Instrument | Number of articles | Number of cohorts* | Average number of participants per cohort | Age, years (weighted mean†, (range of study means)) | Cohorts including majority hospitalised n (%) | Cohorts including high-severity illness n (%) | Cohorts measured >1 month after admission n (%) |
CAP specific | |||||||
CAP-Sym | 5 | 4 | 262 | 58.2 (51, 68) | 3 (75) | 4 (100) | 1 (25) |
CAP-BIQ | 1 | 1 | 500 | 64.2 | 0 (0) | 1 (100) | 1 (100) |
CAP Score | 5 | 2 | 453 | 71.7 (56.6, 74) | 2 (100) | 1 (50) | 1 (50) |
Metlay Score 1 | 3 | 3 | 322 | <60‡ (50, 64) | 1 (33) | 1 (33) | 3 (100) |
Metlay Score 2 | 1 | 1 | 126 | 52.7 | 0 (0) | 0 (0) | 0 (0) |
Respiratory specific | |||||||
LCQ | 1 | 1 | 44 | 77.0 | 1 (100) | 0§ (0) | 0 (0) |
MRC scale | 1 | 1 | 51 | 55.0 | 1 (100) | 0 (0) | 0 (0) |
Functional performance | |||||||
Barthel Index | 5 | 5 | 366 | 70.4§ (68, 79.1) | 5 (100) | 4§ (80) | 2 (40) |
Lawton ADL Index | 1 | 1 | 195 | 72.8 | 0 (0) | 0 (0) | 0 (0) |
Katz Index | 3 | 3 | 698 | 78.6 (56.7, 86) | 3 (100) | 3 (100) | 2 (66) |
ECOG | 1 | 1 | 968 | 72.7 | 1 (100) | 1 (100) | 0 (0) |
Generic | |||||||
SF-36 | 15 | 11 | 455 | 60.2 (44.2, 76) | 9 (82) | 6 (55) | 6 (55) |
SF-12 | 4 | 4 | 101 | 56.0 (50, 68.5) | 2 (50) | 1 (25) | 2 (50) |
SF-8 | 1 | 1 | 475 | 77.0 | 0 (0) | 0 (0) | 0 (0) |
EQ-5D | 5 | 4 | 469 | 69.7 (58, 76) | 4 (80) | 4 (80) | 3 (60) |
Sickness impact profile | 1 | 1 | 140 | 60.0 | 1 (100) | 0§ (0) | 1 (100) |
WHOQOL-BREF | 1 | 1 | 240 | 71.0 | 1 (100) | 1 (100) | 0 (0) |
Total | 42¶ | 33¶ | 74% | 61% | 48% |
*A cohort is defined as a group of study participants who may have contributed data to more than one article.
†The weighted mean was calculated by multiplying the mean age of a cohort by the proportion of participants that cohort contributed to the aggregate number of participants for a given instrument and then adding across all cohorts.
‡One study reported only the proportion of participants in different age categories, not overall mean or median, although 78% were aged <60 years.
§Not reported for one cohort (excluded from aggregate calculation for that variable).
¶Each article/cohort may apply more than one PROM, and hence column does not sum to total.
ADL, activities of daily living;CAP, community-acquired pneumonia;CAP-BIQ, CAP Burden of Illness Questionnaire;CAP-Sym, CAP Symptom Questionnaire;ECOG, Eastern Cooperative Oncology Group;EQ-5D, EuroQol-five dimension;LCQ, London Chest Questionnaire;MRC, Medical Research Council;PROM, patient-reported outcome measure;SF, short form;WHOQOL-BREF, WHO quality of life questionnaire short form.