Table 2.

Comparison of VAS Scores at Rest and During Coughing Postoperatively

Measurement	Time	RISS (n=49)	Control Group (n=49)	T-value	P-Value
VAS score during coughing, mean ± SD	6 h	2.37 ± 0.57	3.90 ± 0.68	7.865	<0.001
	12 h	2.71 ± 0.65	4.45 ± 0.58	8.234	<0.001
	24 h	2.86 ± 0.74	4.43 ± 0.65	7.814	<0.001
	48 h	2.63 ± 0.73	4.49 ± 0.65	8.225	<0.001
	F	13.269	20.650
	P	P<0.001	P<0.001
	Intergroup effect	F=238.678	P<0.001
	Intra-group effect	F=26.598	P<0.001
	Intergroup * intra-group effect	F=3.943	P=0.011
VAS score at rest, mean ± SD	6 h	1.45 ± 0.50	2.80 ± 0.76	7.276	<0.001
	12 h	1.90 ± 0.65	3.43 ± 0.50	8.085	<0.001
	24 h	2.10 ± 0.71	3.57 ± 0.65	7.554	<0.001
	48h	1.98 ± 0.78	3.63 ± 0.67	7.609	<0.001
	F	21.727	22.371
	P	P<0.001	P<0.001
	Intergroup effect	F=43.725	P<0.001
	Intra-group effect	F=1.879	P<0.001
	Intergroup * intra-group effect	F=190.703	P=0.157