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Table 2 Cohort Characteristics

From: Association of tympanostomy tubes with future assistive hearing devices–a population based study

 

TT Cohort

No-TT Cohort

Control Cohort

Sample Size

193,880

203,283

961,168

Age (years) at Index Datea (Mean ± SD)

3.61 ± 2.85

2.43 ± 2.65*

3.08 ± 2.88*

Sex (% female)

39.29

45.21*

39.30

Episodes of Physician-diagnosed Eustachian Tube Dysfunction (Mean ± SD, per year)

5.11 ± 3.91b

5.06 ± 0.37b*

0.14 ± 0.40b*

  1. aIndex dates are the date of first TT procedure for the TT cohort, latest diagnosis date of > 5 episodes in 1-year period for the No-TT cohort, and date of first TT procedure of the matched children from TT cohort for the Control cohort
  2. bin 1-year prior to index date
  3. *p < 0.001 versus TT cohort
  4. TT Tympanostomy Tube
  5. SD Standard Deviation
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BMC Pediatrics

ISSN: 1471-2431

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