> ## Documentation Index > Fetch the complete documentation index at: https://docs.trypillow.ai/llms.txt > Use this file to discover all available pages before exploring further. # Study metrics > What each number on the Studies list and the study page counts: Opens, Interviews, Reply rate, completed interviews, and replies. This page defines every count shown for a study on the **Studies** list and on the study page. Only interviews from the live link count: preview and test-link interviews never appear in any metric. **Opens**, **Interviews**, and **Reply rate** appear as columns and filters in the **Studies** list and in the study page footer. * **Opens**: interviews started from the live link, whether or not the participant replied. A participant counts once per browser: reopening the link in the same browser returns to the same interview. * **Interviews**: opens where the participant replied at least once. * **Reply rate**: **Interviews** divided by **Opens**, rounded to a whole percent. * **Completed interviews**: interviews marked complete (see [Interviews](/concepts/interviews)). Shown under **Completed interview limit**, as `32 of 50 interviews complete`, or `32 interviews complete` when no limit is set. This is the count the [completed interview limit](/guides/end-study) uses. * **Replies**: messages the participant sent in one interview. Shown on each row of the interview list, as `12 replies`. ## Example For the checkout study, 400 **Opens** and 120 **Interviews** give a **Reply rate** of `30%`: 280 shoppers opened the link and left without typing. If 90 of the 120 interviews are complete and no limit is set, **Completed interview limit** reads `90 interviews complete`. ## Related Sort and filter the Studies list by these metrics. Interviews used against your trial or plan.