Table 2.

Presentation of results.

Reference	Outcomes stratified by risk factors	Presented as	Authors’ conclusions
Abbott et al. (2003)	Outcomes of dysmenorrhoea, dyspareunia, non-menstrual PP, dyschezia pre and postop scores stratified by endometriosis AFS staging 1–4	Median, IQR and P	The results from sub-analysis examining pain scores by stage suggested a reduction in pain for all four parameters examined.
	QOL measures reported but not stratified
Chopin et al. (2005)	Outcomes of dysmenorrhoea, dyspareunia, CPP, Dyschezia, lower Urinary tract symptoms pre and postop scores stratified buy anatomical location (USL, Vagina, bladder, intestine)	Mean, s.d. and P	The results presented show that for each location in the surgical classification, the mean scores for the five symptoms according to the numerical rating scale were significantly lower postoperatively. This result is nearly significant when the group-specific sample sizes of patients are very small.
Banerjee et al. (2006)	Global pain score stratified by no endometriosis, only superficial endometriosis, deep ± superficial endometriosis	Mean pain score and s.d.	This small study suggests that surgical therapy does not reduce pain scores in superficial endometriosis but is valuable in the treatment of deep or infiltrating disease.
Milingos et al. (2006)	Outcomes for dysmenorrhoea, deep dyspareunia and non-menstrual pain stratified by: 1. number of improved patients (reduction ≥2 cm VAS was considered significant); 2. change in pain scores (graph) for severity AFS score <16 (group 1) and 16+ (group2)	Graphics: changes in pain scores with P; proportion improved patients and P	Cases with advanced disease seem to benefit the most
Ghai et al. (2020)	Outcome is any reduction of EPH 30 pain score reduction (responders): 1. comparison between the proportion of responders among women with severe and superficial endometriosis; 2. stratification within the superficial and severe groups by anxiety and depression HADS scores, feeling of control, emotional wellbeing, sexual relationship and pain EPH30 scores, VAS for dysmenorrhoea, dyspareunia, CPP, dyschezia	proportion of non-responders in severe and superficial endometriosis with P value median and range for HADS, EPH30 domains and for VAS with P value for superficial and severe endometriosis	Severity of disease and pain and pain may be used to predict response to surgery