Table 4 |
|||||
|
Studies on mean age at menarche in different regions |
|||||
|
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] |
|
|
|||||
|
1Years, median/mean ± SD. |
|||||
|
Goon et al. BMC Pediatrics 2010 10:60 doi:10.1186/1471-2431-10-60 |
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