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. Author manuscript; available in PMC: 2011 Jul 1.
Published in final edited form as: Lang Speech Hear Serv Sch. 2010 Apr 26;41(3):277–288. doi: 10.1044/0161-1461(2009/08-0096)

Table 5.

Scoring Method 1 – Likelihood Ratio Analysis for Total Percentage of Phonemes Correct (TPPC)

SLI (n = 29) TD (n = 47)

No. Prop. No. Prop. Likelihood
Ratio
(95% CI)
Post-Test
Probability of
Disorder
≤ 54 14 .4827 1 .0213 22.66
(3.15–163.56)
96%

55 – 66 11 .3793 3 .0638 5.94
(1.81–19.53)
86%

67 – 76 3 .1034 10 .2128 .48
(0.15–1.62)
32%

≥77 1 .0345 33 .7021 .05
(0.007–0.34)
5%