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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Cochlear Implants Int. 2013 Nov 25;15(4):211–221. doi: 10.1179/1754762813Y.0000000051

Table 4.

Correlation Matrix with all Predictor and Outcome Variables for all CI Participants (N=101)

PPVT-III
Standard
Score		 Age Age at CI Duration
CI		 Duration
Second CI
Group		 NWL
percent
correct		 Aided
PTA		 LNT @ 50
dB SPL		 LNT @ 70
dB SPL		 Mother’s
Education
Level		 CI
processor
PPVT-III1
Standard
Score		 Pearson Correlation 1
Sig. (2-tailed)
N 101
Age Pearson Correlation .030 1
Sig. (2-tailed) .766
N 101 101
Age at CI2 Pearson Correlation −.267 −.134 1
Sig. (2-tailed) .007 .180
N 101 101 101
Duration CI Pearson Correlation .133 .918 −.516 1
Sig. (2-tailed) .185 .000 .000
N 101 101 101 101
Duration
Second CI
Group		 Spearman Correlation .155 −.143 −.230 −.012 1
Sig. (2-tailed) .122 .153 .021 .905
N 101 101 101 101 101
NWL3
percent
correct		 Pearson Correlation .470 .250 −.259 .320 .006 1
Sig. (2-tailed) .000 .012 .009 .001 .951
N 101 101 101 101 101 101
Aided PTA4 Pearson Correlation − 382 −.003 −.022 .006 .026 −.237 1
Sig. (2-tailed) .000 .978 .825 .952 .795 .017
N 101 101 101 101 101 101 101
LNT @ 50
dB SPL5
 Pearson Correlation .360 −.205 −.039 −.161 .252 .289 −.542 1
Sig. (2-tailed) .000 .040 .701 .108 .011 .003 .000
N 101 101 101 101 101 101 101 101
LNT @ 70
dB SPL6 		Pearson Correlation .404 −.055 −.131 .005 .256 .398 −.446 .735 1
Sig. (2-tailed) .000 .583 .192 .962 .010 .000 .000 .000
N 101 101 101 101 101 101 101 101 101
Mother’s
Education
Level		 Pearson Correlation .206 .037 −.162 .098 .076 −.079 −.102 −.047 −.090 1
Sig. (2-tailed) .041 .719 .109 .334 .454 .436 .316 .643 .377
N 99 99 99 99 99 99 99 99 99 99
CI
processor		 Spearman Correlation .273 −.380 −.096 −.247 .380 .077 −.247 .351 .315 − .065 1
Sig. (2-tailed) .006 .000 .342 .013 .000 .447 .013 .000 .001 .520
N 101 101 101 101 101 101 101 101 101 99 101
1

PPVT-III = Pea body Picture Vocabulary Test, 3rd edition

2

CI = Cochlear Implant

3

NWL = Novel Word Learning

4

PTA= Pure Tone Average

5

LNT= Lexical Neighborhood Test

6

dB SPL = deciBels in Sound Pressure Level. Note: Duration second CI groups are: No second CI Less than 3 years (n=25), 3 years or more (n=28).