Table 2.

Comparison with Rates of Pneumothorax in Prospective Studies

Study	Country of study	Number/treatments	Incidence rate (%)
He et al. 20121	China	307/1,500,000,000	0.0002
Yamashita et al. 199941	Japan	0/65,482	0
Yamashita et al. 200042	Japan	0/1441	0
Park et al. 201043	Korea	0/3071	0
MacPherson et al. 2001+200144,45	U.K.	0/34,407	0
White et al. 200146	U.K.	0/31,822	0
Witt et al.	Germany	2/2,200,000 (treatments)	0.00009
201147		2/229,230 (patients)	0.0009
Melchart	Germany	2/>760,000 (treatments)	0.00026
et al. 200450		2/97,733	0.002