Outcome variable | Explanatory variable(s) | Levels |
---|---|---|
DAH90 | Treatment group | SOT [reference group], HFNT |
DAH30 | Treatment group | SOT [reference group], HFNT |
DAH90 | Treatment group ARISCAT risk category EUROSCORE II Gender COPD Asthma Obesity Current smoker Lower respiratory tract infection in last 4 weeks Age First time or re-do surgery Country | SOT [reference group], HFNT Low [reference group], intermediate, high - Female [reference group], Male No [reference group], Yes No [reference group], Yes No [reference group], Yes No [reference group], Yes No [reference group], Yes - First time [reference group], Re-do UK [reference group], Australia, New Zealand |