Outcome after gastrectomy in gastric cancer patients with type 2 diabetes

Table 2 Univariate analysis [n = 403, n (%) or mean ± SD]

		Diabetes course				P value
		Worse	Same	Improvement	Resolution
Gender	Female	8 (8.6)	36 (38.7)	34 (36.6)	15 (16.1)	0.180
	Male	30 (10.3)	136 (46.6)	83 (28.4)	43 (14.7)
Age at OP (yr)		62.6 ± 7.6	64.2 ± 7.4	63.5 ± 7.4	62.5 ± 8.4	0.453
OP type	B-Ia	20 (12.4)	82 (50.9)	42 (26.1)	17 (10.6)	0.001
	B-IIa	10 (8.0)	59 (47.2)	42 (33.6)	14 (11.2)	0.006
	R-Y	8 (8.1)	31 (31.3)	33 (33.3)	27 (27.3)
Extent of gastrectomy	B-I and B-II (subtotal)	30 (10.5)	141 (49.3)	84 (29.4)	31 (10.8)	< 0.001
	R-Y (total)	8 (8.1)	31 (31.3)	33 (33.3)	27 (27.3)
Duodenal bypass	B-I (bypass -)	20 (12.4)	82 (50.9)	42 (26.1)	17 (10.6)	0.002
	B-II and R-Y (bypass +)	18 (8.0)	90 (40.2)	75 (33.5)	41 (18.3)
Pre-OP BMI (kg/m2)		23.4 ± 2.5	24.9 ± 2.6	24.8 ± 3.5	24.9 ± 3.5	0.127
Current BMI (kg/m2)		21.7 ± 2.7	22.7 ± 2.6	22.2 ± 3.2	21.2 ± 2.9	0.038
BMI reduction ratio1 (%)		6.8 ± 10.2	8.5 ± 7.3	10.4 ± 8.7	14.4 ± 8.5	< 0.001
Pre-OP diabetic	Oral diabetic agent	38 (10.8)	159 (45.3)	99 (28.2)	55 (15.7)	0.147
regimen	Insulin	0 (0.0)	13 (38.2)	18 (52.9)	3 (8.8)
F/U duration (mo)		36.4 ± 18.2	37.2 ± 21.6	30.0 ± 20.1	28.3 ± 17.8	0.001

^aP = 0.161, B-I vs B-II.

¹BMI reduction ratio (%) = -[(Current BMI - Pre-OP BMI)/Pre-OP BMI] × 100. OP: Operation; BMI: Body mass index; F/U: Follow up; B-I : Billroth I; B-II: Billroth II; R-Y: Roux-en-Y.