Table 3 Rank correlation coefficients and the 95% limits of agreement between measurements of six inflammatory markers in induced and spontaneous sputum samples
From: Comparison of inflammatory markers in induced and spontaneous sputum in a cohort of COPD patients
Correlation coefficient* | Bland & Altmans 95% limit of agreement† | ||
|---|---|---|---|
Lower | Upper | ||
IL-6 (pg/ml) | 0.729 | 0.12 | 6.35 |
IL-8 (pg/ml) | 0.695 | 0.12 | 5.59 |
IP-10 (pg/ml) | 0.833 | 0.08 | 13.7 |
TNF-α (pg/ml) | 0.600 | 0.11 | 5.53 |
IL-18 (pg/ml) | 0.583 | 0.09 | 29.99 |
MIG (pg/ml) | 0.754 | 0.10 | 17.24 |