Table 1

Characteristics of D1, D2, D3 population (n = 567)

Characteristics

D1 surgery (n = 187)

D2 surgery (n = 189)

D3 surgery (n = 191)

p Value


Age (years)

0.899

Median

55

55

54

Sex(%)

0.758

Men

136(73)

137(73)

133(70)

Women

51(27)

52(27)

58(30)

Number of lymph nodes removed

0.189

Mean

21

23

26

Number of involved lymph nodes

0.232

Mean

3

4

6

Tumor size(%)

0.323

≤5 cm

125(67)

121(64)

113(59)

5-7 cm

32(17)

40(21)

50(26)

>7 cm

30(16)

28(15)

28(15)

Site of tumour(%)

0.984

Upper stomach

44(24)

39(21)

42(22)

Middle stomach

43(23)

50(27)

45(24)

Lower stomach

88(47)

87(46)

90(47)

Whole stomach

12(6)

13(6)

14(7)

Pathological tumour stage(%)

0.979

T1

41(22)

40(21)

44(23)

T2

44(24)

45(24)

42(22)

T3

89(48)

87(46)

92(48)

T4

13(6)

17(9)

13(7)

Clinical node status(%)

0.729

Positive

182(97)

186(98)

186(97)

Negative

5(3)

3(2)

5(3)

Pathological nodal stage(%)*

N0

69(37)

60(32)

69(36)

0.500

N1

75(40)

93(49)

81(42)

N2

30(16)

26(14)

24(13)

N3

13(7)

10(5)

17(9)

Gross type(%)

0.998

Borrmann I

58(31)

56(30)

54(28)

Borrmann II

41(22)

44(23)

43(23)

Borrmann III

73(39)

74(39)

77(40)

Borrmann IV

15(8)

15(8)

17(9)

Histological type(%)

0.867

Differentiated

99(53)

88(47)

82(43)

Undifferentiated

88(47)

101(53)

109(57)

Curative resection(%)

174(93)

181(96)

181(95)

0.503

Type of gastrectomy(%)

0.440

Total

22(12)

21(11)

29(15)

Subtotal

165(88)

168(89)

162(85)

Combined organ resection

0.283

Pancreas or spleen

7(4)

16(9)

14(7)

Liver or gall

11(6)

8(4)

9(5)

Transverse colon

9(5)

17(9)

11(6)

Blood transfusion(%)

100(54)

104(55)

111(58)

0.652


*N1 = 1-6 involved nodes; N2 = 7-15 involved nodes; N3, >15 involved nodes.

Zhang et al. BMC Cancer 2010 10:308   doi:10.1186/1471-2407-10-308

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