Table 2.

Mean caloric and protein requirements in ICU patients receiving enteral nutrition (EN) and enteral nutrition with parenteral nutrition (EN-PN) during ICU stay.

Days of ICU stay	Kcal/kg/day, mean ± SD				Proteins, g/kg/day, mean ± SD
	All patients (n = 443)	EN (n = 400)	EN-PN (n = 43)	P value	All patients (n = 443)	EN (n = 400)	EN-PN (n = 43)	P value
1	6.83 ± 4.71	6.86 ± 4.73	6.52 ± 4.55	0.65	0.36 ± 0.27	0.36 ± 0.27	0.36 ± 0.27	0.91
2	12.88 ± 6.88	12.97 ± 6.81	12.07 ± 7.56	0.42	0.68 ± 0.38	0.68 ± 0.38	0.64 ± 0.39	0.45
3	15.63 ± 15.44	15.56 ± 7.36	16.31 ± 8.23	0.53	0.82 ± 0.43	0.81 ± 0.43	0.89 ± 0.48	0.30
4	16.47 ± 7.37	16.54 ± 7.38	15.89 ± 7.28	0.59	0.87 ± 0.41	0.88 ± 0.42	0.85 ± 0.38	0.76
5	17.17 ± 7.35	17.11 ± 7.40	17.65 ± 7.08	0.66	0.91 ± 0.42	0.90 ± 0.42	0.91 ± 0.39	0.87
6	17.73 ± 7.51	17.61 ± 7.45	18.61 ± 7.98	0.44	0.95 ± 0.43	0.95 ± 0.43	0.98 ± 0.42	0.63
7	17.60 ± 7.81	17.72 ± 7.71	16.66 ± 8.66	0.46	0.95 ± 0.43	0.95 ± 0.42	0.95 ± 0.46	0.98
Mean 1st week	10.16 ± 4.44	10.11 ± 4.37	10.62 ± 5.09	0.47	0.73 ± 0.33	0.72 ± 0.33	0.79 ± 0.27	0.23
8	17.94 ± 7.62	18.13 ± 7.33	16.27 ± 9.74	0.22	0.95 ± 0.43	0.96 ± 0.43	0.89 ± 0.46	0.40
9	17.97 ± 7.61	18.20 ± 7.24	16.22 ± 10.03	0.20	0.97 ± 0.43	0.98 ± 0.43	0.89 ± 0.45	0.34
10	18.31 ± 8.00	18.44 ± 7.56	17.32 ± 11.04	0.51	0.98 ± 0.45	0.98 ± 0.43	0.90 ± 0.58	0.36
11	19.13 ± 7.32	19.36 ± 7.07	17.50 ± 8.95	0.24	1.02 ± 0.42	1.04 ± 0.40	0.87 ± 0.51	0.06
12	19.50 ± 7.12	19.53 ± 7.25	19.28 ± 6.15	0.88	1.03 ± 0.42	1.04 ± 0.43	1.01 ± 0.35	0.79
13	19.74 ± 6.75	19.75 ± 6.76	19.69 ± 6.82	0.97	1.03 ± 0.45	1.03 ± 0.44	1.04 ± 0.46	0.93
14	20.53 ± 6.83	20.50 ± 6.67	20.87 ± 8.60	0.87	1.06 ± 0.43	1.05 ± 0.43	1.10 ± 0.41	0.71
Mean 2nd week	14.59 ± 5.58	14.50 ± 5.60	15.46 ± 5.31	0.28	0.77 ± 0.34	0.76 ± 0.34	0.83 ± 0.28	0.24

P significant value is written in bold.