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Evaluating a restrictive formulary system by assessing nonformulary-drug requests.

Nonformulary-drug requests were used to evaluate a restrictive formulary system in a large university hospital, and a telephone survey of eight similar hospitals was conducted to assess the restrictiveness of their formulary systems. Nonformulary-drug requests were evaluated by two drug information pharmacists over a 12-month period (January-December 1984) to assess the frequency with which nonformulary items were ordered, the costs associated with the procurement of nonformulary drug products, and the rationales given by physicians when ordering nonformulary products. Of all nonformulary requests, 65% were for drugs previously evaluated by the pharmacy and therapeutics committee and denied admission to the formulary. A cost savings of $1887 would have resulted if formulary alternates had been used instead of nonformulary products. Excluding 22% of nonformulary items that were requested for the continuation of preadmission drug therapy, only 13% of the rationales for the remaining requests were appropriate. Although the eight other hospitals surveyed said they had restrictive formularies, all had frequent requests and procedures for procuring nonformulary items and some formularies included most available drugs. The formulary system at the study hospital was considered restrictive, but procedures for nonformulary-drug requests limited the effectiveness of the system. If any benefit is to result from formulary systems, hospitals must strengthen their enforcement of formulary restrictions.

Costs and Cost Analysis

Cefotaxime and ceftriaxone use evaluation in pediatrics. Considerations of cost effectiveness.

In 1993, there was a change from ceftriaxone to cefotaxime in the inpatient pediatric division of the Johns Hopkins Hospital. The annual cost savings resulting from this change were estimated. The educational efforts of the pediatric division pharmacists resulted in an increase in appropriate drug selection from 55% to 93%. The estimated annual cost saving was $18,618.

Bacterial Infections

Drug formularies--good or evil? A view from the EEC.

The use of standard treatment schemes is believed to provide easier, safer, and more rational prescribing of drugs. Provision of neutral information on relative costs and merits of individual therapies may induce physicians to prescribe more rationally and cost effectively. A drug formulary must be developed by using clinical evidence of efficacy, taking into account all available preparations, choosing the most cost effective formulation of the drug, and as far as possible complying with formularies implemented by other health institutions. Planning process and preparation time are fundamental to formulary development work. A restrictive drug policy in the hospital environment will save time in the pharmacy, as fewer drugs are handled, and will improve prescribing as the staff have fewer drugs to familiarize themselves with. The potential benefits from increased generic prescribing, lower stock levels, and closer working relationships between members of the formulary team should all be considered. The benefit of this interdisciplinary approach to drug therapy will be rapidly recognized.

Belgium

Group purchasing: an overview.

The various types and operational methods of purchasing groups are described, and evaluation of groups is discussed. Since group purchasing is increasing in popularity as a method of controlling drug costs, community and hospital pharmacy managers may need to evaluate various groups to determine the appropriateness of their services. Groups are categorized as independent, system based, or alliance or association based. Instead of "purchasing," some groups develop contracts for hospitals, which then purchase directly from the vendor. Aside from this basic difference between groups that purchase and groups that contract, comparisons among groups are difficult because of the wide variation in sizes and services. Competition developing from diversification among groups has led to "super groups," formed from local and regional groups. In evaluating groups, advantages and disadvantages germane to accomplishing the member's objectives must be considered. To ensure a group's success, members must be committed and support the group's philosophies; hospital pharmacists must help to establish a strong formulary system. To select vendors, groups should develop formal qualification and selection criteria and should not base a decision solely on price. The method of solicitation (bidding or negotiating), as well as the role of the prime vendor, should be studied. Legal implications of group purchasing, especially in the areas of administrative fees and drug diversion, must also be considered. The most advantageous group for each organization will include members with common missions and will be able to implement strategies for future success.

Biological Availability

Pharmacy newsletter evaluation by nurses.

A survey of staff nurses was conducted to determine readership and evaluate the usefullness of a pharmacy newsletter. Questionnaires were sent to a random sample of 50 nurses. Of the respondents, 91% claimed to read the newsletter at least occasionally. Formulary and pharmacy policy information was considered most important. Interest in drug quizzes and features concerning drug therapy appeared to be high enough to make the newsletter an aid to inservice education. Readership was felt to be at a sufficient level to justify publication of a regular monthly newsletter for staff nurses.

Communication

Multiattribute evaluation in formulary decision making as applied to calcium-channel blockers.

The use of multiattribute utility theory (MAUT) to make a formulary decision involving calcium-channel blockers (CCBs) is described. The MAUT method is a procedure for identifying, characterizing, and comparing the many variables that may affect a decision. Although applications in pharmacy have been infrequent, MAUT should be particularly appealing to formulary committees. The steps of the MAUT method are (1) determine the viewpoint of the decision makers, (2) identify the decision alternatives, (3) identify the attributes to be evaluated, (4) identify the factors to be used in evaluating the attributes, (5) establish a utility scale for scoring each factor, (6) transform the values for each factor to its utility scale, (7) determine weights for each attribute and factor, (8) calculate the total utility score for each decision alternative, (9) determine which decision alternative has the greatest total score, and (10) perform a sensitivity analysis. The viewpoint of a formulary committee in a health maintenance organization was simulated to develop a model for using the MAUT method to compare CCBs for single-agent therapy of chronic stable angina in ambulatory patients for one year. The attributes chosen were effectiveness, safety, patient acceptance, and cost and weighted 36%, 29%, 21%, and 14%, respectively, as contributions to the evaluation. The rank order of the decision alternatives was (1) generic verapamil, (2) brand-name verapamil, (3) diltiazem, (4) nicardipine, and (5) nifedipine. The MAUT method provides a standardized yet flexible format for comparing and selecting among formulary alternatives.

Calcium Channel Blockers

Formulary evaluation of third-generation cephalosporins using decision analysis.

A structured, objective approach to formulary review of third-generation cephalosporins using the decision-analysis model is described. The pharmacy and therapeutics (P&T) committee approved the evaluation criteria for this drug class and assigned priority weights (as percentages of 100) to those drug characteristics deemed most important. Clinical data (spectrum of activity, pharmacokinetics, adverse effects, and stability) and financial data (cost of acquisition and cost of therapy per day) were used to determine ranking scores for each drug. Total scores were determined by multiplying ranking scores by the assigned priority weights for the criteria. The two highest-scoring drugs were selected for inclusion in the formulary. By this decision-analysis process, the P&T committee recommended that all current third-generation cephalosporins (cefotaxime, cefoperazone, and moxalactam) be removed from the institutions's formulary and be replaced with ceftazidime and ceftriaxone. P&T committees at other institutions may structure their criteria differently, and different recommendations may result. Using decision analysis for formulary review may promote rational drug therapy and achieve cost savings.

Cephalosporins