Table 1 Study information
Author and Year | Country | Design | Randomisation | Allocation concealment | Source of funding | Number | Surgical approach |
|---|---|---|---|---|---|---|---|
Flisberg et al. 2001 | Sweden | RCT | NR | NR | University and Society of Medicine grants | 33 | Open |
Yokoyama et al. 2005 | Japan | RCT | NR | NR | NR | 30 | Open |
Fares et al. 2014 | Egypt | RCT | Computer generated | Opaque envelopes | None | 30 | Open |
Wang et al. 2017 | China | RCT | Random number table | NR | NR | 80 | Open |
Wang et al. 2019 | China | RCT | Computer generated | Opaque envelopes | Innovation and Science Foundation grants | 40 | Open |
Liu and Wang 2015 | China | RCT | NR | NR | NR | 60 | Open |
Li 2019 | China | RCT | Computer generated | Opaque envelopes | Science Foundation and educational grants | 100 | Open |
Zhu et al. 2020 | China | RCT | Computer generated | NR | NR | 120 | Open |
Maghsoudloo et al. 2023 | Iran | RCT | Based on odd/even surgical date | NR | NR | 80 | Open |
Xu et al. 2023 | China | RCT | Computer generated | Opaque envelopes | Cancer, Science Foundation and research grants | 168 | Laparoscopic |