Comparison of average test-duration until different PD-levels reached | |||||
Number | Mean | SD | Lower 95%CL | Upper 95%CL | |
PD40 sGeff | 484 | 14:45 | 05:54 | 14:15 | 15:14 |
PD20 FEV1 | 484 | 17:46 | 05:16 | 17:18 | 18:14 |
PD20 FEF50 | 484 | 16:17 | 05.36 | 15:47 | 16:47 |
Test-duration: sGeff < FEV1; sGeff < FEF50; FEF50 < FEV1 (p<0.001) | |||||
Provocation-doses of methacholine (mg) needed to reach the different PD levels | |||||
PD40 sGeff | |||||
AHR | 409 | .495 | .491 | .447 | .543 |
No AHR | 75 | 2.185 | .059 | 2.17 | 2.197 |
PD20 FEV1 | |||||
AHR | 176 | .739 | .615 | .647 | .830 |
No AHR | 243 | 2.189 | .044 | 2.183 | 2.194 |
PD-level not reached | 65 | .873 | .450 | .761 | .985 |
PD20 FEF50 | |||||
AHR | 307 | .625 | .588 | .559 | .691 |
No AHR | 146 | 2.188 | .046 | 2.180 | 2.195 |
PD-level not reached | 31 | .936 | .496 | .754 | 1.117 |
Comparison between the 3 test procedures assessed by summary independent sample t-test | |||||
mean diff. | SE | t | Significance | ||
PD40 sGeff versus PD20 FEV1 | .244 | .048 | 5.088 | p<.000 | |
PD40 sGeff versus PD20 FEF50 | .130 | .040 | 3.223 | p=.001 | |
PD20 FEV1 versus PD20 FEF50 | .114 | .056 | 2.011 | p=.045 |