Table 4. Comparison of clinical variables and outcome variables for the single-incision group after propensity-score matching (n=29).

Characteristics	Outcome variables (mean ± σ)												Total, n (%)
	Lymph node retrieved, no.	P value	Blood loss, mL	P value	Hospital stay, day	P value	Length of wound, cm	P value	Operation time, min	P value	Complication	P value
Sex		0.843		0.028*		0.874		0.229		0.410		0.580
Female	19.29±11.22		73.40±98.83		6.20±2.36		3.64±0.74		3.42±1.05		0.14±0.35		25 (86.21)
Male	20.50±10.66		22.50±18.93		6.00±2.00		4.12±0.63		3.87±0.63		0.25±0.50		4 (13.79)
Age, y		0.096		0.315		0.286		0.469		0.952		0.930
<65	21.84±10.33		49.00±41.66		5.75±1.41		3.77±0.82		3.47±1.01		0.15±0.37		20 (68.97)
≥65	14.44±11.10		105.00±154.90		7.11±3.48		3.56±0.53		3.50±1.06		0.17±0.41		9 (31.03)
Stage I cancer		0.233		0.212		0.277		0.711		0.657		0.376
Yes	17.13±8.34		84.69±121.40		5.75±2.11		3.66±0.47		3.41±1.17		0.21±0.43		16 (55.17)
No	22.15±13.21		43.85±30.97		6.69±2.46		3.77±0.99		3.58±0.79		0.08±0.29		13 (44.83)
Antecedent of DM		0.605		0.354		0.674		0.041*		0.741		0.171
Yes	15.50±13.43		50.00±0.00		5.50±2.12		4.00±0.00		3.25±1.06		0.50±0.71		2 (6.90)
No	19.77±11.01		67.59±96.85		6.22±2.33		3.69±0.76		3.50±1.02		0.12±0.34		27 (93.10)
Antecedent of TB*
Yes	–		–		–		–		–		–		0 (0.00)
No	–		–		–		–		–		–		29 (100.00)

Standard deviations are reported in parentheses. *, the data was not applicable for analysis due to no patient with antecedent TB infection.