Table 4 Subgroup and interaction analyses of the association between the TyG-WWI index and stroke incidence.

Gender

 Female

1(Ref.)

1.44 (0.99, 2.09)

1.3 (0.9, 1.87)

1.5 (1.02, 2.19)

 (Case/Total)

42/786

86/1034

114/1324

194/1636

 Male

1(Ref.)

1.28 (0.96, 1.7)

1.46 (1.08, 1.98)

1.4 (0.99, 1.99)

 (Case/Total)

91/1473

111/1190

111/900

82/588

Age

 45–60

1(Ref.)

1.35 (0.98, 1.86)

1.36 (0.97, 1.9)

1.56 (1.07, 2.27)

 (Case/Total)

72/1432

90/1268

96/1194

103/985

 ≥ 60

1(Ref.)

1.38 (1, 1.9)

1.4 (1.02, 1.93)

1.4 (0.99, 1.97)

 (Case/Total)

61/791

107/956

129/1030

173/1239

BMI

 < 24

1(Ref.)

1.34 (1.01, 1.76)

1.31 (0.97, 1.78)

1.3 (0.92, 1.84)

 (Case/Total)

98/1776

121/1478

100/1125

92/894

 24–28

1(Ref.)

1.38 (0.86, 2.21)

1.37 (0.87, 2.18)

1.53 (0.93, 2.5)

 (Case/Total)

25/348

61/598

87/809

106/834

 ≥ 28

1(Ref.)

0.92 (0.41, 2.06)

1.2 (0.59, 2.43)

1.28 (0.63, 2.6)

 (Case/Total)

10/99

15/148

38/290

78/496

Residence

 Rural

1(Ref.)

1.59 (1.21, 2.09)

1.6 (1.21, 2.13)

1.53 (1.11, 2.1)

 (Case/Total)

87/1546

143/1483

154/1451

160/1351

 Urban

1(Ref.)

0.99 (0.66, 1.47)

1.09 (0.74, 1.63)

1.39 (0.92, 2.1)

 (Case/Total)

46/677

54/741

71/773

116/873

Marital status

 Marred

1(Ref.)

1.4 (1.1, 1.78)

1.51 (1.18, 1.93)

1.54 (1.17, 2.02)

 (Case/Total)

112/1992

170/1989

201/1972

230/1864

 Other

1(Ref.)

1.16 (0.64, 2.12)

0.94 (0.5, 1.79)

1.3 (0.67, 2.52)

 (Case/Total)

21/231

27/235

24/252

46/360

Education level

 No formal education

1(Ref.)

1.23 (0.89, 1.69)

1.03 (0.74, 1.43)

1.1 (0.77, 1.57)

 (Case/Total)

65/894

98/1020

101/1113

141/1266

 Primary school

1(Ref.)

1.59 (1.01, 2.51)

1.38 (0.86, 2.24)

1.99 (1.2, 3.33)

 (Case/Total)

31/520

51/517

47/470

72/448

 Middle school

1(Ref.)

1.23 (0.72, 2.1)

2.17 (1.3, 3.61)

1.48 (0.81, 2.73)

 (Case/Total)

26/524

31/446

58/452

37/354

 High school or above

1(Ref.)

1.59 (1.01, 2.51)

1.39 (0.86, 2.24)

2 (1.2, 3.33)

 (Case/Total)

11/285

17/241

19/189

26/156

Smoking status

 Never

1(Ref.)

1.44 (1.04, 2.01)

1.27 (0.91, 1.77)

1.49 (1.05, 2.11)

 (Case/Total)

56/1068

106/1275

123/1464

193/1649

 Former

1(Ref.)

0.7 (0.37, 1.35)

1.35 (0.74, 2.48)

0.92 (0.45, 1.88)

 (Case/Total)

21/193

19/216

33/182

24/166

 Current

1(Ref.)

1.52 (1.06, 2.17)

1.63 (1.11, 2.39)

1.69 (1.09, 2.62)

 (Case/Total)

56/962

72/733

69/578

58/409

Drinking status

 Never

1(Ref.)

1.44 (1.05, 1.99)

1.36 (0.98, 1.88)

1.65 (1.17, 2.32)

 (Case/Total)

61/1137

105/1290

124/1436

195/1580

 Former

1(Ref.)

0.81 (0.41, 1.58)

0.95 (0.49, 1.82)

0.8 (0.37, 1.74)

 (Case/Total)

17/162

22/195

30/209

21/154

 Current

1(Ref.)

1.49 (1.04, 2.14)

1.73 (1.18, 2.54)

1.5 (0.96, 2.34)

 (Case/Total)

55/924

70/739

71/579

60/490

Hypertension

 No

1(Ref.)

1.36 (0.99, 1.87)

1.53 (1.09, 2.14)

1.58 (1.08, 2.32)

 (Case/Total)

71/1608

91/1454

90/1222

79/1385

 Yes

1(Ref.)

1.35 (0.98, 1.85)

1.28 (0.93, 1.75)

1.41 (1.01, 1.97)

 (Case/Total)

62/615

106/770

135/1002

197/1263

Dyslipidemia

 No

1(Ref.)

1.54 (1.16, 2.04)

1.38 (1, 1.9)

1.77 (1.2, 2.61)

 (Case/Total)

88/1734

120/1418

86/997

54/476

 Yes

1(Ref.)

1.05 (0.73, 1.53)

1.25 (0.88, 1.76)

1.29 (0.91, 1.83)

 (Case/Total)

45/489

77/806

139/1227

222/1748