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Table 3 The reproducibility of self-reported age at menarche according to age in Tromsø 4 among 6731 women participating in Tromsø 3 (1986–87) and Tromsø 4 (1994–95). Cross-tabulation of self-reported age at menarche in Tromsø 3 (1986–87) and Tromsø 4 (1994–95). The Tromsø Study

From: The reproducibility of self-reported age at menarche: The Tromsø Study

  

Reported age at menarche – Tromsø 3

  

<12

12

13

14

15

>15

Total

Reported age at menarche - Tromsø 4

<12

479

145

20

5

0

1

650

12

126

941

283

52

7

2

1411

13

22

258

1241

305

45

7

1878

14

4

47

380

1002

202

20

1655

15

0

7

64

244

442

67

824

>15

1

0

2

28

82

200

313

Total

632

1398

1990

1636

778

297

6731