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Table 4 Studies on mean age at menarche in different regions

From: Growth status and menarcheal age among adolescent school girls in Wannune, Benue State, Nigeria

Year

n

Age

Sample

Age at menarche 1

Reference

1949

250

8-18

Urban school girls (Lagos)

14.3

[33]

1960-1

335

12-19

Urban school girls (Ibo)

14.07 ± 0.16

[34]

1973-4

2029

10-17

urban school girls (Ibadan)

13.7 ± 0.03

[24]

 

328

 

Rural

14.5 ± 0.09

 

1978

1365

10-18

All

13. 54 ± 0.07

[25]

 

1216

 

Urban

13.48 ± 0.09

 
 

149

 

Semi-urban

14.05 ± 0.18

 

1982-3

2207

10-19

Urban (Enugu)

13.3 ± 1.09

[26]

1985

  

Mixed (Ilorin)

13.7 ± 1.0

[27]

1990

  

School girls (Ile-Ife)

13.4 ± 1.4

[28]

 

5736

11-18

School girls

13.42 ± 1.51

[29]

 

352

13-15

Urban school girls

13.94 ± 1.31

[30]

 

859

 

Urban school girls (Portharcourt)

13.19 ± 1.32

[32]

   

Rural school girls (Etche)

14.22 ± 1.47

 

2006

358

12-18

School girls (Kaduna)

12.81 ± 1.31

[35]

 

900

10-20

Urban school girls (Portharcourt)

13.43 ± 2.19

[31]

2009

722

12-18

Rural school girls (Tarka)

13.02 ± 3.0

[Present study]

  1. 1Years, median/mean ± SD.