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Table 2 Follow-up and questionnaire results

From: A novel three-dimensional printed vacuum bell for pectus excavatum treatment: a preliminary study

 

Frequency/median (Percent/range)

Questionnaire responders

40 (100%)

How was the device used?

 Duration per time, minutes #

30 (15,60)

 TIMES per day

1.5 (1,3)

 Vacuum, kPa

20 (10,30)

Complications

 Petechia

21 (52.5%)

 Blistering

12 (30%)

 Discomfort

5 (12.5%)

 Pain

9 (22.5%)

Effectiveness by questionnaire

 Poor

0 (0%)

 Fair

18 (45%)

 Good

20 (50%)

 Excellent

2 (5%)

Follow-up

Mean (SD)

 Duration, months

11.1 (3.8)

 Change in DR

−0.057 (0.023)

 Ratioa

0.54 (0.20)

  1. # Duration may have changed during treatment. Patients or parents were required to report the parameters they used most
  2. a The ratio of the least DR during usage to initial DR