Effects of professional nursing intervention on compliance and adverse events in patients with depression combined with respiratory failure

Table 2 Comparison of the lung function and exercise endurance between the groups (mean ± SD)

Group	n	FVC (L)		FEV1 (L)		6MWD (minutes)
		Before	After	Before	After	Before	After
Control	80	2.50 ± 0.35	2.93 ± 0.30	1.28 ± 0.15	1.73 ± 0.23	355.65 ± 23.50	398.50 ± 20.50
Observation	80	2.48 ± 0.38	3.08 ± 0.28	1.26 ± 0.16	1.86 ± 0.26	360.10 ± 24.55	412.60 ± 19.65
t value		0.346	3.269	0.816	3.350	1.171	4.441
P value		0.730	0.001a	0.416	0.001a	0.243	0.000a

^aP < 0.05.

FVC: Forced vital capacity; FEV₁: Forced expiratory volume in the first second; 6MWD: 6-minute walk distance test.