated with risperidone in naturalistic clinical practice. METHOD: We analysed 500 prescription forms randomly selected from the social security insurance database in Aquitaine (south-west France). RESULTS: The prevalence of co-prescription was 42.5% for antidepressants, 46.4% for benzodiazepines, 26.6% for other neuroleptics, 21.8% for mood stabilizers and 19% for anticholinergic drugs. The high prevalence of co-prescribed antidepressants (59.3% Selective Serotonin Reuptake Inhibitors) may be explained by the frequent comorbidity of mood disorders in schizophrenia, and by the fact that risperidone was prescribed in naturalistic conditions in disorders other than schizophrenia. CONCLUSION: The high level of concomitant drug prescription in patients treated with risperidone illustrates the gap between clinical trials and utilization in naturalistic settings. The association antidepressant-risperidone has been insufficiently studied for efficacy or safety, and has to be explored further from both a pharmacological and clinical point of view.

Adolescent↗
PubMed1998

Prescription patterns of diuretics in Dutch community-dwelling elderly patients.

AIMS: To describe age- and gender-related prescription patterns of diuretics in community-dwelling elderly, and to compare diuretics to other cardiovascular (CV) medications. METHODS: Cross-sectional study of patient-specific prescription data derived from a panel of 10 Dutch community pharmacies. Determination of proportional prescription rates and prescribed daily dose (PDD) of diuretics, cardiac glycosides, nitrates, angiotensin converting enzyme (ACE) inhibitors, beta-adrenoceptor blockers, and calcium channel blockers in all 5326 patients aged 65 years or older dispensed CV medications between August 1st, 1995 and February 1st, 1996. RESULTS: Diuretics were prescribed to 2677 of 5326 patients (50.3%), 1325 patients (24.9%) using thiazides and 1198 patients (22.5%) using loop diuretics. Prescription rates of loop diuretics increased from 15.1% in patients aged 65-74 years to 37.2% in patients aged 85 years or older. Rates also increased for digoxin and nitrates. Rates for thiazide diuretics remained unchanged with age; rates for beta-adrenoceptor blockers, ACE inhibitors and calcium channel blockers declined with age. Thiazides were prescribed to 30.1% of women compared with 16% of men (P < 0.001). Average PDD was 135 +/- 117% of defined daily dose (DDD) for loop diuretics, and highest for bumetanide (245 +/- 2.01% of DDD, equivalent to 2.5 +/- 2.0 mg). Average PDD was 74 +/- 40% of DDD for thiazides, and highest for chlorthalidone (100 +/- 49% of DDD, equivalent to 25 +/- 12 mg). CONCLUSIONS: Important characteristics of diuretic usage patterns in this elderly population were a steep increase in loop diuretic use in the oldest old, a large gender difference for thiazide use, and high prescribed doses for thiazides.

Age Factors↗
PubMed2003

Prescription drug samples--does this marketing strategy counteract policies for quality use of medicines?

Prescription drug samples, as used by the pharmaceutical industry to market their products, are of current interest because of their influence on prescribing, and their potential impact on consumer safety. Very little research has been conducted into the use and misuse of prescription drug samples, and the influence of samples on health policies designed to improve the rational use of medicines. This is a topical issue in the prescription drug debate, with increasing costs and increasing concerns about optimizing use of medicines. This manuscript critically evaluates the research that has been conducted to date about prescription drug samples, discusses the issues raised in the context of traditional marketing theory, and suggests possible alternatives for the future.

Advertising↗
PubMed2003

Physician gender and antihypertensive prescription pattern in primary care.

OBJECTIVES: To determine: (i) the gender-based differences of physicians in prescribing antihypertensive drugs in the management of hypertension; (ii) the influence of patient comorbidity such as diabetes mellitus on the gender-based pattern of antihypertensive prescription, and (iii) gender-based prescription patterns among family physicians (FPs) and general practitioners (GPs). METHODS: A survey study was carried out at 15 out of 20 health centres in Bahrain during May and June 2000. A total of 3971 prescriptions, issued to 2705 patients with uncomplicated hypertension and 1266 patients with diabetic hypertension by 77 FPs (female = 54, male = 23) and 41 GPs (female = 11, male = 30), were analysed. RESULTS: As monotherapy, female physicians preferred ACE inhibitors (OR: 0.82, CI: 0.68-0.98, P = 0.033). In terms of overall drug utilization (monotherapy + combination therapy): (i) male physicians preferred beta blockers (OR: 1.17, CI: 1.03-1.31, P = 0.014) and diuretics (OR: 1.15, CI: 1.00-1.32, P = 0.047), while female physicians preferred methyldopa (OR: 0.73, CI: 0.56-0.94, P = 0.019); (ii) in uncomplicated hypertension, female physicians preferred calcium channel blockers (OR: 0.83, CI: 0.69-0.99, P = 0.038) and methyldopa (OR: 0.69, CI: 0.49-0.98, P = 0.042), and (iii) in diabetic hypertension, male physicians preferred beta blockers (OR: 1.26, CI: 1.00-1.57, P = 0.047). While female FPs prescribed methyldopa more extensively (OR: 0.66, CI: 0.47-0.92, P = 0.018), male GPs prescribed beta blockers (OR: 1.28, CI: 1.00-1.62, P = 0.046). CONCLUSIONS: Within the same practice setting, gender-based differences in the prescription of antihypertensive drugs were seen. Such preference for a particular class of antihypertensives was also influenced by the presence of comorbidity in patients and, to a limited extent, by the training level of primary care physicians.

Antihypertensive Agents↗
PubMed2002

Hypnotic prescriptions in a university hospital: Analysis of data from the computer-ordering system.

The computer-ordering system (COS) database was used to investigate hypnotic prescriptions issued to outpatients at various medical departments at the Dokkyo University School of Medicine. Hypnotics were prescribed for 3428 patients (1613 men, 1815 women), with a mean age of 56 years (range 8-91 years). The number of prescriptions was 3.5% of the total number of prescriptions (123 518). Although hypnotics were prescribed most often to patients in their 60s, generally, the incidence was higher for younger-aged patients. Physicians in all specialty areas tended to prescribe short-acting benzodiazepine hypnotics. The issuance of hypnotic prescriptions should be investigated to determine the prevalence of insomnia in various medical specialties.

Adolescent↗