Simple cholecystectomy is an adequate treatment for grade I T1bN0M0 gallbladder carcinoma: Evidence from 528 patients

Table 3 General characteristics and survival data for 161 patients with grade I T1b gallbladder cancer

Characteristics	n = 161, n (%)	10-year survival
		OS, %	DSS, %
Age, yr
< 70	72 (41.7)	65.8	70.6
≥ 70	89 (58.3)	58.0	79.1
		P = 0.0221	P = 0.431
Gender
Male	49 (27.1)	54.6	72.6
Female	112 (72.9)	63.6	75.9
		P = 0.0301	P = 0.071
Histological type
Adenocarcinoma	116 (73.3)	62.8	76.2
Papillary	32 (15.0)	60.1	74.6
Other	13 (11.7)	46.2	60.6
		P = 0.799	P = 0.562
Surgery
SC	105 (65.5)	60.1	76.1
SC + LN	41 (24.8)	65.2	75.3
RC	15 (9.7)	56.6	67.0
		P = 0.734	P = 0.953

¹P < 0.05.

OS: Overall survival; DSS: Disease-specific survival; SC: Simple cholecystectomy; LN: Lymph node resection; RC: Radical cholecystectomy; N: Number.