Author

Period of study

Setting/Country

Population/Sample

Methodology

Outcome-Prevalence

Ekwempu CC

1978

Ahmadu Bello University Hospital, Nigeria

329

Africans

Retrospective

27/329 = 8.2% of histological confirmed specimen after laparotomy

Osefo NJ

1989

Enugu, University Hospital, Nigeria

1385

Africans

Retrospective

65/5995 = 4.3% of histological confirmed specimen after laparotomy

Somigliana

2012

Uganda

351

Africans

Prospective

1/351 = 0.003% Based on medical history and clinical findings

Fawole. A. O

2015

Ibadan Hospital, Nigeria.

239

Africans

Prospective

115/239 = 48.1% Laparoscopy visual evidence of endometriosis without histology confirmation