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Table 2 Outcomes according to hemoglobin concentration

From: Anemia and blood transfusion in a surgical intensive care unit

 

Mortality rates

(%)

Length of stay, days

median (IQR)

 

ICU

Hospital

ICU LOS

Hospital LOS

Admission hemoglobin concentration

†

†

†

†

   < 7 g/dl (n = 1109)

120 (10.8)

171 (15.4)

2 (1-5)

12 (9-21)

   7-9 g/dl (n = 1748)

114 (6.5)*

196 (11.2)**

2 (1-4)

13 (10-19)

   9-11 g/dl (n = 2021)

85 (4.2)*

158 (6.8)*

1(1-3)*

12 (9-19)

   >11 g/dl (n = 1047)

42 (4.0)*

76 (7.3)*

1(1-3)*

11 (7-16)*

Lowest hemoglobin concentration

†

†

†

†

   < 7 g/dl (n = 1483)

189 (12.7)

259 (17.5)

3(1-9)

14 (10-25)

   7-9 g/dl (n = 1928)

104 (5.4)*

200 (10.4)*

2 (1-5)*

13 (10-20)*

   9-11 g/dl (n = 1693)

45 (2.7)*

99 (5.8)*

1 (1-2)*

11 (8-16)*

   >11 g/dl (n = 821)

23 (2.8)*

43 (5.2)*

1 (1-1)*

10 (7-14)*

  1. Statistics were performed for columns between categories for initial or minimum hemoglobin concentrations, respectively.
  2. † P < 0.001 between groups; * P < 0.001 vs < 7 g/dl; ** P < 0.05 vs 7 g/dl. IQR, interquartile range; LOS, length of stay.