Table 1. Behavioral changes during onset of menstruation (n = 478).

Behaviour changes*	Number	%ages
Irritability	292	61.09
Emotional disturbances	256	53.56
Depression	149	31.17
Feeling of sickness	318	66.53
Absent from school/college	67	14.02
Decreased physical activity	204	42.68

^*Subjects had multiple responses