Table 2.

A summary of lung function, gas exchange, DLCO% and 6MWD of five RCTs on the 3^rd, 6^th, 12^th postoperative month

Variables	Postoperative follow-up (month)	No of RCTs	No of total patients	GroupA/B	WMD95%CI	p-value
	3	2[12,16]	80	39/41	0.23(0.08,0.37)	0.002
FEV1	6	3[2,17,19]	180	89/91	0.32(0.23,0.41)	<0.00001
	12	3[2,17,19]	169	65/64	0.28(0.20,0.36)	<0.00001
	3	2[12,16]	80	39/41	11.31(6.29,15.69)	<0.00001
FEV1%	6	3[2,17,19]	180	89/91	10.16(7.42,12.89)	<0.00001
	12	3[2,17,19]	167	85/82	7.65(4.97,10.33)	<0.00001
	3	2[12,16]	80	39/41	-54.44(-75.23, -33.85)	<0.00001
RV%	6	3[2,17,19]	170	87/83	- 54.09( - 64.66, -43.52)	<0.00001
	12	3[2,17,19]	166	86/80	- 53.42( - 63.74, -43.10)	<0.00001
TLC%	3	2[12,16]	80	39/41	- 21.70( - 30.98, -12.42)	<0.00001
	6	2[2,19]	115	59/56	- 15.73( - 22.44, -9.02)	<0.00001
	12	3[2,17,19]	120	59/61	- 16.24( - 23.07, -9.41)	<0.00001
DLCO%	6	2[17,19]	105	52/53	0.01(-0.25,0.27)	0.95
	12	2[17,19]	96	51/45	0.01(-0.25,0.27)	0.25
Pa02	6	2[17,19]	136	67/6	9.98(9.65,10.13)	<0.00001
	12	2[2,17]	114	60/54	6.37(6.10,6.64)	<0.00001
PaC02	6	4[2,11,17,21]	229	108/121	- 1.54(- 1.72, - 1.36)	<0.00001
	12	2[2,17]	114	60/54	-2.00(-2.23, -1.77)	<0.00001
	3	2[12,16]	80	39/41	10.5(-16.30,37.38)	0.44
6MWD	6	5[2,11,17,19 ,21]	274	129/145	68.34(36.58,100.09)	<0.00001
	12	3[2,17,19]	168	85/83	76.92(60.87,92.98)	<0.00001