Correlations of domain and total PC-QOL scores with cough measures, SF-12 component scores and PedsQL summary scores at initial (T1) and postinitial (T2) visits
| PC-QOL | ||||||||
| Psychological | Physical | Social | Total | |||||
| T1 | T2 | T1 | T2 | T1 | T2 | T1 | T2 | |
| Cough measures | ||||||||
| Cough count | −0.10 (0.521) | −0.28 (0.089) | −0.21 (0.188) | −0.46 (0.003) | −0.11 (0.487) | −0.51 (0.001) | −0.15 (0.329) | −0.42 (0.008) |
| Cough VCD | −0.36 (0.019) | −0.44 (0.004) | −0.60 (0.001) | −0.42 (0.006) | −0.42 (0.005) | −0.43 (0.005) | −0.49 (0.001) | −0.48 (0.001) |
| Cough VAS | −0.46 (0.003) | −0.59 (0.001) | −0.44 (0.004) | −0.60 (0.001) | −0.33 (0.033) | −0.62 (0.001) | −0.45 (0.003) | −0.67 (0.001) |
| SF-12 | ||||||||
| Physical | −0.17 (0.298) | −0.10 (0.553) | −0.08 (0.631) | −0.29 (0.073) | −0.08 (0.637) | −0.23 (0.156) | −0.17 (0.305) | −0.24 (0.149) |
| Mental | 0.31 (0.059) | 0.33 (0.038) | 0.23 (0.158) | 0.20 (0.224) | 0.27 (0.102) | 0.11 (0.515) | 0.30 (0.068) | 0.24 (0.147) |
| Total | 0.22 (0.171) | 0.33 (0.042) | 0.22 (0.188) | 0.32 (0.045) | 0.33 (0.038) | 0.22 (0.180) | 0.23 (0.163) | 0.33 (0.038) |
| PedsQL | ||||||||
| Psychosocial | 0.38 (0.078) | 0.21 (0.346) | 0.21 (0.349) | 0.31 (0.152) | 0.31 (0.162) | 0.41 (0.051) | 0.30 (0.170) | 0.33 (0.121) |
| Physical | 0.56 (0.007) | 0.39 (0.063) | 0.58 (0.005) | 0.45 (0.032) | 0.32 (0.153) | 0.62 (0.002) | 0.50 (0.019) | 0.48 (0.021) |
| Total | 0.49 (0.019) | 0.34 (0.108) | 0.40 (0.063) | 0.44 (0.036) | 0.34 (0.128) | 0.57 (0.004) | 0.43 (0.048) | 0.47 (0.024) |
Higher scores on PC-QOL reflect better quality of life; higher scores on cough severity represent greater interference with usual activities; higher scores on cough VAS represent greater trouble with the cough; higher scores on SF-12 reflect better health states; and higher scores on PedsQL reflect more positive functioning.
Numbers represent Spearman correlations with probability levels in parentheses.
PC-QOL, Parent Cough-Specific QOL questionnaire; PedsQL, Pediatric QOL Inventory 4.0; SF-12, Short Form Health Survey-12; VAS, verbal analogue scale; VCD, verbal category descriptive scale.