Table I.
Characteristics of the included studies
| Authors | Publication year | Data collection year | Country | Age (yr) | Sample size | Study population | Diagnostic method | Prevalence (%) | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
| ||||||||||||
| All stages | Stage 1 | Stage 2 | Stage 3 | Stage 4 | ||||||||
| Moen and Muus12 | 1991 | 1986-1989 | Norway | 20-50 | 208 | Asymptomatic women | Laparoscopic | 19.23 | 19.23 | 0.93 | - | 0.93 |
| Waller et al13 | 1993 | 1990-1992 | United Kingdom | 21-45 | 174 | Asymptomatic women | Laparoscopic | 32.2 | 22.98 | 7.47 | 1.72 | - |
| Melis et al14 | 1994 | 1991-1993 | Italy | 15-57 | 305 | Asymptomatic women | Laparoscopic | 24.9 | 9.15 | 26.2 | 7.86 | 5.24 |
| Chu et al15 | 1995 | 1993 | Taiwan | - | 752 | Asymptomatic women | Laparoscopic | 32.5 | - | - | - | - |
| Laufer et al16 | 1997 | 1990-1994 | USA | 13-21 | 46 | Women with chronic pelvic pain | Laparoscopic | 69.6 | 77.4 | 22.6 | - | - |
| Oral et al17 | 2003 | 1995-2001 | Turkey | 26-70 | 183 | Malignant epithelial ovarian tumours | Histopathological criteria | 7.65 | 4.37 | 4.37 | 3.27 | - |
| Darwish et al18 | 2006 | 1998-2005 | Egypt | - | 2493 | Women with chronic pelvic pain | Laparoscopic | 18.8 | 34.9 | 39.6 | 10.3 | 15.2 |
| Zacharia and O’Neill19 | 2006 | 2000-2003 | USA | 32-54 | 59 | Asymptomatic women | MRI | 34 | - | - | - | - |
| Ferrero et al20 | 2010 | 2007-2009 | Italy | <50 | 1291 | Infertile women | Ultrasound | 3.6 | - | - | - | - |
| Camilleri et al21 | 2011 | 2003-2008 | Malta | - | 437 | Infertile women | Laparoscopic | 16.9 | 8.69 | - | 1.37 | 0.91 |
| Abbas et al22 | 2012 | 2007 | Germany | 15-54 | 62323 | Infertile women | Laparoscopic | 0.81 | - | - | - | - |
| Fawole et al23 | 2015 | 2008-1010 | Nigeria | 18-45 | 245 | Asymptomatic women (in women with chronic pelvic pain=55.8%) | Laparoscopic | 48.1 | - | - | - | - |
| Ragab et al24 | 2015 | 2012-2014 | Egypt | - | 654 | Girls with severe dysmenorrhoea | Ultrasonography/laparoscopy/MRI | 12.3 | 5.45 | 3.18 | 3.63 | - |
| Umelo and Manchanda25 | 2015 | 2012-2014 | Indian | 15-49 | 440 | Asymptomatic women (infertile women=87.3% and in women with chronic pelvic pain=56.4%) | Laparoscopic | 25 | 7.3 | 35.5 | 31.8 | 25.1 |
| Fuldeore and Soliman26 | 2016 | 2012 | USA | 18-49 | 48020 | Asymptomatic women | Laparoscopic | 6.1 | - | - | - | - |
| Boujenah et al27 | 2017 | 2007-2015 | France | - | 52 | Infertile women | Ultrasonography/laparoscopy/MRI | 50 | - | - | - | - |
| Eisenberg et al28 | 2017 | 1998-2015 | Israel | 15-55 | 6146 | Asymptomatic women | Laparoscopic | 1.1 | - | - | - | - |
MRI, magnetic resonance imaging