From: Non-linear parameters of specific resistance loops to characterise obstructive airways diseases
Healthy | Asthma | COPD | p value (H vs. A) | p value (H vs. C) | p value (A vs. C) | |
---|---|---|---|---|---|---|
Roundness | 0.04 (0.03–0.07) | 0.07 (0.04–0.09) | 0.41 (0.17–0.58) | 0.7900 | <0.0001 | <0.0001 |
Area of Loop | 0.07 (0.05–0.10) | 0.12 (0.08–0.16) | 0.38 (0.21–0.51) | 0.9189 | <0.0001 | <0.0001 |
Asynchrony, msec | 10 (0–20) | 15 (0–33) | 70 (30–140) | 0.9064 | <0.0001 | <0.0001 |
Point X, ml | −29 (−67–−15) | −26 (−79–−6) | −128 (−318–−48) | 0.9999 | 0.0006 | 0.0005 |
Point Y, ml/sec | −243 (−470–−25) | −195 (−440–37) | −331 (−443–−209) | 0.9653 | 0.5014 | 0.5014 |
b 0 | 5.66 (3.78–7.43) | 5.77 (4.64–7.09) | 1.51 (0.84–3.27) | 0.9999 | <0.0001 | <0.0001 |
b 1 | −8.88 (−11.8–−5.0) | −8.57 (−11.5–−5.6) | −2.36 (−4.43–−0.17) | 0.8356 | <0.0001 | <0.0001 |
b 2 | 4.22 (2.39–5.21) | 3.19 (1.10–4.97) | 0.90 (−0.18–1.82) | 0.9999 | <0.0001 | <0.0001 |
SSG, 1/sec | 5.48 (4.62–6.21) | 5.18 (4.11–6.16) | 1.34 (0.62–2.61) | 0.9999 | <0.0001 | <0.0001 |
Pole1 | 0.94 (0.90–0.97) | 0.95 (0.89–0.97) | 0.91 (0.82–0.96) | 0.9999 | 0.4899 | 0.4068 |
Pole2 | 0.93 (0.80–0.96) | 0.92 (0.59–0.95) | 0.78 (0.53–0.91) | 0.6674 | 0.0241 | 0.7444 |
sGAW, 1/ kPa*sec | 1.32 (1.12–1.63) | 1.09 (0.92–1.45) | 0.40 (0.23–0.83) | 0.9635 | <0.0001 | <0.0001 |
sG0.5 , 1/ kPa*sec | 1.42 (1.15–1.57) | 1.33 (1.24–1.47) | 0.75 (0.49–1.14) | 0.9999 | <0.0001 | <0.0001 |