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Table 3 Incidence of endometriosis-affected first-degree relatives of endometriosis patients and controls

From: Family incidence of endometriosis in first-, second-, and third-degree relatives: case-control study

  Real-case analysis
Relatives Endometriosis group (n = 80) Control group (n = 60) Odds ratio
[95% CI]*
P-value
Mothers 5/80 (6.3%) 2/60 (3.3%) 1.93 [0.32; 14.98] n.s.+
Daughters 0/9 (0%) 1/15 (6.2%) - n.s.+
Sisters 3/47 (6.4%) 1/59 (1.7%) 3.95 [0.35;100.59] n.s.+
Total 8/136 (5.9%) 4/134 (3.0%) 2.03 [0.54; 8.25] n.s.+
  Worst-case analysis
Relatives Endometriosis group (n = 80) Control group (n = 60) Odds ratio
[95% CI]*
P-value
Mothers 9/80 (11.3%) 2/60 (3.3%) 3.67 [0.70; 25.68] n.s.+
Daughters 0/9 (0%) 1/15 (6.2%) - n.s.+
Sisters 4/47 (8.5%) 1/59 (1.7%) 5.40 [0.55; 129.08] n.s.+
Total 13/136 (9.6%) 4/134 (3.0%) 3.46 [1.01; 13.00] 0.042
  1. * 95% CI = 95% confidence interval;+ n.s. = not significant