sample/early-bird category
Datafile
| Value label | Value | Absolute frequency | Relative frequency |
|---|---|---|---|
| missing | -9 | 2 | 0.08% |
| core - invite with incentive | 1 | 346 | 14.7% |
| core - invite no incentive | 2 | 366 | 15.55% |
| core - no invite | 3 | 676 | 28.72% |
| refreshment sample | 4 | 964 | 40.95% |
| Total | 2354 | 100.0% |
