Table 4. Concurrent validity.
| Leicester Cough Questionnaire | |||
|---|---|---|---|
| Physical | Psychological | Social | |
| SF-36 Role-Physical index | .424** | .315** | .374** |
| SF-36 Physical Functioning index | .579** | .466** | .507** |
| SF-36 Bodily Pain index | .429** | .264** | .288** |
| SF-36 General Health Perceptions index | .487** | .412** | .423** |
| SF-36 Vitality index | .475** | .338** | .352** |
| SF-36 Social Functioning index | .435** | .375** | .388** |
| SF-36 Role-Emotional index | .240** | .220** | .243** |
| SF-36 Mental Health index | .254** | .172* | .193** |
| SF-36 Standardized Physical Health index | .560** | .403** | .439** |
| SF-36 Standardized Mental Health index | .218** | .198** | .216** |
| Borg scale | -.538** | -.520** | -.554** |
| VAS Dyspnoea | -.572** | -.533** | -.529** |
Notes: Pearson’s correlations,
*p<0.05,
**p<0.01,
***p<0.001. Interpretation guide: LCQ scales: high values = low burden, SF-36 scales: high values = high manifestation of related dimensions’ content, Borg scale: high values = high dyspnoea, VAS Dyspnoea: high values = high dyspnoea.