Medication errors (ME) are a major concern to healthcare systems. Most studies evaluated ME occurring in healthcare facilities; only few focused on ME outside them. The objective was to characterise ME occurring outside healthcare facilities. A prospective observational follow-up study evaluating all ME occurring outside healthcare facilities reported to a national poison information centre during a 5-month period. For each ME case, a detailed questionnaire was filled and a follow-up call was made within 7 days. The collected data included demographics, circumstances, type of error and outcome. Of 1381 consecutive ME cases were included; 97.8% involved a single incident and 88.3% one drug. The main characteristics of the ME were as follows: children younger than 6 years old (58.9%), parents responsible for 55.6% of cases, wrong dose 34.5% and different medication 30.1%. Analgesics (27.4%) and antimicrobials (12.2%) were the most common pharmaceuticals. The main reasons for the ME were look-alike packaging (31.4%) and misunderstood instructions (28%). Most followed up patients (97.1%) were asymptomatic or mildly affected; there was one severe case and no mortality. Most ME occurring outside healthcare facilities are single incidents, involving young children who were administered a wrong dose or medication due to look-alike packaging or misunderstood instructions with asymptomatic or mild outcome. Improved packaging, labelling and patient education are suggested to reduce ME.Medication errors (ME) are a major cause of morbidity and mortality [1]. In the USA, the estimated annual death toll of ME is 98,000 cases [2]. While most research on ME is conducted in healthcare facilities, there is limited information on ME occurring in the patients' home. Data collection on patient behaviour and use of medications in the home is difficult and inconsistent. Poison centres serve the general public and record relevant data on ME reported by the public. Several studies from poison centres on ME were published over the years [3][4][5][6][7][8][9][10][11][12][13][14][15], and most were retrospective [4][5][6][7][8][9][10][11]13,15]. Some evaluated only specific age groups, young children [3,7,12,13] and elderly patients [8,9]. Some studies concentrated on iatrogenic errors and did not report any ME outside healthcare facilities [4,5,10]. Shah and Barker published a retrospective study with no follow-up on ME occurring outside hospitals [11]. A more comprehensive assessment of ME in the public may improve our understanding of the characteristics and origin of such errors and lay the ground for preventive measures. The objective of our study was to characterise ME occurring outside healthcare facilities.
MethodsWe conducted a prospective observational follow-up study of all ME outside healthcare facilities reported to the Israel National Poison Information Center (IPIC) between 1 August and 31 December 2008. The IPIC serves a population of 7,956,000 people [16]. This is the only national poison information centre in the...