Group

Number of cases

Hypertension

Atrial fibrillation or valvular heart disease

Smoking

Dyslipidemia

Diabetes

Less physical exercise

Group

Family history of stroke

High-risk group

313

222 (70.93)

23 (7.35)

104 (33.23)

145 (46.33)

113 (36.10)

144 (46.01)

105 (33.55)

78 (24.92)

Middle and low-risk group

747

168 (22.49)

13 (1.74)

103 (13.79)

110 (14.73)

46 (6.16)

117 (15.66)

87 (11.65)

43 (5.76)

χ²

222.525

21.143

53.036

120.564

155.123

109.426

71.323

80.109

P

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001

<0.001