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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 54 (1998), S. 113-118 
    ISSN: 1432-1041
    Keywords: Key words Drug utilisation ; Prescribing habits
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objectives: To describe a simple method for assessing the quality of drug prescribing. Methods: We tested the idea that the number of drugs accounting for 90% of drug use – drug utilization 90% (DU90%) – may serve as an indicator of the quality of drug prescribing. We ranked the drugs by volume of defined daily doses (DDD) and determined how many drugs accounted for the DU90% segment. We also compared this segment with the pharmacotherapeutic guidelines issued by the Regional (local) Drug Committee to determine the adherence to its recommendations (index of adherence). The cost per DDD within the DU90% segment and for the remaining 10% was also calculated. The utilization of drugs based on prescriptions purchased during April 1995 was determined for 24 primary health care (PHC) centres in southwestern Stockholm. Results: The number of different products, defined as all products marketed under a single brand name within an ATC (anatomic therapeutic chemical) category, in the DU90% segment varied twofold (81–164) between the 24 PHC centres. Differences in the number of GPs per PHC centre accounted for a third of this variation. The compliance with the Drug Committee recommendations varied between 54% and 78%. There was no relationship between the number of products accounting for the DU90% segment and the adherence to local prescription guidelines, i.e. prescribing more products did not increase the adherence. The costs for the DU90% drugs varied from 2.26 SEK/DDD in one PHC centre to 3.75 in another one, with an average cost of 2.87 SEK/DDD, while for the remaining 10% it was the double (6:54 SEK/DDD). In all, the DU90% drugs made up 80.8% of the total cost as compared with 19.2% for the remaining 10%. In the DU90% segment, there was no clear relationship between adherence to the guidelines and the cost/DDD, i.e. following the evidence-based guidelines appeared to provide a higher quality of prescribing rather than cheaper prescribing. Conclusions: The DU90% is an inexpensive, flexible, and simple method for assessing the quality of drug prescribing in routine health care. The number of products in the DU90% segment and adherence to prescription guidelines may serve as general quality indicators. The method may be adapted to provide comparative data between PHC centres, hospitals, regions etc. that may be cross-sectional and longitudinal. Other quality criteria, specific for each class of drugs, should complement these general indicators.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 8 (1975), S. 83-89 
    ISSN: 1432-1041
    Keywords: Diabetes ; insulin ; sulphonylureas ; biguanides ; drug utilization ; geographical differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The consumption of insulin and oral antidiabetic drugs was measured at the gross sales level in Sweden and Norway and at the prescription level in Northern Ireland. “Agreed daily doses” were used as units of comparison, which defined as follows: insulin 40 I.U., tolbutamide 1 g, acetohexamide 500 mg etc. Consumption was expressed as the number of “agreed daily doses” per 1,000 inhabitants per day. This provided a rough estimate of the number of subjects for whom the drug had been prescribed per 1,000 population. The data were collected during the three months April – June 1971. Marked differences in the consumption of antidiabetic drugs were found between the three countries and also between areas within each country. The consumption of insulin was similar in Norway and Northern Ireland (3.5 and 3.9 agreed daily doses per 1,000 inhabitants per day), but almost twice as high in Sweden. In Norway much lower use was found in certain rural areas. The variation in the consumption of oral antidiabetic drugs was even more marked. Surprisingly, consumption was considerably higher in Sweden (15.8) than in the nearby Norway (7.3), and was even lower in Northern Ireland (4.3). The major use was of sulphonylureas, especially chlorpropamide. Within the countries there was marked regional variation in the choice of individual biguanides and sulphonylureas. The data are discussed in relation to such factors as the incidence of diabetes, the sole use of dietary treatment etc. It is concluded that studies in depth, which link the actual use of drugs by patients to diagnosis, diabetic symptoms and clinical outcome of treatment are necessary in order to explore the reasons behind the marked geographical differences and to define a rational drug policy. However, the methods described in the study may be used for early detection of gross national differences in drug utilization, the further investigation of which may reveal to be of great public health interest.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-1041
    Keywords: Key words Antidepressants ; Prescription database; utili zation ; tolerability
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Abstract Objective: To study whether the newer antidepressants have changed the patterns of antidepressant use, and whether the claimed better adverse effect profile of the newer antidepressants is reflected in their use as monitored by a prescription database. Method: By means of a prescription database (OPED), the use of antidepressants from 1991 to 1993 in Odense, Denmark, was analysed. Results: The 1-year prevalence of antidepressant use increased significantly from 1.60% to 2.00%, which still is below the claimed 1-year prevalence of depression of at least 5%. The increase was mainly due to a rapidly increasing use of the newer antidepressants, accompanied by a moderate decline in the use of older antidepressants (mainly tricyclic antidepressants). The patterns of antidepressant use were very polymorphic, with about 5% being on continuous use for all 3 years and groups of each 20–30% being treated with: (1) several series or (2) one series or (3) only by one prescription. The share of patients presenting only one prescription (20%) was the same for older and newer antidepressants. Likewise, the rate of shifts from older to newer antidepressants or vice versa was the same (7% vs 6%). The duration of treatment did not differ much between older and newer antidepressants. Relative to the defined daily dose (DDD), the older antidepressants were given in much lower doses (median 0.63 DDD) than the newer antidepressants (median 1.05 DDD). Conclusion: It is concluded that many depressed patients are still not receiving antidepressant treatment and that the claimed better adverse effect profile of the newer antidepressants was not clearly reflected in their use.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 20 (1981), S. 185-191 
