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Warfarin is favored over newer direct oral anticoagulants (DOACs) for many older adults. However, its use necessitates rigorous monitoring due to the fine line between toxic and therapeutic doses. Few studies have evaluated the anticoagulation quality of warfarin among elderly patients in Saudi Arabia. This study aimed to assess and identify factors affecting the anticoagulation quality of warfarin using the time in the therapeutic range (TTR) among older adults attending two hospitals in Saudi Arabia. Additionally, we aimed to evaluate differences in the anticoagulation quality of warfarin when managed by pharmacists or physicians. This cross-sectional study was conducted at King Abdullah bin Abdulaziz University Hospital (KAAUH) and King Fahad Medical City (KFMC) in Riyadh, Saudi Arabia. After calculating the TTR of each patient, the anticoagulation control level was determined using these values: a) good control: >70 %; b) intermediate control: 50-70 %; c) poor control: <50 %. A total of 132 patients prescribed warfarin therapy for different indications were included. Most patients (45.5 %) had poor control with TTRs < 50 %, while 18.2 % had intermediate control, and 36.4 % had good control. Our exploratory findings suggest that having three or more comorbidities was a significant factor associated with a poor TTR [odds ratio (OR) = 3.36; (95 % confidence interval 1.28-8.81); P  = 0.014]. Thus, the anticoagulation quality of warfarin among older adult patients was poor in two Saudi Arabian tertiary hospitals, and the number of comorbidities was a potentially poor TTR predictor., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Author(s).)

Background: Key performance indicators (KPIs) are a set of measures used to help an organization in assessing and achieving goals critical to success. The aim of this study was to quantify the clinical pharmacists' contribution to patient care in a tertiary care hospital using predefined clinical pharmacy KPIs. Method: This study was a prospective, observational study conducted by the Pharmaceutical Care Division of a tertiary care hospital. Clinical pharmacy KPIs were submitted by each clinical pharmacist on a monthly basis for 12 months during 2017. All clinical pharmacists up to the managerial level were included in the study. Data were analyzed, stratified, and correlated using Microsoft Excel, JMP statistical software, and Spearman correlation. The study was approved by the hospital's Office of Research Affairs, RAC number 2171-080. Results: A total of 42 clinical pharmacists reviewed 104 728 patient encounters. They performed an adjusted average of 1221 interventions with an acceptance rate of 91.5%, 273 medication reconciliations, 325 discharge consultations, 332 pharmacokinetic consultations, 700 total parenteral nutrition consultations and follow-ups, and 12 688 electronic order verifications per clinical pharmacist per year. These interventions collectively resulted in a cost saving of $316 087.65 per clinical pharmacist per year. Statistical significance with positive correlation was noted for a number of precepted residents/students and clinical pharmacists' experience ( R = 0.382, P = .013) and board certification ( R = 0.428, P = .0047). Conclusion: Clinical pharmacy KPIs were able to quantify the clinical pharmacists' contributions to patient care and cost savings, which may lead to improve, standardize, and benchmark clinical pharmacy activities in the region., Competing Interests: Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2020.)