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Table 2 Ratings of handheld ultrasound devices per point-of-care ultrasound experts

From: Comparison of four handheld point-of-care ultrasound devices by expert users

Variable Rating per experts (n = 24) [mean (sd)] p-value
Butterfly iQ+™ Kosmos™ Lumify™ Vscan Air™
Ease of use
 Physical characteristics 3.75 (0.9) 3.54 (0.8) 4.17 (0.6) 4.42 (0.6)  < 0.001
 Software 4.38 (0.7) 3.79 (0.8) 4.17 (0.7) 4.25 (0.9) 0.059
 Maneuverability 4.38 (0.7) 3.63 (1.0) 4.00 (0.9) 4.58 (0.6) 0.002
 Overall satisfaction (ease of use) 3.96 (1.0) 3.63 (0.7) 4.08 (0.7) 4.25 (0.8) 0.028
Image quality
 Detail resolution 3.17 (1.0) 4.46 (0.5) 4.67 (0.5) 4.33 (0.8)  < 0.001
 Contrast resolution 3.13 (1.0) 4.33 (0.6) 4.58 (0.5) 4.21 (0.8)  < 0.001
 Penetration 3.00 (1.0) 4.46 (0.7) 4.42 (0.8) 4.13 (0.8)  < 0.001
 Clutter 2.67 (1.0) 4.29 (0.6) 4.42 (0.5) 3.79 (0.8)  < 0.001
 Overall satisfaction (image quality) 2.92 (1.2) 4.25 (0.7) 4.46 (0.5) 4.08 (1.0)  < 0.001
  1. Ratings of 1–5 based on a Likert scale of agreement (5) or disagreement (1)
  2. p-values from Kruskal–Wallis rank sum test; < 0.05 indicates at least one device is statistically different from another device