TABLE 2.

The difference between the intervention and controls group in demographics and pre-procedural status

		Controls (n=55)	Intervention (n=55)	P
Age (year)		59.6±7.4	61.6±9.2	NS
Sex (%)	ManH	34 (61.8)	37 (67.2)	NS
Amount of effusion (degree) (%)	Moderate	17 (30.9)	13 (23.6)	NS
	Severe	38 (69)	42 (76.3)	NS
MRC dyspnea score (pre) (%)	MRC IV	41 (74.5)	43 (78.1)	NS
	MRC V	14 (25.4)	12 (21.8)
Pleuritic chest pain (pre) (%)	Yes	16 (29.1)	17 (30.9)	NS
Oxygen saturation% (pre)		93.9±3.8	94.1±2.4	NS

NS not significant.