Objective: To determine which attributes of clinical practice guidelines influence the use of guidelines in decision making in clinical practice. Design: Observational study relating the use of 47 different recommendations from 10 national clinical guidelines to 12 different attributes of clinical guidelines-for example, evidence based, controversial, concrete. Setting: General practice in the Netherlands. Subjects: 61 general practitioners who made 12 880 decisions in their contacts with patients. Main outcome measures: Compliance of decisions with clinical guidelines according to the attribute of the guideline. Results: Recommendations were followed in, on average, 61% (7915/12 880) of the decisions. Controversial recommendations were followed in 35% (886/2497) of decisions and non-controversial recommendations in 68% (7029/10 383) of decisions. Vague and non-specific recommendations were followed in 36% (826/2280) of decisions and clear recommendations in 67% (7089/10 600) of decisions. Recommendations that demanded a change in existing practice routines were followed in 44% (1278/2912) of decisions and those that did not in 67% (6637/9968) of decisions. Evidence based recommendations were used more than recommendations for practice that were not based on research evidence (71% (2745/3841) v 57% (5170/9039)). Conclusions: People and organisations setting evidence based clinical practice guidelines should take into account some of the other important attributes of effective recommendations for clinical practice.
Segmentation of the target group is necessary for effective dissemination of guidelines or new research findings. For some doctors it is desirable to make evidence available quickly, for others spreading the guidelines through the local network may be effective, while for another group a more active, personal approach may be necessary.
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