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Table 6 Factors associated with severity of dysmenorrhoea among school adolescents in northwest Ethiopia, March 2007.

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

  Dysmenorrhoea X2 (df) P value
  Mild (%) Moderate (%) Severe (%)   
  n = 299 n = 62 n = 54   
Cycle length      
   <21 days 48(16.2) 12(20.7) 10(18.6) 6.68(6) 0.57
   22-28 days 177(60) 30(51.7) 30(58.8)   
   29-35 days 41(13.9) 12(20.7) 5(9.8)   
   >35 days 29(9.8) 4(6.9) 6(11.8)   
Menses duration      
   2-3 days 133(44.9) 15(26.3) 16(32) 22.3(4) <0.02
   4-5 days 121(41.1) 35(61.4) 23(46)   
   6-8 days 41(13.9) 7(12.3) 11(22)   
Regularity      
   Irregular 130(44.1) 33(56.9) 31(60.8) 7(2) <0.03
   regular 165(55.9) 25(43.1) 20(39.2)   
Absent from school      
   Yes 117(39.9) 43(74.1) 36(70.6) 33.8(2) <0.001
   No 176(60.1) 15(25.9) 15(29.4)   
Visited Health professional      
   Yes 30(10.2) 10(17.2) 5(9.8) 2.5(2) 0.28
   No 263(89.8) 48(82.1) 46(90.2)