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Table 4 Relationship between energy and protein deficit and length of mechanical ventilation and time to discharge alive

From: Nutrition support practices in critically ill head-injured patients: a global perspective

Variable Time until discharged alive from ICU (days) Time until discharged alive from hospital (days) Length of mechanical ventilation (days)
Hazard ratio (95 % CI) p Hazard ratio (95 % CI) p Hazard ratio (95 % CI) P
All patients   n = 1027 energy, 1026 protein n = 1027 energy, 1026 protein n = 896
Energy deficit (kcal/day) 1.04 (1.02, 1.05) <0.001 1.03 (1.01, 1.04) 0.002 1.07 (1.05, 1.08) <0.001
OR is per 100 kcal/day
Protein deficit (g/day) 1.02 (1.01, 1.04) 0.001 1.02 (1.002, 1.03) 0.024 1.05 (1.03, 1.06) <0.001
OR is per 5 g/day
Patients who stayed at least 8 days   n = 816 n = 816 n = 732
Energy deficit (kcal/day) 1.01 (0.99, 1.02) 0.948 1.02 (1.01, 1.04) 0.001 1.02 (1.01, 1.04) 0.004
OR is per 100 kcal/day
Protein deficit (g/day) 0.99 (0.98, 1.01) 0.275 1.01 (0.99, 1.03) 0.316 1.01 (0.996, 1.03) 0.161
OR is per 5 g/day
  1. Adjusted for age, sex, region, Acute Physiology and Chronic Health Evaluation II score, body mass index category, admission category, and clustering of patients within ICUs. OR odds ratio