Statsig enables you to breakdown metrics into a single set of non-overlapping dimensions for deep dive analyses. For example, you can breakdown an event such as add-to-cart into product categories such as sports, toys, appliances, electronics. To do this, you would simply log add-to-cart events and provide the product category in the event's value field. See the Statsig SDK reference guide to learn more.
Providing the value field with logged events allows you to break down the impact on the total add-to-cart events by category in Pulse as shown below. This enables you to zero in on the category that's most impacted by your experiment.
Statsig recommends keeping the options used for the value parameter to fewer than 20. While Statsig can handle more, the console will prioritize tracking the most common dimensions and consolidate less frequent values into the "other" bucket.
Statsig also supports metric dimensions for custom metrics that are Aggregations. To set this up, log your dimension as a value and the number to be tallied as a metadata field.