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Table 2 Reproductive characteristics and menstrual patterns of secondary and preparatory school female students in Debremarkos town, North West Ethiopia, 2016

From: Premenstrual syndrome and factors associated with it among secondary and preparatory school students in Debremarkos town, North-west Ethiopia, 2016

Variables Frequency (n = 492) Percent (%)
Age at menarche
 9–12 171 34.9
 13–14 184 37.6
 15–17 135 27.6
Menstrual cycle pattern
 Regular 371 75.4
 Irregular 121 24.6
Menstrual cycle length in days (n = 371)
 < 21 10 26.6
 21–35 353 71.7
 > 35 8 1.6
Duration menstrual of flow in days
 1–2 18 3.7
 3–6 398 80.9
 ≥ 7 76 15.4
Amount of menstrual flow (n = 477)
 Heavy 168 35.2
 Normal 275 57.7
 Light 34 7.1