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The association between drug pricing and drug shortage: A retrospective database analysis
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  • Mohammad Alowairdhi,
  • Fatimah Alhussain ,
  • Maha Alomran,
  • Ohoud Almadani ,
  • Norah Alkhammash,
  • Shayma Alyabes ,
  • Sultan Alharbi ,
  • Esraa Almudaiheem,
  • Reem Alhaider,
  • Sara Alhassan,
  • Zainab Almuallem,
  • Nuha Algain,
  • Abdulaziz Alshehri ,
  • Thamir Alshammari,
  • Turki Althunian
Mohammad Alowairdhi
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Fatimah Alhussain
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Maha Alomran
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Ohoud Almadani
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Norah Alkhammash
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Shayma Alyabes
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Sultan Alharbi
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Esraa Almudaiheem
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Reem Alhaider
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Sara Alhassan
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Zainab Almuallem
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Nuha Algain
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Abdulaziz Alshehri
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Thamir Alshammari
Saudi Food and Drug Authority
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Turki Althunian
Saudi Food and Drug Authority

Corresponding Author:[email protected]

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Abstract

Aims: Studies suggested that drug pricing might be a risk factor for drug shortage; however, a few provided a quantitative assessment of this possible causal association. This study aimed to assess whether drug prices are associated with drug shortage incidents. Methods: This was a retrospective database analysis study. Drugs with shortage notifications (one drug per notification) that were sent to the Saudi Food and Drug Authority (SFDA) from Jan/2017 to Dec/2020 by different stakeholders were included in the study. For each drug, the foreign-to-Saudi-price ratio (FTSPR) was calculated (FTSPR= mean international price/Saudi price). Accordingly, drugs were split into three groups: Group 1 (FTSPR >1]), Group 2 (FTSPR =1]), and Group 3 (FTSPR <1]). The primary outcomes were the ratio of mean counts (mCR) between the three groups with Group 3 chosen as a control group. The study outcomes were analyzed using a negative binomial regression model adjusting for the measured confounders. All study analyses were conducted using RSudio Version 1.2.5033. Results: A total of 900 drugs were included (Group 1=348, Group 2=345, Group 3=209). The mean count of Group 1 higher was higher than Group 3 (mCR: 1.88; 95% confidence interval [CI] 1.24 to 2.83), while and mean counts of Group 2 vs. Group 3 were comparable (mCR: 1.39; 95%CI 0.92 to 2.09). Discussion: The results of our study showed that shortage was associated with drugs that are more expensive outside Saudi Arabia. Additional international studies are needed to explore this causal association.