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. Author manuscript; available in PMC: 2015 Dec 4.
Published in final edited form as: Gynecol Oncol. 2015 May 23;138(2):441–444. doi: 10.1016/j.ygyno.2015.05.014

Table 3.

Expected vs. Observed Enrollment

White Incidence Black Incidence Expected
W:B ratio
Expected Incidence Per 100,000
  Ovary 12.9 9.5 1 to 0.74
  Endometrial 24.8 22.4 1 to 0.90
  Cervical 7.7 10.3 1 to 1.34
  Sarcoma 3.6 7 1 to 1.94
Observed White Observed Black Observed
W:B ratio
Observed Incidence
  Ovary 23,269 1,258 1 to 0.05
  Endometrial 9,289 850 1 to 0.09
  Cervical 4,421 1,340 1 to 0.30
  Sarcoma 638 238 1 to 0.37
Expected
W:B ratio 		Observed
W:B ratio 		Fold Difference
in Ratios
  Ovary 1 to 0.74 1 to 0.05 14.8 fold
  Endometrial 1 to 0.90 1 to 0.09 9.8 fold
  Cervical 1 to 1.34 1 to 0.30 4.5 fold
  Sarcoma 1 to 1.94 1 to 0.37 5.2 fold