2.1. Analysis.

Comparison 2 SUBGROUP ANALYSES: mean baseline kPa/PaO2 & high dose versus low dose studies), Outcome 1 MEAN BASELINE PAO2 </> 7.3kPa/55mmHG: Endurance test ‐ exercise distance.

Comparison 2 SUBGROUP ANALYSES: mean baseline kPa/PaO2 & high dose versus low dose studies), Outcome 1 MEAN BASELINE PAO2 </> 7.3kPa/55mmHG: Endurance test ‐ exercise distance.