How the panel numbers are counted
The panel reports are built from a snapshot Great Question takes of your panel every night. A few conventions apply across all of them:- The panel is every candidate in your account that hasn’t been deleted and didn’t come from an external provider. Externally recruited participants are never counted.
- Monthly values are closing snapshots. A month’s value is the last snapshot taken in that month, not a sum or an average of the days.
- Gaps stay gaps. A month with no snapshot shows as empty rather than zero, and no value carries forward across it.
- History starts at the first snapshot. The series begins the first night a snapshot was taken; panel history before that can’t be recovered.
Panel reports
Panel size
How many candidates were in the panel at the end of each month. This is the whole pool, whatever state each candidate is in, not the part of it you can still contact.Panel net change
How much the panel grew or shrank over each month: the panel at the end of the month minus the panel at the end of the month before. Negative means the panel lost more people than it gained. It’s a net figure, so it doesn’t say how many joined and how many left, only where the two landed. The first month in range has no month before it to compare against, so this series starts a month later than the others.Panel movement
Candidates added to and removed from the panel in each month, counted on the day it happened. Added counts everyone who joined that month, including anyone since removed, so added minus removed matches the net change report. One caveat: movement counts on calendar months while net change measures between closing snapshots, so the two agree exactly only when a snapshot ran on the last night of both months. Removed means deleted. Unsubscribing doesn’t remove anyone from the panel; it makes them unreachable, which shows up in the contactable panel report instead.Panel health
The panel split by why someone can or can’t be approached, counted as it stands right now. Contactable is the one to read first: opted in and not excluded by any eligibility filter. Eligible counts only the health filters, Opted in counts only consent, and the remaining buckets (over-invited, over-participated, unresponsive, no-showed, opted out, unsubscribed) name the filter that excluded someone. A person can be in more than one bucket at once, over-invited and unresponsive, for example, so the buckets overlap and don’t add up to the panel. Read each one against the panel size, not against the others. As bars, this report shows the panel today; as a table, it shows the same buckets month by month from the nightly snapshots.Contactable panel
The share of the panel that could actually be approached at the end of each month: opted in (subscribed, consented, and not set to never contact) and not excluded by any health filter. This is the number that matters for “can we run the study,” where panel size only says how many names are on file. It falls when people unsubscribe and when health filters trip, so a panel that’s growing and a panel that’s reachable can move in opposite directions.Panel utilization
The share of the panel invited to a study in each month: the candidates invited at least once that month, over the panel at the end of it. A few definitional details:- Counted from when the invitation was sent, or when the person asked to take part, not from when they were added to the study.
- Someone invited to three studies in a month counts once.
- Studies the product creates to carry a standalone incentive are left out, as are deleted studies and deleted participations.