Results
Initially the research strategy identified seventeen studies published in the last 10 years. Thirteen articles were excluded on the basis of failure to meet inclusion criteria. Finally the search revealed four relative articles published between 2014 and 2019 and offered 336 patients for this analysis, 143 of which underwent SPL and 193 MPL (Figure 1). Two of the studies were retrospective case-control studies, one was randomized controlled trial and the other was non-randomized concurrent control trial13-16. According to the surgical outcomes none of the cases was converted to a different surgical approach and no complication occurred during the perioperative period. Serum AMH was similar between the two groups before the surgery [MD=0.04, 95%CI (0.43, 0.52), p=0.8) and after the surgery [MD=-0.15, 95%CI (0.53, 0.23), p=0.44]. Thus, the meta-analysis demonstrated similar and non significant reduction in AMH levels between the two groups four weeks after the procedure irrespective of the surgical technique [MD=0.11, 95%CI (-0.01, 0.24), p=0.07] (Figure 2). Regarding analysis of hospital stay there was also no statistically significant difference between two groups [MD=-0.26, 95%CI (-0.97, 0.45), p=0.48] (Figure 3). Perioperative outcomes analysis revealed that operative time (min) was significantly longer [MD=0.57, 95%CI (0.30, 0.83), p<0.00001] (Figure 4) and blood loss (ml) was significantly higher [MD=0.58, 95%CI (0.04, 1.12) p=0.03] in SPL group (Figure 5). The quality of these results is consistent but poor, as illustrated by the number of the studies, substantial variation in treatment effects and low precision of the point estimates.