How can I determine the state of an Extended Events session (started or stopped) in Azure SQL Database?

How can I determine the state of an Extended Events session (started or stopped) in Azure SQL Database? The DMV sys.dm_xe_database_sessions doesn't have this information, and none of the other sys.dm_xe_* DMVs seem to have an appropriate column. I want to do something like this to get a list of the sessions and the state of each for the current database:

SELECT s.[name], x.???
FROM sys.dm_xe_database_sessions s 
JOIN sys.dm_xe_??? x ON s.[name] = x.[name]