Table II.

Comparison of clinical symptoms between two groups before and after treatment/cases.

Item	Chest distress	Chest pain	Cough	Expectoration	Dyspnea
Study group (n=79)
Before treatment	69	73	77	72	65
After treatment	7	9	11	13	6
Improvement rate	78.5%	81.0%	83.5%	74.7%	74.7%
Control group (n=70)
Before treatment	63	68	70	67	60
After treatment	19	21	19	15	17
Improvement rate	62.9%a	67.1%a	72.9a	74.3%	61.4%a

^aP<0.05, compared with the study group.