    ISSN: 1432-1041
    Keywords: compliance ; prescribing habits ; drug utilisation ; age effect ; multiple therapies
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The drug history of 285 consecutive patients admitted to two medical wards of a Swedish university hospital was investigated. In 30 cases (11%) no information about current drug therapy could be obtained from the patients themselves, and in further 21 (7%) additional drugs from other sources were discovered. Current drug therapy of 234 patients (82%) was identified, of whom 217 had medicines supplied by prescription and 52 used drugs bought over the counter. The medication was “chronic” for 85% of the prescribed drugs, and 18% were prescribed to be taken as required. Significantly more women than men were taking medicines, but, amongst the users, there was no significant difference in the number of drugs taken by men or women. The average number of drugs prescribed for the 217 patients was 3.7, more being prescribed for the older patients. Cardiovascular and psychotropic medicines were the agents most commonly prescribed. Digoxin was prescribed for 65 patients. The mean daily dose was 0.20 mg, and it was reduced for older patients and for those with elevated serum creatinine. Twelve patients (19%) had no measurable digoxin in their plasma; the median concentration was 1.15 nmol/l. Ten of 32 patients (31%) had a significant change in their plasma digoxin concentration after supervised drug intake in hospital, indicating previous irregular intake of digoxin. Compliance with the prescribed drug regimen was evaluated from interviews of 151 patients. Of them, 59 (39%) were classified as having been non-compliant for half their drugs during the last two days prior to admission. Non-compliance was reported significantly more often by patients who were aged 65 years or more, and who had more than three drugs prescribed for regular intake. The number of drugs prescribed did not seem to influence compliance in patients under 65 years of age. Significantly more doses were reported to be missed for drugs meant to be taken thrice daily (31%), than for those with once (18%) or twice (20%) daily dosage schedule. The difference between once and twice daily schedules was not significant.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 20 (1981), S. 193-200 
    ISSN: 1432-1041
    Keywords: drug problems ; patient compliance ; adverse drug reactions ; interview ; pharmacokinetics ; inadequate therapy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The association between hospital admission and drug-related problems was evaluated in 285 consecutive admissions to two medical wards in a Swedish university hospital. Standardised definitions and criteria for causality were used. A drug-related problem was judged to have been the main reason for admission of 36 patients, and a strongly contributory reason for 9. These 45 patients comprised 16% of all patients, and 19% of those receiving medication prior to admission. For 19 patients the problem was considered to be failure to achieve the desired therapeutic effect. 11 of these 19 took less medication than prescribed, and an inadequate dose had been presented for the other 8 patients. In 26 patients there was an excessive or otherwise adverse effect. In 10 it was an intentional or accidental poisoning, and 16 had an adverse drug reaction. Non-compliance with the prescribed regimen caused almost half of the drug-related admissions: 11 took too little and 10 took too much of the prescribed drugs. The majority of the other problems could probably have been prevented by better application of pharmacokinetic principles to the prescribing.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 14 (1978), S. 213-220 
    ISSN: 1432-1041
    Keywords: Diabetes ; antidiabetic drugs ; drug utilization ; prescribing habits ; geographical differences ; methodology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary In a comparison of three European countries Sweden utilized more antidiabetic drugs than Northern Ireland and Norway. Swedish wholesale figures for a quarter of a year used for the comparison were based on “daily doses”/1000 inhabitants/day. In order to validate the Swedish figures, a defined geographical area was investigated in 1972–1973, the island of Gotland with 54000 inhabitants. Antidiabetic drugs distributed on a wholesale basis were compared with those distributed on a prescription basis. Additional information was gathered (interviews, questionnaires, hospital records etc.) from a sample of patients (n=54) and their prescribing doctors (n=37). There was good agreement between the wholesale and prescription figures for oral antidiabetic drugs over a three month period (30.0 vs 29.8 “daily doses”/1000 inhabitants/day), but this did not apply to insulin (5.9 vs 7.2) unless a longer time period was studied. The average daily doses prescribed were higher than the theoretically derived “daily doses”. Combination antidiabetic drug therapy was preseribed for 28% of the patients. Thirteen different oral antidiabetics were issued during the study period, four of which constituted 90% of the total. Phenformin, the second most commonly prescribed oral antidiabetic drug was prescribed by 33 doctors, and metformin was prescribed by only 14 doctors. Few patients were treated with diet alone and few doctors could obtain assistance from a dietician. There was little or no evidence that patients failed to comply with the prescriptions, but by contrast they adhered poorly to written dietary instructions.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 15 (1979), S. 249-256 
    ISSN: 1432-1041
