| Observation Type | Quantitative Cases | Qualitative Cases | Total Observations |
|---|---|---|---|
| Visual | 2821 (74.1%) | 537 (69.7%) | 4974 |
| Knowledge | 840 (22.1%) | 256 (33.2%) | 1233 |
| Auditory | 733 (19.2%) | 124 (16.1%) | 901 |
| Mixed | 884 (23.2%) | 192 (24.9%) | 1107 |
| Other | 206 (5.4%) | 67 (8.7%) | 283 |