Inhaled iloprost for the control of pulmonary hypertension.

However, the group-adjusted difference of 26 m was achieved with only a marginal significance of p =0.051. 34% of the patients in the iloprost group improved in functional class versus 6% on placebo (p =0.002).

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The increase of the 6MWD between the two groups did not reach statistical significance, but the improvement in functional class was significantly more frequent in the iloprost group (p =0.03).

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