Table 1.
Sample and quality of the studies.
| Reference | Type of Study | Age and Gender (F/M) | Smokers | Number of Implants (PS/PM) | Bias Risk |
|---|---|---|---|---|---|
| [11] | RCT | 36/34 50 ± 7.3 |
Yes, up to 10 cig. | 45/25 | 3/7 |
| [12] | RCT | 20/15 49.5 |
Yes, up to 10 cig. | 50/50 | 1/7 |
| [13] | RCT | 53/27 56.2 |
No | 56/59 | 3/7 |
| [14] | RCT | 31/37 51.44 |
Yes, up to 10 cig. | 74/72 | 2/7 |
| [15] | RCT | 19/15 52.2 |
Up to 10 cig. | 34/34 | 2/7 |
| [16] | RCT | 33/18 43.29 |
No | 58/56 | 2/7 |
| [17] | RCT | 17/0 53.7 |
No | 31/31 | 3/7 |
| [18] | RCT | 53/27 49.75 |
No | 54/59 | 3/7 |
| [19] | RCT | 77/15 50.59 |
No | 73/76 | 3/7 |
RCT: randomized clinical trial; cig.: cigarettes.