The following table has been used to initialize the participation statuses registry.
+--------------------+---------+--------------------------+ | Participant Status | Status | Reference | +--------------------+---------+--------------------------+ | NEEDS-ACTION | Current | RFC 5545, Section 3.2.12 | | | | | | ACCEPTED | Current | RFC 5545, Section 3.2.12 | | | | | | DECLINED | Current | RFC 5545, Section 3.2.12 | | | | | | TENTATIVE | Current | RFC 5545, Section 3.2.12 | | | | | | DELEGATED | Current | RFC 5545, Section 3.2.12 | | | | | | COMPLETED | Current | RFC 5545, Section 3.2.12 | | | | | | IN-PROCESS | Current | RFC 5545, Section 3.2.12 | +--------------------+---------+--------------------------+