Table 2 Time from completion to publication: association with other study characteristics
Studies n (%) | Months Median (IQR) | ||
|---|---|---|---|
Overalla | 471 (100 %) | 24 (16–35) | |
Year of publication | |||
<1990 | 10 (2 %) | 26 (17–53) | |
1990–1994 | 15 (3 %) | 18 (14–38) | |
1995–1999 | 44 (9 %) | 23 (15–36) | |
2000–2004 | 99 (21 %) | 26 (18–37) | |
2005–2009 | 243 (52 %) | 23 (16–35) | |
≥2010 | 60 (13 %) | 22 (15–35) | |
Journal impact factor | |||
<4 or not available | 312 (66 %) | 25 (16–37) | |
4–9 | 129 (27 %) | 22 (15–33) | |
≥10 | 30 (6 %) | 22 (16–34) | |
Number of authors | |||
<6 | 170 (36 %) | 23 (14–38) | |
≥6 | 301 (64 %) | 24 (17–34) | |
Continent of first author | |||
Africa | 32 (7 %) | 31 (20–48) | |
Asia | 125 (27 %) | 20 (13–29) | |
Europe | 183 (39 %) | 24 (17–35) | |
North America | 116 (25 %) | 26 (16–39) | |
Oceania | 10 (2 %) | 28 (21–44) | |
South America | 5 (1 %) | 19 (14–50) | |
Type of test | |||
Imaging | 229 (49 %) | 24 (16–34) | |
Other | 242 (51 %) | 24 (16–37) | |
Type of data collection | |||
Prospective | 192 (41 %) | 24 (17–34) | |
Retrospective | 96 (20 %) | 25 (15–36) | |
Not reported | 183 (39 %) | 24 (15–38) | |
Study durationb | |||
<13 months | 115 (24 %) | 24 (15–34) | |
13–24 months | 139 (30 %) | 25 (19–35) | |
≥25 months | 216 (46 %) | 24 (14–37) | |
Number of participants | |||
<100 | 208 (44 %) | 24 (15–35) | |
100–999 | 232 (49 %) | 24 (16–35) | |
≥1000 | 31 (7 %) | 27 (20–39) | |