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Table 1 Number and percentage of menstruating girls (average age for each age band is x + 0.5 years)

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

   Menstruating girls   Non-menstruating girls
Age Total number of girls n % n
12+ 30 13 53.4 17
13+ 31 18 58.1 13
14+ 67 58 86.6 9
15+ 115 112 97.4 3
16+ 150 147 97.4 3
17+ 170 167 97.4 3
18+ 159 159 100.0  
Total 722 674   48