Table 5 Details of the selected articles (n = 341) regarding the type of article and methodological parameters
From: Correction to: A bibliometric analysis of scientific production in the field of lingual orthodontics
| Article type | n (%) * | Statistics (%)** | Control group*** | Sample size | Articles |
|---|---|---|---|---|---|
| Interventional clinical trials | 6 (1.8%) | 6 (100%) | 6 (100%) | ≤ 20 | 1 |
| > 20 | 5 | ||||
| Observational studies | 70 (20.5%) | 50 (71.4%) | 9 (12.8%) | ≤ 20 | 8 |
| > 20 | 62 | ||||
| Case reports/series | 58 (17.1%) | 0 (0%) | – | = 1 | 43 |
| > 1 | 15 | ||||
| Laboratory studies | 96 (28.1%) | 0 (0%) | – | – | – |
| Systematic reviews | 3 (0.9%) | 3 (100%) | – | – | – |
| Narrative reviews | 16 (4.7%) | 2 (12.5%) | – | – | – |
| Interviews | 2 (0.6%) | 0 (0%) | – | – | – |
| Informative studies | 40 (11.7%) | 0 (0%) | – | – | – |
| Others | 50 (14.7%) | – | – | – | – |