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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Ear Hear. 2013 Sep;34(5):562–574. doi: 10.1097/AUD.0b013e31828d2bd6

TABLE 1.

Sample Characteristics

Variable N Metric Mean SD Range
Child & Family
 Chronologic age 60 Years 10.5 0.8 9.1 – 12.8
 WISC Perceptual Reasoning Quotient 60 Standard Score2 105.2 12.9 71–135
 Highest parent education level 58 # of Years 16.4 1.8 12–20
 Family income 59 Category1 8.8 1.9 3–10
 SES (Education + Income) 58 Composite 25.3 2.6 19–30
 CELF – Core Language Index 60 Standard Score2 89.19 20.19 42–132
 SRSS - Social Skills Rating 60 Standard Score2 103.85 14.35 66–129
Audiological Characteristics
 Age at diagnosis 60 Years; Months 0;10 0;8 0;1 – 2;6
 Age 1st HA 60 Years; Months 0;11 0;8 0;1 – 2;7
 Age at 1st CI 60 Years; Months 1;10 0;7 0;12 – 3;2
 Duration 1st CI 60 Years; Months 8;6 0;11 6;2 – 11;2
 Age at 2nd CI 29 Years; Months 7;8 1;8 3;10 – 9;11
 Pre-Implant Unaided PTA 60 dB HL 108.0 10.9 77–120
 Pre-Implant Aided PTA (HA) 60 dB HL 65 15.1 32–80
 Current Aided PTA (CI) 60 dB HL 21.5 7.3 4–48
Educational Characteristics
 1st Mainstreamed 60 Grade level3 K 1.0 PreK - 6
 Class Size >20 60 % of grades 46.5 42.8 0 – 100
1

Income categories: 1 = Under $5,500; 2 = $ 5,500 – $ 9,999; 3 = $10,000 – $14,999; 4 = $15,000 –$24,999; 5 = $25,000 – $34,999; 6= $35,000 – $49,999; 7 = $50,000 – $64,999; 8 = $65,000 – $79,999; 9 = $80,000 – $94,999; 10= $95,000 – over

2

Standard Score Mean = 100; SD = 15 (Normal hearing age mates in normative samples) CELF – Clinical Evaluation of Language Fundamentals; SRSS – Social Skills Rating System

3

Non-parametric summary values reported for grade placement at mainstreaming are the median and inter-quartile range rather than an average and standard deviation.