Clinical Implications of Oscillatory Lung Function during Methacholine Bronchoprovocation Testing of Preschool Children

Figure 2

Correlation of Z-scores with relative changes of reactance and resistance and SD-indexes of reactance and resistance based on 245 measurements at 5 Hz. At Z-score resistance of 2, relative change was 28.93% (a) and the SD-index was 3.03 (b). At Z-score reactance of 2, relative change was 114.37% (c), and the SD-index was 6.25 (d).

(a)

(b)

(c)

(d)