Intravenous iron supplementation may be superior to observation in acute isovolemic anemia after gastrectomy for cancer

Table 2 Hematologic laboratory data and morbidity before treatment n (%)

	Iron group	Observation group	P value1
	(n = 63)	(n = 60)
Hematologic laboratory data
Hemoglobin (g/dL) , mean ± SD	7.3 ± 1.0	8.4 ± 0.5	< 0.001
Hematocrit, mean ± SD	23.8 ± 3.3	26.4 ± 1.9	< 0.001
Mean MCV (fL), mean ± SD	85.1 ± 8.9	87.4 ± 7.8	0.130
Mean MCHC (g/dL), mean ± SD	31.0 ± 1.3	31.9 ± 1.4	< 0.001
Morbidity
Surgical	4 (6.3)	8 (13.3)	0.192
Non-surgical	8 (12.7)	3 (5.0)	0.135
Major	6 (9.5)	2 (3.3)	0.164
Minor	16 (25.4)	10 (16.7)	0.236
Adverse events	0 (0.0)	NA

¹Student’s t test, Pearson χ² test. MCV: Mean corpuscular volume; MCHC: Mean corpuscular hemoglobin concentration; NA: Not applicable.