Table 5.

Lung weight (g) calculated for the whole lung parenchyma as well as for each HU compartment (hyper-, normally, poorly and non-inflated)

	Weight (g)		Weight (%)
	Mean	SD	Mean	SD
Panel A
All patients
Total lung	966	303
Hyperinflated	114	76	12	10
Normally inflated	301	148	31	11
Poorly inflated	353	170	37	10
Non-inflated	198	150	20	13

	Weight (g)		Weight (%)
	Mean	SD	Mean	SD
Panel B
No-Steroids
Total lung	1123	328
Hyperinflated	122	66	11	7
Normally inflated	310	145	27	9
Poorly inflated	417	184	37	7
Non-inflated	291	151	25	11

	Weight (g)			Weight (%)
	Mean	SD	α = 0.05	Mean	SD	α = 0.05
Panel C
Steroids
Total lung	913	276	0.01*
Hyperinflated	108	80	0.57	12	11	0.93
Normally inflated	290	151	0.85	32	12	0.34
Poorly inflated	323	165	0.60	35	11	0.44
Non-inflated	192	152	0.01*	21	14	0.03

Panel A: whole study population (n = 60); Panel B: No-Steroids group (n = 17); Panel C: Steroids group (n = 43). Each HU compartment was reported as absolute values as well as percentage of the total lung parenchyma. Data were reported as mean ± standard deviation (SD). Wilcoxon rank-sum test was used to detect statistical differences (α = 0.05); *: to mark statistically significant differences