Characteristics | n | % |
---|---|---|
Journal | ||
Periodontology | 258 | 47% |
Implantology | 286 | 53% |
Dental specialty | ||
Periodontology | 171 | 31% |
Implantology | 373 | 69% |
Pilot Study | ||
Yes | 26 | 5% |
No | 518 | 95% |
Design | ||
Parallel | 444 | 82% |
Split-mouth | 84 | 15% |
Crossover | 9 | 2% |
Other | 4 | 1% |
Parallel and split-mouth | 3 | 1% |
Type of intervention | ||
Interventional RCT | 544 | 100% |
Type of procedure | ||
Surgical | 431 | 79% |
Non-surgical | 113 | 21% |
Centre | ||
Single-centre | 464 | 85% |
Multi-centre | 80 | 15% |
Number of treatment arms | ||
2 | 464 | 85% |
3 | 59 | 11% |
4 | 19 | 3% |
5 | 1 | 0.5% |
8 | 1 | 0.5% |
CONSORT endorsement | ||
Yes | 315 | 58% |
No | 229 | 42% |
Funding | ||
Non-profit organization | 174 | 32% |
Profit organization | 221 | 41% |
Self-funded | 45 | 8% |
Not reported | 104 | 19% |
Conflict of interest | ||
Reported | 516 | 95% |
Not reported | 28 | 5% |
Statistical results | ||
Significant results | 432 | 79% |
Non-significant results | 112 | 21% |
Registration | ||
Registered | 316 | 58% |
Not registered | 228 | 42% |
Statistician | ||
Statistician involved | 115 | 21% |
Statistician not involved | 429 | 79% |
Country | ||
USA | 63 | 12% |
Italy | 59 | 11% |
Brasil | 54 | 10% |
Switzerland | 33 | 6% |
Spain | 33 | 6% |
China | 30 | 6% |
Germany | 28 | 5% |
Turkey | 23 | 4% |
Egypt | 22 | 4% |
Netherlands | 19 | 3% |
Top 10 countries | 364 | 67% |
Remaining countries | 180 | 33% |
Continent | ||
Africa | 27 | 5% |
Asia | 134 | 25% |
Australia | 4 | 1% |
Europe | 255 | 47% |
North America | 67 | 12% |
South America | 57 | 10% |
Ethics board approval | ||
Reported | 526 | 97% |
Not reported | 18 | 3% |
Flow diagram | ||
Reported | 317 | 58% |
Not reported | 227 | 42% |
Flow diagram (where reported) | ||
Main text | 294 | 93% |
Additional information | 23 | 7% |
Type of analysis | ||
Intention-to-treat | 54 | 10% |
Per Protocol | 14 | 3% |
Not reported | 460 | 84% |
Intention-to-treat and per protocol | 16 | 3% |
Characteristics | Median | IQR |
Number of authors | 6 | 2 |
Sample size | 36 | 29 |