The principle of rebasing consists in refining your comparison universe. Your comparator is no longer the entire pharmacy universe (as in the case of a "classic" distribution), but a specific variation of your market that you can define and that covers all days of the month.
For a given product, the smoothed and rebased stockist numerical distribution compares the number of stockist pharmacies of your selection, not to the total number of stockist pharmacies for all products, but to the number of stockist pharmacies of one of your market declinations.
Rebased stockist numerical distribution =
Number of pharmacies in your selection
Number of pharmacies in your market declination
The interpretation of a rebased distribution of less than 5% should be taken with caution.
Product A belongs to the nebulizer segment.
You do not want to calculate your ratio on all the products stocked in pharmacies, but only on the pharmacies stocking nebulizers.
Product A is stocked in 4,000 pharmacies for a given month on all days of the month.
8,000 pharmacies have stocked a nebulizer for that month.
So, the rebased numerical distribution of product A stocked by 50% (4,000 / 8,000), means that every second pharmacy stocking nebulizers has stocked product A on every day of the month.
Smoothed rebased stocking distribution can be written as Smoothed Rebased DNS. It is translated into English as Smoothed Stock Numeric Distribution Rebased or Stock ND Rebased.
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This indicator can only be viewed on a monthly basis. It is therefore normal that it does not appear in YTD or MAT.