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. Author manuscript; available in PMC: 2017 Jan 1.
Published in final edited form as: Ear Hear. 2016 Jan-Feb;37(1):14–26. doi: 10.1097/AUD.0000000000000204

Table 3.

Means and standard deviations (SDs) of word recognition, perceptual attention weighting factors, and auditory sensitivity d' values for normal-hearing (NH) and cochlear implant (CI) groups. The t value and p value columns show results of t-test, comparing means between NH and CI groups. Degrees of freedom for all t-tests were N-2.

Groups
NH CI
   Mean (SD) Mean (SD) t p
Test Scores
  N 19 28
  Word recognition (percent correct) 97.1 (2.5) 66.5 (18.7) 7.05 <.001
Perceptual Attention
  N 18 23
  Cop-cob spectral cue (weighting factor) 0.4 (1.0) 0.4 (0.8) 0.04 0.97
  Cop-cob duration cue (weighting factor) 7.2 (3.7) 7.9 (3.4) 0.59 0.56
  N 18 13
  Sa-sha static spectral cue (weighting factor) 7.9 (3.5) 5.6 (3.9) 1.77 .087
  Sa-sha dynamic spectral cue (weighting factor) 7.5 (3.0) 1.6 (1.4) 2.85 .008
Auditory Sensitivity
  N 19 15
  glide-fall (d' value) 3.7 (0.4) 2.5 (0.9) 4.81 <.001
  N 19 12
  glide-rise (d' value) 3.1 (0.5) 2.6 (1.0) 1.51 0.14
  N 18 27
  dur (d' value) 2.2 (0.7) 2.4 (0.6) 1.14 0.26