Summary of the 1240 included studies
| Google h5 index: median | 48 | ||
| Authors per study: median | 6 | ||
| Topic: no of studies (% of total) | Surgery | 611 (49) | |
| Obstetrics and gynaecology (O&G) | 522 (42) | ||
| Anaesthesia and Critical care (A&C) | 59 (5) | ||
| Surgery/O&G | 3 (0.2) | ||
| Surgery/A&C | 15 (1) | ||
| O&G/A&C | 9 (0.7) | ||
| Surgery/O&G/A&C | 21 (2) | ||
| Primary study design: no of studies (% of total | Qualitative | 101 (8) | |
| Cross-sectional | 482 (39) | ||
| Cohort | 266 (21) | ||
| Case–control | 19 (2) | ||
| Case series | 24 (2) | ||
| Clinical trial | 58 (5) | ||
| Feasibility study | 31 (3) | ||
| Costing analysis | 45 (4) | ||
| Systematic review and/or meta-analysis | 99 (8) | ||
| Other | 115 (9) | ||
| Author gender: no of authors (% of total) | Male | 5626 (60) | |
| Female | 3638 (39) | ||
| Unknown | 37 (0.4) | ||
| First author gender: no of authors (% of total) | Male | 642 (52) | |
| Female | 596 (48) | ||
| Unknown | 2 (0.2) | ||
| Last author gender: no of authors (% of total) | Male | 815 (66) | |
| Female | 415 (34) | ||
| Unknown | 2 (0.2) | ||
| Middle author gender: no of authors (% of total) | Male | 4169 (61) | |
| Female | 2627 (38) | ||
| Unknown | 33 (0.5) | ||
| Author seniority: no of authors (% of total) | 1: Undergraduate | 89 (1) | |
| 2: Postgraduate | 806 (9) | ||
| 3: Specialty trainee, postdoctoral academic | 1701 (18) | ||
| 4: Consultant/attending clinician fully qualified as a generalist or specialist, principal investigator | 3862 (42) | ||
| 5: Senior leadership or management | 2258 (24) | ||
| Unknown | 585 (6) | ||
| First author seniority: no of authors (% of total) | 1 | 20 (2) | |
| 2 | 139 (11) | ||
| 3 | 313 (25) | ||
| 4 | 519 (42) | ||
| 5 | 201 (16) | ||
| Unknown | 48 (4) | ||
| Last author seniority: no of authors (% of total) | 1 | 1 (0.08) | |
| 2 | 35 (3) | ||
| 3 | 135 (11) | ||
| 4 | 536 (44) | ||
| 5 | 496 (40) | ||
| Unknown | 29 (2) | ||
| Middle author seniority: no of authors (% of total) | 1 | 68 (1) | |
| 2 | 632 (9) | ||
| 3 | 1253 (18) | ||
| 4 | 2807 (41) | ||
| 5 | 1561 (23) | ||
| Unknown | 508 (7) | ||
| Author institutional affiliation: no of authors (% of total) | High income country (HIC) | 4744 (51) | |
| All low-income and middle-income countries (LMIC) | 4192 (45) | ||
| Upper-middle-income country (MIC) | 1180 (13) | ||
| Lower MIC | 1908 (21) | ||
| Low income country (LIC) | 1089 (12) | ||
| MIC and LIC (MIC and LIC) | 15 (0.2) | ||
| HIC and L/MIC | 365 (4) | ||
| First author institutional affiliation: no of authors (% of total) | HIC | 706 (57) | |
| LMIC | 417 (34) | ||
| HIC and L/MIC | 117 (9) | ||
| Last author institutional affiliation: no of authors (% of total) | HIC | 792 (64) | |
| LMIC | 356 (29) | ||
| HIC and L/MIC | 84 (7) | ||
| Middle author institutional affiliation: no of authors (% of total) | HIC | 3246 (48) | |
| LMIC | 3419 (50) | ||
| HIC and L/MIC | 164 (2) | ||