| Variable | Frequency (Percentage) |
| Packaging |
|
| Triple packaged | 467 (84.0) |
| Not triple packaged | 89 (16.0) |
| Volume |
|
| >3 mls | 505 (90.8) |
| <3mls | 44 (7.9) |
| Timeliness |
|
| ≤3 days | 313 (56.3) |
| >3 days | 164 (29.5) |
| Missing | 79 (14.2) |
| Appearance |
|
| Salivary | 215 (38.7) |
| Not salivary* | 336 (61.3) |
| Quality** |
|
| Poor quality | 365 (64.0) |
| Good quality | 162 (29.1) |
| Missing | 38 (6.8) |