Studies reporting mortality of pleural infections by RAPID risk categories
| Study | Patients n | Mortality at 3 months | ||
| RAPID score 0–2 | RAPID score 3–4 | RAPID score 5–7 | ||
| Rahman et al. [12], 2014 | ||||
| Derivation cohort | 358 | 1% | 12% | 51% |
| Validation cohort | 191 | 3% | 9% | 31% |
| White et al. [15], 2015 | 187 | 1.5% | 17.8% | 44.7% |
| Wong and Yap [16], 2016 | 77 | 2.9% | 27.6% | 28.6% |
| Touray et al. [17], 2018 | 98 | 5.3% | 8.3% | 22.6% |
| Corcoran et al. [19], 2020 | 542 | 2.3% | 9.2% | 29.3% |
| TOTAL | 1453# | 1.9% | 11.7% | 35.6% |
#: of this total number of patients, 625, 564 and 264 belonged to the low-, medium- and high-risk RAPID (Renal function, Age, Purulence, Infection source, Dietary factors) categories, respectively.