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Table 1 Demographic and menstrual characteristics of the students who participated in the study

From: Use of complementary and alternative therapies for the treatment of dysmenorrhea among undergraduate pharmacy students in Malaysia: a cross sectional study

Variable Frequency (N = 219) Percentage (%)
Age (years)
 Less than 18 1 0.5
 18–20 102 46.6
 21–23 114 52.1
 24 and above 2 0.9
Year of study
 Year 1 61 27.9
 Year 2 46 21.0
 Year 3 69 31.5
 Year 4 43 19.6
Mean age at menarche (SD) 11.9 (1.2)  
Regularity of menses
 Regular 178 81.3
 Irregular 41 18.7
Length of menstrual cycle (days)
 Irregular 19 8.7
 Less than 20 21 9.6
 21–35 170 77.6
 More than 35 9 4.1
Duration of menstruation (days)
 Less than 5 1 0.5
 5–7 121 55.3
 8 and above 96 43.8
Menstrual flow
 Scanty 39 17.8
 Normal 160 73.1
 Heavy 20 9.1
Family history
 Yes 111 50.7
 No 108 49.3