Persons Reported Sick per 100k Customers Served
Our "Persons Reported Sick per 100k Customers" metric is our customer-centric measure. This metric aims to provide a clear picture of food safety risk from the individual customer's perspective, accounting for the actual number of people affected and the total customer base.
How We Calculate It
Calculate the Average Check per Customer
For some restaurants, this information is available in their 10-K reports.
When data is not directly available, we impute it by conducting thorough research:
First, we analyze menus by year to understand pricing trends.
We then deduce typical consumer spending patterns tailored to each restaurant's style (e.g., whether it's a quick-service spot where customers usually order a drink and meal, or a sit-down restaurant where one might order an appetizer, main course, and dessert, or just one of these options).
Example: Based on the menu and consumer spending patterns research, Applebee’s average check size in 2022 was $30. We kept the average check size for 2023 the same, as a 2023 article states, “we can see that our guests … still consistently [come] to us and maintain their average check.”
Our method is customized for each restaurant to reflect the specific offerings and service model. This approach helps us estimate the average check size for the average customer.
Estimate Total Customers Served Annually
The following formula gives us an approximation of how many customer transactions occurred per year:
Count Persons Reported Sick
Importantly, we use the number of persons reported sick, not just the number of reports.
A single report might indicate multiple people were affected (e.g., A parent submits a report about food poisoning that impacted their family of five).
This approach provides representation of the scale of illnesses.
Calculate the Metric
The formula looks like this:
Why This Metric Matters
This metric is crucial for several reasons:
Customer-Centric: It provides a risk assessment from the individual diner's perspective.
Accounts for Severity: By counting persons affected rather than just reports, it better reflects the scale of incidents.
Normalizes for Customer Volume: It allows fair comparison between high-volume and low-volume establishments.
Adaptable to Different Restaurant Types: Our tailored approach to calculating average check size ensures the metric is relevant across various dining styles.
Example Calculations and Metrics - Chili’s Grill & Bar
Description | Source | 2021 |
Average Sales Per Store 000's | 10k | $4,350 |
US Store Count (Company-Owned + Franchise) | 10k | 1,235 |
Average Check Per Customer | 10k | $15.50 |
Imputed # US Customers per Year | Calculated | 346,596,774 |
Imputed US Revenue 000's (Company-Owned + Franchise) | Calculated | $5,372,250 |
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