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Table 3 The separation ratio estimate in first-degree relatives

From: Familial aggregation and heritability of hypertension in Han population in Shanghai China: a case-control study

Siblings number per household

Household number

Total siblings number(T)

Cases among siblings (R)

Household number have only one case among siblings (J)

1

167

167

167

167

2

163

326

154

129

3

119

357

160

87

4

106

424

168

89

5

75

375

121

43

6

29

174

53

18

7

17

119

49

14

8

2

16

6

1

9

5

45

11

3

10

1

10

2

0

Total

684

2013

891

580