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Table 4 Menstrual pattern of Secondary school adolescents in northwest Ethiopia, March 2007.

From: Age at menarche and the menstrual pattern of secondary school adolescents in northwest Ethiopia

Menstrual characteristics Total (%) District Residence Gynaecologic age
   Dabat (n = 286) Koladiba (n = 279) Rural (n = 343) Urban (n = 222) <2 years (n = 432) 3-4 years (n = 121) >5 years (n = 12)
Cycle length         
<14 days 49 (8.6) 27 22 23 26 34 15 0
14-20 68 (12) 46 22 42 26 51 14 3
21-28 322(57) 148 173 191 130 248 66 7
29-35 76(13.4) 39 37 48 28 53 21 2
>35 days 51 (9) 28 26 39 12 46 5 0
Duration         
2-3 days 262(46.7) 134 128 163 99 207 49 6
4-5 days 229(40.8) 114 115 140 89 165 60 4
6-7 days 70(12.5) 38 32 38 32 56 12 2
Regularity         
Regular 323(57.2) 176 147 188 135 252 66 5
Irregular 242(42.8) 110 132 155 87 180 55 7