Acta Orthopaedica 2012; 83 (1): 31–35 Gruson K I, Aharonoff G B, Egol K A, Zuckerman J D, Koval K J. The rela- tionship between admission hemoglobin level and outcome after hip frac- ture. J Orthop Trauma 2002; 16 (1): 39-44. Haentjens P, Magaziner J, Colón-Emeric C S, Vanderschueren D, Milisen K, Velkeniers B, Boonen S. Meta-analysis: excess mortality after hip fracture among older women and men. Ann Intern Med 2010; 152 (6): 380-90. Halm E A, Wang J J, Boockvar K, Penrod J, Silberzweig S B, Magaziner J, Koval K J, Siu A L. The effect of perioperative anemia on clinical and functional outcomes in patients with hip fracture. J Orthop Trauma 2004; 18 (6): 369-74. Ho C A, Li C Y, Hsieh K S, Chen H F. Factors determining the 1-year survival after operated hip fracture: a hospital-based analysis. J Orthop Sci 2010; 15 (1): 30-7. Juliebø V, Krogseth M, Skovlund E, Engedal K, Wyller T B. Medical treat- ment predicts mortality after hip fracture. J Gerontol A Biol Sci Med Sci 2010; 65 (4): 442-9. Koval K J, Maurer S G, Su E T, Aharonoff G B, Zuckerman J D. The effects of nutritional status on outcome after hip fracture. J Orthop Trauma 1999; 13 (3): 164-9. Lewis J R, Hassan S K, Wenn R T, Moran C G. Mortality and serum urea and electrolytes on admission for hip fracture patients. Injury 2006; 37 (8): 698-704. 35 O’Daly B J, Walsh J C, Quinlan J F, Falk G A, Stapleton R, Quinlan W R, O’Rourke S K. Serum albumin and total lymphocyte count as predictors of outcome in hip fractures. Clin Nutr 2010; 29 (1): 89-93. Oztürk A, Ozkan Y, Akgöz S, Yalçýn N, Ozdemir R M, Aykut S. The risk factors for mortality in elderly patients with hip fractures: postoperative one-year results. Singapore Med J 2010; 51 (2): 137-43. Petersen M B, Jørgensen H L, Hansen K, Duus B R. Factors affecting post- operative mortality of patients with displaced femoral neck fracture. Injury 2006; 37 (8): 705-11. Pimlott B J, Jones C A, Beaupre L A, Johnston D W, Majumdar S R. Prog- nostic impact of pre-operative albumin on short-term mortality and com- plications in patients with hip fracture. Arch Gerontol Geriatr 2011; 53 (1): 90-4. Pioli G, Barone A, Giusti A, Oliveri M, Pizzonia M, Razzano M, Palummeri E. Predictors of mortality after hip fracture: results from 1-year follow-up. Aging Clin Exp Res 2006; 18 (5): 381-7. Singh Mangat K, Mehra A, Yunas I, Nightingale P, Porter K. Is estimated peri- operative glomerular filtration rate associated with post-operative mortality in fractured neck of femur patients? Injury 2008; 39 (10): 1141-6.