Table 4. Pearson correlation coefficients between SF-36 scores and clinical and spirometric parameters [r (P value)].
| Age, yrs | Yrs since diagnosis | Yrs since last exposure | Severity score | FEV1, % pred | FEV1/FVC | PC20 | BRI | |
| Physical functioning | 0.324(0.831) | −0.240 (0.152) | −0.174 (0.246) | −0.318 (0.031) | 0.367 (0.012) | −0.091 (0.548) | 0.265 (0.086) | −0.269 (0.070) |
| Physical health | 0.004 (0.980) | −0.194 (0.249) | −0.082 (0.590) | −0.099 (0.515) | 0.183 (0.225) | 0.296 (0.046) | 0.209 (0.164) | −0.176 (0.242) |
| Emotional problem | 0.106 (0.485) | −0.042 (0.805) | −0.103 (0.495) | −0.197 (0.190) | 0.272 (0.067) | 0.182 (0.223) | 0.227 (0.129) | −0.175 (0.243) |
| Energy/fatigue | −0.171 (0.256) | −0.265 (0.133) | −0.102 (0.501) | −0.121 (0.423) | 0.209 (0.163) | −0.100 (0.511) | −0.013 (0.930) | 0.020 (0.894) |
| Emotional well-being | −0.134 (0.345) | −0.018 (0.915) | 0.072 (0.633) | −0.018 (0.908) | 0.022 (0.885) | 0.160 (0.289) | 0.073 (0.628) | 0.007 (0.961) |
| Social functioning | −0.289 (0.052) | 0.271 (0.105) | −0.233 (0.119) | 0.124 (0.410) | −0.085 (0.576) | −0.354 (0.016) | −0.152 (0.309) | 0.236 (0.115) |
| Bodily pain | −0.064 (0.671) | 0.033 (0.847) | −0.151 (0.318) | −0.379 (0.009) | 0.209 (0.163) | 0.312 (0.035) | 0.398 (0.006) | −0.351 (0.017) |
| General health | −0.177(0.240) | −0.001 (0.996) | 0.072 (0.633) | −0.464 (0.001) | 0.318 (0.031) | 0.354 (0.016) | 0.400 (0.006) | −0.420 (0.004) |
| SF 36 total score | −0.020 (0.894) | −0.147 (0.387) | −0.156 (0.301) | −0.308 (0.038) | 0.344 (0.019) | 0.244 (0.102) | 0.335 (0.023) | −0.285 (0.055) |