Table 2—

Days spent in hospital and admission rates before and after starting long-term oxygen therapy (LTOT) in two groups of hypoxaemic chronic obstructive pulmonary disease patients depending on compliance with hours spent with oxygen

VariableSubjects nBefore LTOTAfter LTOTRelative change# %p‐value
All256
 Days23.7±24.513.4±22.743.5<0.001
 Admission2.1±1.91.6±2.223.8<0.001
 Ever admitted %92.763.831.2<0.001
COT162
 Days23.1±23.914.2±25.738.5<0.001
 Admission2.2±1.91.6±2.027.3<0.001
 Ever admitted %946333.0<0.001
NCOT84
 Days24.9±25.711.9±15.352.6<0.001
 Admission2.0±1.71.7±2.615.00.28
 Ever admitted %896527.00.001
  • Data are presented as mean±sd unless otherwise stated

  • COT: continuous oxygen therapy (15–24 h·day−1)

  • NCOT: noncontinuous oxygen therapy (<15 h·day−1)

  • #: (preoxygen period-oxygen period)/preoxygen period