Table 2

Results by device type

Device Efficacy

Manual

Powered

p-value


Able to acquire biopsy core specimen

98.0%

90.4%

0.205


Mean number attempts for core acquisition

1.5 ± 0.8

1.2 ± 0.5

0.112


Mean time core acquisition (seconds)

203.1 ± 149.5

102.1 ± 85.4

0.000*


Patient Pain Scores

Manual

Powered

p-value


Mean VAS needle insertion (0-10)

3.2 ± 2.9

3.1 ± 3.1

0.900


Mean VAS overall (0-10)

3.5 ± 2.3

3.8 ± 2.8

0.623


Pain-free patients 24 hours post procedure

33.3%

66.7%

0.003*


Pain-free patients 7 days post procedure

76.1%

82.6%

0.607


Satisfaction & Complications

Manual

Powered

p-value


Operator satisfaction (0-10)

7.8 ± 2.1

8.1 ± 1.7

0.488


Patient satisfaction (0-10)

9.3 ± 1.6

9.4 ± 1.2

0.778


Device related complications

0%

3.8%

0.495


Core Biopsy Pathology Assessment

Manual

Powered

p-value


Mean length (mm)

11.0 ± 5.5

13.3 ± 6.6

0.368


Mean width (mm)

1.3 ± 0.5

1.7 ± 0.5

0.123


Mean volume (mm3)

20.4 ± 9.0

36.8 ± 21.2

0.039*


General quality excellent/good

80.0%

66.7%

0.628


Medullary quality excellent/good

70.0%

55.6%

0.650


Overall quality rated adequate

70.0%

77.8%

1.000


*denotes statistical significance

Berenson et al. Diagnostic Pathology 2011 6:23   doi:10.1186/1746-1596-6-23

Open Data