• David W Hutton, Angela Rose, Dianne C Singer, Carolyn B Bridges, David Kim, Jamison Pike, and Lisa A Prosser.
• Department of Health Management and Policy, University of Michigan School of Public Health, 1415 Washington Heights, Room M3525, Ann Arbor, MI 48109-2029. Email: dwhutton@umich.edu.
• Am J Manag Care. 2019 Nov 1; 25 (11): e334e341e334-e341.

ObjectivesTo identify the most important reasons underlying decisions to stock or not stock adult vaccines.Study DesignUS physicians, nurses, pharmacists, and administrators of internal medicine, family medicine, obstetrics/gynecology, and multispecialty practices who were involved in vaccine stocking decisions (N = 125) completed a best-worst scaling survey online between February and April 2018.MethodsSixteen potential factors influencing stocking decisions were developed based on key informant interviews and focus groups. Respondents selected factors that were most and least important in vaccine stocking decisions. Relative importance scores for the best-worst scaling factors were calculated. Survey respondents described which vaccines their practice stocks and reasons for not stocking specific vaccines. Subgroup analyses were performed based on the respondent's involvement in vaccine decision making, role in the organization, specialty, and affiliation status, as well as practice characteristics such as practice size, insurance mix, and patient age mix.ResultsRelative importance scores for stocking vaccines were highest for "cost of purchasing vaccine stock," "expense of maintaining vaccine inventory," and "lack of adequate reimbursement for vaccine acquisition and administration." Most respondents (97%) stocked influenza vaccines, but stocking rates of other vaccines varied from 39% (meningococcal B) to 83% (tetanus-diphtheria-pertussis). Best-worst scaling results were consistent across respondent subgroups, although the range of vaccine types stocked differed by practice type.ConclusionsEconomic factors associated with the purchase and maintenance of vaccine inventory and inadequate reimbursement for vaccination services were the most important to decision makers when considering whether to stock or not stock vaccines for adults.

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