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TERM
Percent Unduplicated Category Buyers
Share of buyers who buy only once in the period.
Definition
Unduplicated category buyers are households counted once even if they make multiple purchases.
How to Calculate
Count unique buying households in the period, divide by household universe.
Why it Matters
Avoids double counting buyers.
Key Advantages
Shows reach cleanly.
Example
1 million unduplicated buyers in Q2.
Use it to
Count distinct households buying the category to size reach without double counting cross-category shoppers. Track growth in unduplicated buyers to confirm category expansion.
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