1. Study design (selection score) | Â |
 a. Prospective clinical studies (any type) |  |
  - Consecutive enrolment | 2 |
  - Unspecified/random enrolment | 1 |
 b. Autopsy studies |  |
  - Consecutive enrolment | 2 |
  - Unspecified/random enrolment | 1 |
 c. Retrospective reviews (including subgroup analysis) | 1 |
 d. Review/editorial | 0 |
 e. Case report | 0 |
2. Study objectives (selection score) | Â |
 a. Clear inclusion criteria |  |
  - Aim related to PCP prevalence or outcomes | 3 |
  - Related to OIs/general morbidity/respiratory disease but not specific to PCP | 2 |
  - Unrelated to clinical PCP prevalence | 1 |
 b. Unclear inclusion criteria | 1 |
3. Diagnosisa (quality of outcome ascertainment) | Â |
 a. Laboratory-confirmed (any specified method/specimen) | 2 |
 b. Clinical case definition (consistent with WHO guidelines) | 1 |
 c. Not specified | 0 |
4. Denominator | Â |
 a. Raw data denominator | 2 |
 b. Calculated denominator | 1 |
 c. No/unclear denominator/investigated < 20% of cohort for PCP/ exclusion group | 0 |
5. Numerator (PCP numbers) | Â |
 a. Raw data numerator | 2 |
 b. Calculated numerator | 1 |
 c. No/unclear numerator (clinical PCP not mentioned/tested) | 0 |
6. Assessment of bias (low, high or unclear risk) | Â |
 a. Attrition bias | |
  - Amount, nature or handling of incomplete outcome data | |
 b. Selection bias | |
  - Representativeness of the cases/cohort (clear reasons for and rates of non-inclusion) |