Table 4 Analysis of continuous outcome variables after IPTW and correction of variables with ASD > 0.1a.

From: A propensity score-adjusted analysis of efficacy of high-flow nasal oxygen during awake tracheal intubation

Outcome

Group

Mean % difference (standard error)

P-value

Lowest oxygen saturation

Conventional oxygenation

Reference

0.001

HFNO

1.742 (0.520)

Procedural durationb

Conventional oxygenation

Reference

0.111

HFNO

−3.026 (0.890)

  1. IPTW inverse probability treatment weighting, ASD absolute standardized difference, HFNO high-flow nasal oxygen.
  2. aVariables with ASD > 0.1 after IPTW included age, body mass index, emergency operation, pre-procedural airway bleeding, need for oxygen supplementation before entering the operating room, drugs used for awake tracheal intubation (glycopyrrolate, dexmedetomidine, propofol), trans-tracheal block, and intubation route.
  3. bTime from entry into the operating room to completion of awake tracheal intubation.
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