    Keywords: prescribing habits ; psychotropics ; drug utilization ; methodology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary The prescription of psychotropic drugs at a multidoctor district health centre in northern Sweden in 1973, was analysed by means of problemoriented medical records. Of the 22,000 inhabitants of the district 10,700 consulted the health centre. Psychotropic drugs were prescribed for 11.3% of the patients, corresponding to 5% of the inhabitants of the area. Sixty per cent of the patients received one psychotropic prescription and 90% not more than three. Two-thirds of prescriptions were for women. Hypnotics, sedatives and minor tranquillisers constituted 64% of all prescriptions, major tranquillisers 24% and antidepressants 12%. One fifth of the patients obtained drugs belonging to more than one of the major psychotropic groups during the year. Insomnia, psychoneurosis and depression made up two-thirds of the indications for psychotropic drug therapy. More than thirty different psychotropic drugs were prescribed for the two major indications. There was considerable variation in how the different doctors prescribed drugs for the same indication. Fifty-nine different drug products were prescribed, of which the commonest five constituted more than half of the total number. Individual doctors used from 22 to 38 different psychotropic drugs.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    European journal of clinical pharmacology 18 (1980), S. 165-169 
    ISSN: 1432-1041
    Keywords: chlorpropamide ; diabetes ; drug utilisation ; patient compliance ; diet ; plasma concentration ; maturity onset diabetes
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary Serum chlorpropamide concentrations (s-CPA) were determined and related to clinical findings in 83 outpatients with maturity onset diabetes. The daily doses of CPA (mg/kg) varied six-fold, but s-CPA ranged 18-fold between the patients. There was a significant correlation between dose and s-CPA (r=0.61), which rose to 0.75 in the 30 patients who had prescribed no other drugs. Patients given other drugs concomitantly were over-represented amongst subjects with extreme values of apparent plasma clearance of CPA. There was no correlation either between serum creatinine or age and s-CPA. Of the 83 patients 40 (48%) had acceptable blood and urinary glucose values according to our criteria; but as 17 were overweight, only 23 patients (28%) had acceptable clinical control. Of the remaining 60 patients, too low a dose was being given to only 12, and dietary failure was the most probable explanation in the others. Thirteen patients (16%) probably did not need CPA. It is likely that this is a partial explanation for the high utilisation of oral antidiabetic drugs in Sweden. There was no general correlation between dose or s-CPA and blood glucose values, but analysis of s-CPA may still be of value in explaining unexpected changes in clinical control.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1432-1041
    Keywords: hypertension ; hypertensive therapy ; drug utilization ; therapeutic traditions ; international differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A questionnaire survey based on hypertension case histories was performed among a representative sample of 400 GP's and hospital doctors in Northern Ireland, Norway and Sweden, countries having markedly different utilization of antihypertensive drugs. We found a greater propensity to start antihypertensive drug treatment in Northern Ireland than in Norway and Sweden. This was true both in mild diastolic and isolated systolic hypertension. Yet the utilization of antihypertensive drugs in Sweden is about 60% higher than in Northern Ireland and 30% higher than in Norway. Swedish physicians preferred beta-blockers as their first choice to a greater extent than physicians in Northern Ireland and Norway who selected thiazides more often. In general, the choice of drugs agreed with the sales and prescribing patterns in the three countries. Besides providing more insight in therapeutic traditions the study indicates that the lower prescribing of antihypertensive drugs in Northern Ireland, and to some extent in Norway, compared to Sweden, might be due to differences in true or apparent morbidity.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1432-1041
    Keywords: diabetes ; therapy ; antidiabetic drugs ; therapeutic traditions ; questionnaire survey ; drug utilization ; international differences
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Medicine
    Notes: Summary A questionnaire survey was carried out to explore differences in the approach to treatment of patients with Type II diabetes between physicians in Northern Ireland, Norway and Sweden, and to discover to what extent it could account for the three-fold difference in drug use between the countries. A representative sample of 400 physicians in each country was asked to give their opinions on the choice of therapy for three model cases designed to cover the spectrum of treatment — from diet alone to insulin. Significantly more Swedish (65%) than Northern Irish (51%) and Norwegian (52%) doctors suggested diet alone for uncomplicated diabetes recently discovered in a middle aged, overweight man. For symptomatic diabetes in a 76 year old overweight woman with few retinal microaneurysms, the majority of physicians in all three countries suggested treatment with sulphonylureas. Biguanides were here a more common alternative in Northern Ireland than in Scandinavia. For suspected secondary treatment failure in a 63 year old woman with no signs of complications, insulin was suggested by 71% of the Norwegian doctors but only by 44 and 49% of those in Northern Ireland and Sweden, respectively. General practitioners tended to suggest oral treatment earlier and to maintain it longer than hospital physicians. The study has demonstrated significant differences in the approach to treatment of Type II diabetes mellitus between physicians in the three countries. However, the differences were more prominent in the choice of drugs than in the threshold of drug treatment. The results also fit with qualitative but not with quantitative differences in drug sales between the countries, suggesting that important differences may exist in the prevalence of clinically recognized Type II diabetes.
    Type of Medium: Electronic Resource
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