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Table 2 Demographics and clinical characteristics of the endometriosis patients and controls

From: Role of vascular endothelial growth factor polymorphisms (-2578C > A, -460 T > C, -1154G > A, +405G > C and +936C > T) in endometriosis: a case–control study with Brazilians

Variable Controls Endometriosis P valueb
No (%) No (%)
BMI    
  <18.5 3 (3.4) 13 (7.7) <0.001
  18.5 ≤ BMI ≤ 24.9 31 (34.8) 113 (67.3)
  25 ≤ BMI ≤ 29.9 25 (28.1) 31 (18.5)
  30 ≤ BMI < 40 27 (30.3) 11 (6.5)
  ≤ 40 3 (3.4) 0 (0)  
Parity   
  0 21 (22.1) 116 (66.3) <0.001
  1 14 (14.7) 35 (20.0)
  2 26 (27.4) 18 (10.3)
  ≤ 3 34 (35.8) 6 (3.4)
Spontaneous abortion 21 (22.8) 22 (12.6%) 0.032
Infertility    
  No 88 (92.6) 93 (53.1) <0.001
  Primary 6 (6.3) 60 (34.3)
  Secondary 1 (1.1) 22 (12.6)
Symptoma   
  Dysmenorrhoea 21 (22.3) 91 (51.7) <0.001
  Non-cyclic chronic pelvic pain 36 (38.3) 91 (51.7) 0.036
  Deep dyspareunia 12 (12.9) 100 (57.5) <0.001
  1. BMI is Body mass index. aA patient can have more than one concomitant symptom; bChi-Square Test or Fisher’s exact test.