Table 1.

Demographics comparison of study groups

Characteristics	PCPA (n=30)	IVPCA (n=30)	P-value
Age (years)	50.9±11.3	49.25±9.26	0.5386
Sex (M/F)	23/7 (76.6%/23.4%)	18/12 (60%/40%)
Weight (kg)	56.68±9.78	52.13±6.2	0.0356
Height (cm)	163.64±7.73	162.18±7.82	0.47
Operation time (min)	175.36±42.39	189.64±18.92	0.0974
Duration of chest tubes (days)	5.46±1.35	6.16±1.26	0.043
Postoperative hospital stay (days)	13.43±6.96	15.06±8.27	0.411

Notes: Results are presented as mean ± SD, or as % of group total.

Abbreviations: IVPCA, intravenous patient-controlled analgesia; M/F, male/female; PCPA, patient-controlled paravertebral analgesia.