Year | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | Overall |
---|---|---|---|---|---|---|---|
(n = 21) | (n = 56) | (n = 92) | (n = 106) | (n = 124) | (n = 145) | (n = 544) | |
Number of protocols registered in PROSPERO, Absolute (%) | 17 (80.1%) | 42 (75.0%) | 81 (88.0%) | 93 (87.7%) | 119 (96.0%) | 133 (91.7%) | 485 (89.2%) |
Registered prior submission | |||||||
Absolute (%) | 11 (64.7%) | 30 (71.4%) | 62 (76.5%) | 84 (90.3%) | 112 (94.1%) | 125 (94.0%) | 424 (87.4%) |
Days, Mean (SD) | 45 (45) | 67 (77) | 78 (110) | 87 (131) | 101 (107) | 110 (129) | 94 (117) |
Days, Median (IQR) | 22 (7–85) | 43 (13–71) | 36 (11–93) | 29 (8–114) | 71 (28–127) | 62 (22–152) | 49 (15–120) |
Submission to first peer-review | |||||||
Days, Mean (SD) | 28 (13) | 35 (24) | 32 (16) | 35 (20) | 55 (55) | 75 (65) | 50 (48) |
Days, Median (IQR) | 29 (19–42) | 32 (22–41) | 29 (21–41) | 32 (20–46) | 39 (23–70) | 52 (31–95) | 36 (22–57) |
Submission to acceptance | |||||||
Days, Mean (SD) | 74 (42) | 77 (44) | 82 (55) | 91 (44) | 109 (52) | 165 (85) | 111 (69) |
Days, Median (IQR) | 61 (46–105) | 77 (51–95) | 75 (46–105) | 80 (56–117) | 103 (72–138) | 142 (103–214) | 98 (64–139) |
Submission to publication | |||||||
Days, Mean (SD) | 91 (43) | 101 (46) | 99 (55) | 110 (47) | 124 (54) | 180 (87) | 128 (70) |
Days, Median (IQR) | 86 (59–127) | 99 (73–118) | 91 (64–120) | 101 (74–136) | 118 (84–148) | 158 (117–222) | 113 (82–155) |
Acceptance to publication | |||||||
Days, Mean (SD) | 17 (21) | 24 (32) | 18 (10) | 18 (12) | 14 (7) | 16 (11) | 17 (15) |
Days, Median (IQR) | 12 (0–22) | 15 (11–20) | 16 (11–21) | 16 (11–21) | 13 (9–17) | 12 (9–19) | 14 (9–19) |
Number of reviewers | |||||||
Mean (SD) | 0.9 (0.6) | 1.1 (0.5) | 1.1 (0.6) | 1.4 (0.8) | 1.1 (0.6) | 1.7 (0.8) | 1.3 (0.7) |
Median (IQR) | 1 (1–1) | 1 (1–1) | 1 (1–1) | 1 (1–2) | 1 (1–1) | 2 (1–2) | 1 (1–2) |
Number of revisions | |||||||
Mean (SD) | 0.9 (0.8) | 1.0 (0.5) | 1.2 (0.7) | 1.2 (0.6) | 1.0 (0.4) | 1.2 (0.5) | 1.1 (0.6) |
Median (IQR) | 1 (0–1) | 1 (1–1) | 1 (1–2) | 1 (1–2) | 1 (1–1) | 1 (1–1) | 1 (1–1) |
Extent of first revision, Absolute (%) | |||||||
Major | 4 (19.1%) | 14 (25.0%) | 25 (27.2%) | 38 (35.9%) | 49 (39.5%) | 76 (52.4%) | 206 (37.9%) |
Minor | 11 (52.4%) | 34 (60.7%) | 52 (56.5%) | 55 (51.9%) | 63 (50.8%) | 57 (39.3%) | 272 (50.0%) |
No revision required | 1 (4.8%) | 3 (5.4%) | 6 (6.5%) | 2 (1.9%) | 3 (2.4%) | 7 (4.8%) | 22 (4.0%) |
No (open) peer review | 5 (23.8%) | 4 (7.1%) | 8 (8.7%) | 10 (9.4%) | 8 (6.5%) | 4 (2.8%) | 40 (7.2%) |
Reviewer report missing | 0 (0%) | 1 (1.8%) | 1 (1.1%) | 1 (0.9%) | 1 (0.8%) | 1 (0.7%) | 4 (0.9%) |