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Table 1 Characteristics of participants included in analyses

From: Event-related potentials to repeated speech in 9-month-old infants at risk for autism spectrum disorder

  Group  
  HRA (SD) LRC (SD) p value
N 35 45  
Male: female 18:17 23:22  
Race (% nonwhite) 2.9 13.6  
Ethnicity (% Hispanic or Latino) 8.6 2.3  
Family income level (% less than $75,000) 16.7 15.2  
Maternal education (% less than college degree) 32.3 8.3  
Geodesic sensor net:Hydrocel sensor net 17:18 18:27  
NetAmp200:NetAmp300 25:10 32:13  
S1 trials 26.8 (7.6) 26.4 (7.4)  
S2 trials 22.2 (5.9) 21.2 (6.5)  
S3 trials 18.3 (5.2) 16.8 (4.6)  
Deviant trials 26.1 (7.1) 25.3 (7.0)  
6-month Mullen T-scores (31 HRA, 37 LRC)    
 Visual reception 49.69 (9.0) 47.86 (7.3) .378
 Fine motor 48.38 (7.4) 47.84 (6.9) .765
 Receptive language 49.54 (8.4) 47.65 (5.7) .293
 Expressive language 45.85 (6.1) 46.51 (5.8) .662
12-month Mullen T-scores (38 HRA, 41 LRC)   
 Visual reception 53.03 (8.2) 57.20 (8.4) .036*
 Fine motor 58.73 (10.7) 61.98 (8.3) .146
 Receptive language 42.94 (10.5) 46.83 (7.4) .067
 Expressive language 46.15 (12.4) 52.12 (8.1) .015*
18-month Mullen T-scores (33 HRA, 35 LRC)   
 Visual reception 48.33 (7.4) 52.47 (7.9) .035*
 Fine motor 51.97 (7.0) 53.60 (6.0) .313
 Receptive language 43.40 (13.3) 55.71 (12.8) <.001**
 Expressive language 47.97 (9.5) 52.89 (7.0) .019*
18-month ADOS (31 HRA, 35 LRC)    
 Severity score 2.66 (1.9) 1.54 (0.9) .002**
  1. Note that not all families provided demographic information.
  2. *p < .05, **p < .01.