ALB and nutritional deficiency disease: Moreover, a high MCV was significantly associated with lower BMI (P < 0.0001), hemoglobin level (P < 0.0001), serum albumin value (P = 0.027), and Geriatric Nutritional Risk Index (GNRI) (P < 0.0001), suggesting that MCV could be a surrogate marker of malnutrition (Supplemental Table 2, http://links.lww.com/AOSO/A122, shows the associations).