Development of an Open-Heart Intraoperative Risk Scoring Model for Predicting a Prolonged Intensive Care Unit Stay

Table 6

Mean ICU stay for each OHIR score for the patients in this study.

OHIR score	Number of patients	Mean (hours)	SD
0	28	28.62	17.37
1	31	29.69	15.82
2	37	38.50	22.88
3	34	62.62	48.52
4	23	71.37	61.07
5	9	128.22	68.71
6	4	51.75	21.87
7	2	102.50	17.68

ICU: intensive care unit; OHIR: Open-Heart Intraoperative Risk; SD: standard deviation.