Table 1.
Methods of included studies.
| Author/Year | Country | Study Design | Number of patients analyzeda |
Mean Patient Age (years) |
ETT size | Method of Visualization |
Duration of Intubation (mean days) |
|---|---|---|---|---|---|---|---|
| Colton House 201140 | United States | Cross-sectional | 61 | 56 | 6.0 – 8.0 | Indirect | 9 |
| Kastonos 198333 | Spain | Cohort | 19 | 59 | 7.0 – 9.0 | Indirect | 6.2 |
| Megarbane 201034 | France | Cohort | 209 | 40 | 6.5 – 8.0 | Indirect | 1.2 |
| Rangachari 200635 | India | Cohort | 51 | 50 | 7.0 – 8.5 | Indirect | 4b |
| Scheel 201641 | United States | Cross-sectional | 51 | 58 | ≤7, ≥8 | Indirect | 9.4 |
| Tadié 201036 | France | Cohort | 136 | 62 | 6.5 – 8.0 | Indirect | 6.9 |
| Van der Meer 201037 | South Africa | Cohort | 32 | 49 | nr | Indirect | 4.5 |
| Volpi 198738 | United States | Cohort | 16 | 53 | nr | Direct | 20.3 |
| Whited 198339 | United States | Cohort | 200 | nr | nr | Direct, Indirect | nr |
Abbreviations: ETT, endotracheal tube; nr, not reported
a
Reflects the number of patients meeting inclusion/exclusion criteria, and therefore analyzed and reported in this systematic review.
b
Duration in median days.