Table 3.

Multivariate analysis of length of stay

Prognostic variable	ß	SE of ß	P
Duration of surgery	0.062	0.021	0.004
BMI	0.010	0.006	0.072
Mean postoperative glucose	0.024	0.018	0.195
History of cardiac valve disease or arrhythmia	0.058	0.091	0.527
Transhiatal procedure	0.034	0.065	0.599

BMI, body mass index; SE, standard error.