[Factors affecting general practitioners' choice of drug therapy: A study in primary healthcare in Iceland].

INTRODUCTION: This study aimed to analyse several factors that influence the decision-making of primary care physicians in Iceland in their choice of drug therapy for their patients. Also, to find which factors can act as a hindrance in making the best choices. Finally, to analyse which elements could be most important in facilitating decisions. MATERIAL AND METHODS: A questionnaire was sent by e-mail to physicians working in primary care in Iceland. The questionnaire comprised closed questions, open text boxes, and ranking questions. The data was processed and analysed using Microsoft Excel. RESULTS: The total number of primary care physicians who responded to the questionnaire was 93, a response rate of 40.7% of all the primary care physicians. The results reveal that physicians working in primary care consider clinical guidelines, the Icelandic National Formulary, and personal experience to be the most important factors when choosing a medication. Primary care physicians strongly agree that the lack of drug interaction software connected to medical records is a shortcoming. The most important factors that need improvement to facilitate primary care physicians' decision-making are drug formularies and interaction software. CONCLUSION: The results suggest some factors that support physicians in primary care in making decisions when choosing drug therapy, such as a drug formulary, drug interaction software, information about patients' drug therapy, variable length in face-to-face consultations, evidence based information on new drugs, and counselling provided by clinical pharmacists.