Table 2.

Results from mixed-effect regression models of the influence of ARDS on the patients with H7N9 infection.

Parameter	FEV1		FVC		FEV1/FVC		DLCO
	Est.	p	Est.	p	Est.	p	Est.	p
Main effects
ARDS		<0.01		<0.01		<0.01		0.0233
Visit		<0.01		<0.01		0.0501		<0.01
Interaction		0.045		0.14		0.1893		0.8336
ARDS*Visit
Change = 1-month Follow-up
No ARDS
3 months	4.2745	0.8828	6.68851	0.3166	−3.5196	0.9643	5.9225	0.9887
6 months	8.6847	0.0759	10.7811	0.0059	−5.2527	0.7125	24.2705	<0.01
12 months	12.047	<0.01	14.4027	<0.001	−3.8862	0.9377	14.3968	0.1137
24 months	7.3071	0.5886	12.3483	0.0218	−7.1335	0.6221	18.906	0.0667
ARDS
3 months	10.541	0.0133	12.479	<0.01	−11.6019	<0.01	28.2033	0.0359
6 months	16.282	<0.01	17.5496	<0.01	−7.2176	0.3481	27.0797	<0.01
12 months	17.801	<0.01	18.5572	<0.01	−10.3128	0.0205	26.4752	<0.01
24 months	20.635	<0.01	23.0783	<0.01	−16.1209	<0.01	29.4434	0.0134

ARDS: acute respiratory distress syndrome; FEV1: forced expiratory volume in one second; FVC: forced vital capacity; FEV1/FVC: the ratio of forced expiratory volume in one second to forced vital capacity; DLCO: carbon monoxide diffusion capacity; est: estimated.