Table 2.

Hours weaning and lengths of stay.

Variable	Mean	Std Dev
# hours weaning prior to transfer to VRU	9.7	7.3
Total duration of mechanical ventilation (days)	55.0	42.7
ICU LOS (days)	39.7	36.5
VRU LOS (days)	38.8	48.1
Total hospital LOS (days)	74.7	57.6

Note: ICU LOS and length of mechanical ventilation includes time at outside institutions; Total Hospital LOS includes the time only at Temple University Hospital.

Abbreviations: ICU, intensive care unit; LOS, length of stay; VRU, ventilator rehabilitation unit.