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. Author manuscript; available in PMC: 2014 Oct 1.
Published in final edited form as: Dev Psychol. 2012 Dec 10;49(10):1931–1942. doi: 10.1037/a0031061

Table 3.

Production Rates per 10 mins. for Infant-Initiated Communicative Types at 13 and 18 Months for High-Risk (HR) Infants Who Eventually Received an Autism Diagnosis (HR-D) and Those Who Did Not (HR-ND)

HR-D (N=3)
HR-ND (N=12)
13 mo. 18 mo. 13 mo. 18 mo.
M (SE) M (SE) M (SE) 95% CI M (SE) 95% CI

Communication Rate 3.30 (1.17) 3.42 (1.27) 9.52 (1.71) [6.17, 12.87] 12.33 (1.84)a [8.72, 15.94]
CNWVs 3.16 (1.24) 2.45 (1.23) 7.24 (1.42) [4.46, 10.02] 4.43 (0.74)a [2.98, 5.88]
Words 0.00 (0.00) 0.15 (0.07) 0.67 (0.35) [0.00,1.36] 5.72 (1.69) [2.41, 9.03]
Deictic Gestures 0.15 (0.07) 0.97 (0.20) 3.14 (0.96) [1.26, 5.02] 5.33 (1.03) [3.31, 7.35]
Reach/Request 0.07 (0.07) 0.37 (0.20) 1.06 (0.29) [0.49, 1.63] 0.63 (0.16) [0.32, 0.94]
Give 0.07 (0.07) 0.30 (0.15) 0.60 (0.17) [0.27,0.93] 2.89 (0.74) [1.44, 4.34]
Show 0.00 (0.00) 0.00 (0.00) 0.27 (0.04) [0.19, 0.354] 0.41 (0.11) [0.19, 0.63]
Point 0.00 (0.00) 0.30 (0.07) 1.20 (0.73) [0.00, 2.63] 1.41 (0.44) [0.55, 227]
Gestures+CNWVs 0.00 (0.00) 0.15 (0.15) 1.26 (0.50) [0.28, 2.24] 1.80 (0.50) [0.82, 2.78]
Gestures+Words 0.00 (0.00) 0.00 (0.00) 0.27 (0.18) [0.00, 0.62] 1.35 (0.59) [0.19, 2.51]
Combination Repertoire 0.00 (0.00) 0.33 (0.33) 2.08 (0.45) [1.20, 2.96] 4.33 (0.69) [2.98, 5.68]
a

contained no outliers; all other HR-ND distributions had a single outlier.