Age and Sex Patterns of Drug Prescribing in a Defined American Population.
ABSTRACT To describe the age and sex patterns of drug prescribing in Olmsted County, Minnesota.
Population-based drug prescription records for the Olmsted County population in 2009 were obtained using the Rochester Epidemiology Project medical records linkage system (n=142,377). Drug prescriptions were classified using RxNorm codes and were grouped using the National Drug File-Reference Terminology.
Overall, 68.1% of the population (n=96,953) received a prescription from at least 1 drug group, 51.6% (n=73,501) received prescriptions from 2 or more groups, and 21.2% (n=30,218) received prescriptions from 5 or more groups. The most commonly prescribed drug groups in the entire population were penicillins and β-lactam antimicrobials (17%; n=23,734), antidepressants (13%; n=18,028), opioid analgesics (12%; n=16,954), antilipemic agents (11%; n=16,082), and vaccines/toxoids (11%; n=15,918). However, prescribing patterns differed by age and sex. Vaccines/toxoids, penicillins and β-lactam antimicrobials, and antiasthmatic drugs were most commonly prescribed in persons younger than 19 years. Antidepressants and opioid analgesics were most commonly prescribed in young and middle-aged adults. Cardiovascular drugs were most commonly prescribed in older adults. Women received more prescriptions than men for several drug groups, in particular for antidepressants. For several drug groups, use increased with advancing age.
This study provides valuable baseline information for future studies of drug utilization and drug-related outcomes in this population.
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ABSTRACT: The aim of this work was to study time trends of antidepressant drug (AD) prescriptions in a geographically defined US population between 2005 and 2011 for men and women separately. Using the Rochester Epidemiology Project medical records-linkage system, we identified all Olmsted County, MN residents who received AD outpatient prescriptions between 2005 and 2011 (7 years). We calculated the annual age- and sex-specific prevalence over 7 years and used generalized estimating equation models to test for time trends. The prevalence of subjects receiving at least one AD prescription was approximately two times higher in women than in men consistently across the 7 years of the study. The standardized annual prevalence increased from 10.8 % in 2005 to 14.4 % in 2011 overall, from 7.0 % in 2005 to 9.9 % in 2011 for men, and from 14.4 % in 2005 to 18.6 % in 2011 for women. The absolute percent increase was greater in women (4.2 vs. 2.9 %; standardized); however, the relative percent increase was greater in men (41.4 vs. 29.2 %; standardized). The relative percent increase was greater in the age group 65+ years for both men and women. AD prescriptions are increasing over time, especially in the elderly. Women receive more AD prescriptions than men. However, the relative increase in AD prescriptions over time is greater in men than women.Archives of Women s Mental Health 08/2014; 17(6). · 1.96 Impact Factor