Table 3.

Mortality at 30 days in patients with ARDS according to tomographic lung damage.

Survival pairwise comparisons Breslow (Generalized Wilcoxon)
ARDS Classification	Pulmonary damage severity index	mild		moderate		severe
		Chi-Square	Sig.	Chi-Square	Sig.	Chi-Square	Sig.
No ARDS	mild			1.690	.194	1.628	.202
	moderate	1.690	.194			.008	.930
	severe	1.628	.202	.008	.930
Mild ARDS	mild			2.030	.154	1.418	.234
	moderate	2.030	.154			.459	.498
	severe	1.418	.234	.459	.498
Moderate ARDS	mild			2.439	.118	7.000	.008
	moderate	2.439	.118			.007	.934
	severe	7.000	.008	.007	.934
Severe ARDS	moderate					3.490	.062
	severe			3.490	.062

ARDS: acute respiratory distress syndrome.