Table 2 Characteristics of included SRs
From: Protocol registration improves reporting quality of systematic reviews in dentistry
Characteristic | Non-registered/no protocol (n = 333) | Registered (n = 149) | Protocol n = 13 | |||
|---|---|---|---|---|---|---|
n | % | n | % | n | % | |
Category of journal | ||||||
General | 91 | 27.3% | 40 | 26.8% | 2 | 15.4% |
Specialty | 242 | 72.7% | 109 | 73.2% | 11 | 84.6% |
SR Focus | ||||||
Treatment/Therapeutic | 146 | 43.8% | 59 | 39.6% | 10 | 76.9% |
Diagnosis | 61 | 18.3% | 31 | 20.8% | 1 | 7.7% |
Prognosis | 35 | 10.5% | 17 | 11.4% | 0 | 0% |
Other | 35 | 10.5% | 10 | 6.7% | 1 | 7.7% |
Epidemiology | 28 | 8.4% | 16 | 10.7% | 0 | 0 |
Unclear | 11 | 3.3% | 9 | 6.0% | 0 | 0 |
Prevention | 12 | 3.6% | 6 | 4% | 1 | 7.7% |
Mixed | 5 | 1.5% | 1 | 0.7% | 0 | 0 |
Number of authors: median (IQR) | 5 (3–6) | 5 (3–5) | 5 (3–6) | |||
Number of studies: median (IQR) | 14 (9–26) | 14 (6–24) | 16 (8–23) | |||
Number of databases: median (IQR) | 3 (4–2) | 4 (5–3) | 3 (4–2) | |||