Summary of pooled findings on the quality of evidence on measurement properties of included PROMs in ILD, including CTD-associated ILD
| PROM | Internal consistency | Reliability | Measurement error | Construct validity | Responsiveness | Recommendation |
| D12 | +/high | +/moderate | x | ±/moderate | x | A |
| ERS-IPF-B | +/high | +/very low | x | ±/moderate | ?/moderate | A |
| FACIT-DS | x | x | x | x | x | x |
| KBILD-B | +/high | +/high | x | −/moderate | ±/moderate | A |
| MRC | x | x | x | ±/moderate | ±/moderate | B |
| NS | x | x | x | −/very low | x | B |
| OCD | x | x | x | ±/low | x | B |
| PROMIS-DS | x | +/low | x | x | x | B |
| UCSD-SOBQ | +/high | +/very low | +/very low | ±/moderate | ±/moderate | A |
| VAS-D | x | x | x | −/very low | ±/moderate | B |
Quality of evidence was categorised as high, moderate, low or very low. Overall rating of PROM quality categorised as sufficient (+), insufficient (−), inconsistent (±) or indeterminate (?). The symbol x indicates that the measurement property was not evaluated in the study. PROM: patient-reported outcome measure; ILD: interstitial lung disease; CTD: connective tissue disease; D12: Dyspnea 12 Questionnaire; ERS-IPF-B: EXACT-Respiratory Symptoms Idiopathic Pulmonary Hypertension breathlessness subscale; FACIT-DS: Functional Assessment of Chronic Illness Therapy-Dyspnea short form; KBILD-B: King's Brief Interstitial Lung Disease Health Status Questionnaire breathlessness and activities subscale; MRC: Medical Research Council dyspnoea scale; NS: New Dyspnea Scale; OCD: oxygen cost diagram; PROMIS-DS: Patient-Reported Outcomes Measurement Information System-Dyspnea Severity short form; UCSD-SOBQ: University of California San Diego Shortness of Breath Questionnaire; VAS-D: visual analogue scale-dyspnoea.