Table 4.
Number of papers by subcategory and data type
| Subcategory versus Data type | Hypothetical | Real | No data | Total |
|---|---|---|---|---|
| CFR | 0 | 6 | 0 | 6 |
| First responders | 0 | 38 | 2 | 40 |
| Laypersons and Bystanders | 1 | 39 | 4 | 44 |
| Volunteers | 1 | 32 | 4 | 37 |
| Total | 2 | 115 | 10 | 127 |
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