Table 2. Postoperative parameters for pain evaluation of the study patients.

Parameters	Before PSM				After PSM
	ICC	No ICC	P value		ICC	No ICC	P value
Post operation day 0 pain score	2.08±1.66	3.78±1.91	<0.001		2.08±1.66	3.98±2.03	<0.001
Post operation day 1 pain score	1.46±1.01	2.41±1.81	<0.001		1.46±1.01	2.64±1.01	<0.001
Post operation day 2 pain score	1.11±0.92	1.25±1.07	0.408		1.11±0.92	1.55±1.10	0.038
Post operation day 3 pain score	0.70±0.75	0.87±0.98	0.279		0.70±0.75	1.23±0.92	0.007
Drainage duration	3.12±1.72	3.83±2.81	0.099		3.12±1.72	4.40±3.40	0.02
Post operation hospital stay	4.32±1.76	5.04±3.27	0.143		4.32±1.76	5.46±3.49	0.042
Discharge day pain score	0.44±0.64	0.38±0.75	0.656		0.44±0.64	0.40±0.75	0.776
IV form morphine use frequency	0.50±0.64	1.0±1.59	0.003		0.50±0.64	1.20±1.35	0.002
IV form morphine use dosage (mg)	3.04±3.88	5.85±8.94	0.004		3.04±3.88	7.14±8.49	0.003

ICC, intercostal catheter; PSM, propensity score matching.