Table 1 Patient selections

Group	Before matching			After matching
Group	n	Percent	Median time and range of extubation	n	Percent	Median time and range of extubation
OR extubation group	112	25.6	/	94	38.8	/
ICU extubation group	326	74.4	12 (8 ~ 19)	148	61.2	11 (8 ~ 18) h
Extubation in ICU (within 24h)	273	83.7	11 (8 ~14)	133	89.9	11 (7-14) h
Extubation in ICU (> 24h)	53	16.3	39 (32 ~ 54)	15	10.1	33 (30-48) h

Data are presented as median (interquartile range), or a number of patients (percentage), respectively
OR Operating room, ICU Intensive care unit

ISSN: 1471-2253