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Correlation coefficients of strain by the laryngoscopists
| Macintosh | Miller | Macintosh - APP | Miller - APP | |
|---|---|---|---|---|
| Macintosh | 1 | 0.50 | 0.47 | 0.42 |
| Miller | 0.50 | 1 | 0.51 | 0.56 |
| Macintosh - APP | 0.47 | 0.51 | 1 | 0.63 |
| Miller - APP | 0.42 | 0.56 | 0.63 | 1 |
Correlation coefficients (Spearman’s rho) between the strains generated by the same larygnoscopist using the different blades and techniques. APP alcohol protective pad. All p < .001
