Trends in Outpatient Antibiotic Use in 3 Health Plans.

OBJECTIVES: Previous analyses of data from 3 large health plans suggested that the substantial downward trend in antibiotic use among children appeared to have attenuated by 2010. Now, data through 2014 from these same plans allow us to assess whether antibiotic use has declined further or remained stable. METHODS: Population-based antibiotic-dispensing rates were calculated from the same health plans for each study year between 2000 and 2014. For each health plan and age group, we fit Poisson regression models allowing 2 inflection points. We calculated the change in dispensing rates (and 95% confidence intervals) in the periods before the first inflection point, between the first and second inflection points, and after the second inflection point. We also examined whether the relative contribution to overall dispensing rates of common diagnoses for which antibiotics were prescribed changed over the study period. RESULTS: We observed dramatic decreases in antibiotic dispensing over the 14 study years. Despite previous evidence of a plateau in rates, there were substantial additional decreases between 2010 and 2014. Whereas antibiotic use rates decreased overall, the fraction of prescribing associated with individual diagnoses was relatively stable. Prescribing for diagnoses for which antibiotics are clearly not indicated appears to have decreased. CONCLUSIONS: These data revealed another period of marked decline from 2010 to 2014 after a relative plateau for several years for most age groups. Efforts to decrease unnecessary prescribing continue to have an impact on antibiotic use in ambulatory practice.

Childhood infections, antibiotics, and resistance: what are parents saying now?

Parental misconceptions and even "demand" for unnecessary antibiotics were previously viewed as contributors to overuse of these agents. We conducted focus groups to explore the knowledge and attitudes surrounding common infections and antibiotic use in the current era of more judicious prescribing. Among diverse groups of parents, we found widespread use of home remedies and considerable concern regarding antibiotic resistance. Parents generally expressed the desire to use antibiotics only when necessary. There was appreciation of inherent error in the diagnosis of common infections, with most trust placed in providers with whom parents had long-standing relationships. While some parents had experience with "watchful waiting" for otitis media, there was little enthusiasm for this approach. While there may still be room for further education, it appears that parents have become more informed and sophisticated regarding appropriate uses of antibiotics. This has likely contributed to the declines seen in their use nationally.

Trends in otitis media treatment failure and relapse.

OBJECTIVES: The goals were to describe trends in acute otitis media, treatment failure, and relapse and in high-dose amoxicillin use and to determine whether treatment of acute otitis media with high-dose amoxicillin was associated with treatment failure or relapse. METHODS: We conducted a retrospective study of acute otitis media visits made between 1996 and 2004 by children 2 months to 12 years of age in a large group practice, using computerized data. We defined acute otitis media as an otitis media visit with antibiotics dispensed (preceded by 30 days without otitis media visits), treatment failure as initiation of treatment with a second antibiotic before the first prescription was finished, and relapse as initiation of antibiotic treatment after the first prescription was finished but within 30 days after the index acute otitis media episode. The primary independent measure was high-dose amoxicillin (>70 mg/kg per day). We evaluated changes over time and determined whether high-dose amoxicillin use was associated with otitis media treatment failure or relapse. RESULTS: We identified 111,335 acute otitis media visits over a 9-year period. The incidence of acute otitis media decreased from 385.1 visits per 1000 enrollees in 1996 to 188.8 visits per 1000 enrollees in 2004. The proportion of acute otitis media visits treated with high-dose amoxicillin increased from 1.7% in 1996 to 41.9% in 2004. Both otitis media treatment failure and relapse rates decreased from 1996 to 2004 (from 3.9% to 2.6% and from 9.2% to 8.9%, respectively). The odds of treatment failure or relapse did not differ between acute otitis media episodes treated with high-dose and low-dose amoxicillin. CONCLUSIONS: During the past decade, acute otitis media, treatment failure, and relapse became less common and high-dose amoxicillin use increased. However, high-dose amoxicillin treatment did not reduce the risk of individual infections resulting in adverse outcomes.

Teaching population health as a basic science at Harvard Medical School.

In 2006-2007, Harvard Medical School implemented a new, required course for first-year medical and dental students entitled Clinical Epidemiology and Population Health. Conceived of as a "basic science" course, its primary goal is to allow students to develop an understanding of caring for individuals and promoting the health of populations as a continuum of strategies, all requiring the engagement of physicians. In the course's first iteration, topical content accessible to first-year students was selected to exemplify physicians' roles in addressing current threats to population health. Methodological areas included domains of clinical epidemiology, decision sciences, population-level prevention and health promotion, physicians' roles in the public health system, and population-level surveillance and intervention strategies. Large-group settings were selectively used to frame the relevance of each topic, and conceptual learning of statistical and epidemiologic methods occurred in conference groups of 24 students. Finally, tutorials of eight students and one or two faculty were used for critical reading of published studies, review of problem sets, and group discussion of population health issues. To help students appreciate the structure and function of the public health system and physicians' role in public health emergencies, the course included a role-playing exercise simulating response to an influenza pandemic. The first iteration of the course was well received, and assessment of students suggested mastery of basic skills. Preclinical courses represent a progressive step in developing a workforce of physicians who embrace their responsibility to improve the health of the population as a whole, as well as the health of the patient in front of them.

Prescription drug use in pregnancy.

OBJECTIVE: The purpose of this study was to provide information on the prevalence of the use of prescription drugs among pregnant women in the United States. STUDY DESIGN: A retrospective study was conducted with the use of the automated databases of 8 health maintenance organizations that are involved in the Health Maintenance Research Network Center for Education and Research on Therapeutics. Women who delivered of an infant in a hospital from January 1, 1996, through December 31, 2000, were identified. Prescription drug use according to therapeutic class and the United States Food and Drug Administration risk classification system was evaluated, with the assumption of a gestational duration of 270 days, with three 90-day trimesters of pregnancy, and with a 90-day period before pregnancy. Nonprescription drug use was not assessed. RESULTS: During the period 1996 through 2000, 152,531 deliveries were identified that met the criteria for study. For 98,182 deliveries (64%), a drug other than a vitamin or mineral supplement was prescribed in the 270 days before delivery: 3595 women (2.4%) received a drug from category A; 76,292 women (50.0%) received a drug from category B; 57,604 women (37.8%) received a drug from category C; 7333 women (4.8%) received a drug from category D, and 6976 women (4.6%) received a drug from category X of the United States Food and Drug Administration risk classification system. Overall, 5157 women (3.4%) received a category D drug, and 1653 women (1.1%) received a category X drug after the initial prenatal care visit. CONCLUSION: Our finding that almost one half of all pregnant women received prescription drugs from categories C, D, or X of the United States Food and Drug Administration risk classification system highlights the importance of the need to understand the effects of these medications on the developing fetus and on the pregnant woman.