Table 1.

Lung function changes in rats (x̅±s)

Group	n	TV (ml)	PEF (ml/s)	EF50 (ml/s)
Healthy control group	10	1.87±0.76	24.96±11.38	1.73±1.02
COPD model group	10	1.25±0.73*	18.49±3.24*	1.38±0.21*
Budesonide group	10	1.52±0.88†	19.62±10.25†	1.47±0.97†
Erythromycin group	10	1.68±0.54†	23.30±10.34†	1.61±0.54†
Erythromycin + budesonide group	10	1.72±0.97†	24.87±10.58†	1.68±0.40†

^*Compared with the healthy control group, P<0.05;

^†Compared with the COPD model group, P<0.05.