Comparison of concentrations of cytokines in BAL fluid obtained from the left and right sides using logarithmic transformed data
| Correlation | Bland-Altman analysis | |||||
|---|---|---|---|---|---|---|
| R | p value | Difference (95% CI) | LLA (95% CI) | ULA (95% CI) | ||
| IL-8 | 0.78 | <0.001 | 0.82 (0.66 to 1.02) | 0.12 (0.08 to 0.18) | 5.45 (3.72 to 8.00) | |
| IL-6 | 0.75 | <0.001 | 0.74 (0.58 to 0.94) | 0.09 (0.06 to 0.14) | 5.87 (3.84 to 8.98) | |
| TNFα | 0.64 | <0.001 | 0.93 (0.80 to 1.07) | 0.27 (0.21 to 0.35) | 3.16 (2.45 to 4.07) | |
Concentrations of cytokines were logarithmically transformed and analysed using Pearson's coefficient (R) and by the Bland Altman plots of agreement. The mean difference in cytokine concentration between the right and left sides together with the lower (LLA) and upper (ULA) limits of agreement with 95% confidence intervals are given.