Table 2.

Analgesic efficacy and postoperative adverse effects.

Items	G group (n = 20)	PR group (n = 20)	PRD group (n = 20)	P value
TFR1 (h)	2.6 ± 1.5	5.6 ± 2.0	24.1 ± 2.9	<0.05∗#$
Numbers of pressing analgesic pump	5.3 ± 0.2	3.2 ± 0.1	1.6 ± 0.2	<0.05∗#$
Total sufentanil dosage (μg)	142.2 ± 7.3	105.1 ± 5.7	78.2 ± 6.2	<0.05∗#$
Nausea	5(25%)	3(15%)	0	<0.05∗#$
Vomiting	2(10%)	1(5%)	0	<0.05∗#$

Values are mean ± SEM or n (%). TFR1, time from paravertebral injection to first analgesic request. P < 0.05, ^∗G group vs. PR group; ^#G group vs. PRD group; ^$PR group vs. PRD group.