Table 1. Description of the study population.

	≥ 75 years (n = 85)	< 75 years (n = 266)	p
Women	37 (43.5)	72 (27.1)	0.007
Malnutrition	9 (13)	11 (5.6)	0.083
Diabetes mellitus	13 (18.6)	41 (20)	0.932
Alcohol abuse	1 (1.5)	30 (14.8)	0.007
Smokers	11 (16.2)	108 (48.2)	<0.001
Cirrhosis	0 (0)	8 (4.1)	0.206
Neoplasm	22 (33.8)	38 (19)	0.021
Central venous catheter	3 (4.4)	13 (6.8)	0.769
Renal insufficiency	1 (1.6)	4 (2.1)	1
Respiratory insufficiency	2 (3.1)	7 (3.5)	1
Immunocompromised host	5 (7.4)	11 (5.6)	0.567
Chronic inflammatory disease	6 (9.1)	2(1)	0.004
Randomized in 12-weeks arm	40 (47.1)	135 (50.8)	0.640

Numbers in brackets are the percentages of the sub-group populations. Bolded p-values are considered to be significant as they are lower than 0.05.