Table 2.
Correlation of each of US measurements with cadaver characteristics in each group (Pearson’s correlation analysis) (significant values in bold italics). Spearman Rho correlation analysis was done for Likert scale
| Variables | Cadaver Characteristics | GR 1LICF | GR 2CML | GR 3CLM | GR 4Retroclavicular | ||||
|---|---|---|---|---|---|---|---|---|---|
| R | P | R | P | R | P | R | P | ||
| Number Of Cords Visible (Nos) | Age | 0.17 | 0.64 | 0.44 | 0.20 | 0.25 | 0.49 | 0.17 | 0.64 |
| Height | -0.15 | 0.69 | 0.04 | 0.92 | 0.14 | 0.71 | -0.15 | 0.69 | |
| Chest Circumf | -0.30 | 0.40 | -0.17 | 0.65 | 0.04 | 0.91 | 0.30 | 0.40 | |
| Neck Circumf | -0.13 | 0.73 | -0.05 | 0.89 | 0.12 | 0.75 | -0.13 | 0.73 | |
| Vertical Depth (Cm) | Age | 0.17 | 0.65 | 0.49 | 0.15 | 0.36 | 0.31 | 0.54 | 0.11 |
| Height | 0.22 | 0.53 | 0.64 | 0.05 | 0.49 | 0.15 | 0.34 | 0.34 | |
| Chest Circumf | 0.62 | 0.06 | 0.65 | 0.04 | 0.36 | 0.31 | 0.70 | 0.03 | |
| Neck Circumf | 0.54 | 0.10 | 0.70 | 0.03 | 0.53 | 0.11 | 0.74 | 0.01 | |
| EP To Target Distance (Cm) | Age | 0.23 | 0.50 | 0.42 | 0.22 | 0.43 | 0.22 | - | - |
| Height | 0.30 | 0.40 | 0.25 | 0.48 | 0.51 | 0.13 | - | - | |
| Chest Circumf | 0.54 | 0.10 | 0.57 | 0.09 | 0.27 | 0.45 | - | - | |
| Neck Circumf | 0.57 | 0.08 | 0.74 | 0.14 | 0.55 | 0.10 | - | - | |
| Needle Angle (Degrees) | Age | 0.42 | 0.23 | 0.56 | 0.88 | 0.13 | 0.72 | -0.02 | 0.96 |
| Height | 0.04 | 0.90 | 010 | 0.78 | 0.22 | 0.54 | -0.04 | 0.90 | |
| Chest Circumf | 0.73 | 0.02 | 0.82 | 0.003 | 0.58 | 0.08 | 0.38 | 0.28 | |
| Neck Circumf | 0.75 | 0.01 | 0.51 | 0.13 | 0.48 | 0.16 | 0.12 | 0.74 | |
| Tip Visibility (Likert Scale) | Age | -0.08 | 0.83 | -0.18 | 0.62 | 0.11 | 0.75 | -0.38 | 0.29 |
| Height | 0.22 | 0.54 | 0.04 | 0.91 | 0.47 | 0.18 | -0.36 | 0.31 | |
| Chest Circumf | -0.04 | 0.92 | 0.06 | 0.87 | 0.12 | 0.75 | 0.27 | 0.46 | |
| Neck Circumf | 0.09 | 0.80 | -0.35 | 0.32 | -0.13 | 0.72 | -0.11 | 0.76 | |
| Shaft Visibility (Likert Scale) | Age | -0.30 | 0.40 | -0.46 | 0.18 | 0.00 | 1.00 | -0.25 | 0.49 |
| Height | 0.01 | 0.97 | -0.09 | 0.81 | 0.42 | 0.22 | -0.19 | 0.60 | |
| Chest Circumf | -0.28 | 0.43 | 0.13 | 0.71 | 0.24 | 0.51 | 0.25 | 0.49 | |
| Neck Circumf | -0.02 | 0.96 | -0.16 | 0.65 | -0.10 | 0.79 | -0.07 | 0.84 | |
| Needle Depth (Cm) | Age | -0.27 | 0.45 | 0.24 | 0.51 | 0.06 | 0.87 | 0.50 | 0.14 |
| Height | -0.40 | 0.26 | 0.02 | 0.96 | 0.09 | 0.81 | 0.51 | 0.13 | |
| Chest Circumf | 0.20 | 0.57 | 0.47 | 0.17 | 0.13 | 0.72 | 0.63 | 0.05 | |
| Neck Circumf | 0.10 | 0.79 | 0.52 | 0.13 | 0.44 | 0.20 | 0.57 | 0.08 | |
LICF – Lateral infraclavicular fossa approach, CML – Costclavicular medial to lateral approach, CLM – Costoclavicular lateral to medial approach, r – Measure of the strength of association between two variables, EP – Entry point, Circumf – Circumference