Table 2

Regions of significance and voting for a positive treatment effect in three uncontrolled studies on Bosentan in PAH based on the approach presented in this paper

Study
N
6MWD at Baseline
6MWD at week 16
correlation
region of significance
Vote of significance

Souza et al. 2005 [18]
15
396 ± 135
434 ± 137
r = 0.2
[0;337] & [672;∞]
Unlikely




r = 0.5
[0;300]
Unlikely




r = 0.8
-
Never

Provencher et al. 2006 [19]
99
322 ± 105
364 ± 109
r = 0.2
[0;347] & [410;∞]
Probably




r = 0.5
[0;367] & [481;∞]
Probably




r = 0.8
[0;448] & [1292;∞]
Most likely

Apostolopoulou et al. 2006 [20]
21
416 ± 105
459 ± 101
r = 0.2
[0;412] & [575;∞]
Unlikely




r = 0.5
[0;420] & [820;∞]
Unlikely




r = 0.8
[0;466]
Probably

(N- number of patients, 6MWT-6-minute walk distance, data before and after intervention is mean ± standard deviation, region of significance: only 6MWD values > 0 reported)

Ostermann et al. BMC Medical Research Methodology 2008 8:52   doi:10.1186/1471-2288-8-52