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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