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The Ultrasound Journal

Table 1 Statistical analysis comparing UCT and SCT groups

From: Comparing contamination rates of sterile-covered and uncovered transducers for ultrasound-guided peripheral intravenous lines

Relative light units

Sterile-covered transducer

Uncovered transducer

Median

0

1

Range

0–2

0–19

Mean

0.34

2.29

Variance

0.35

18.2

Standard deviation

0.58

4.27

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