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Table 2 Sample characteristics at enrollment across sites

From: A randomized, placebo-controlled trial of d-cycloserine for the enhancement of social skills training in autism spectrum disorders

Characteristics Cincinnati (n=15) Indiana University (n=52) p-value
Demographics    
Age (years), mean (SD) 8.56 (1.77) 8.24 (1.84) .56
Sex, n (%) male 11 (73.33) 44 (84.62) .44a
Group, n (%) Cycloserine 8 (53.33) 26 (50.00) .82
Clinical Variables    
Stanford-Binet V, mean (SD)    
 Full Scale IQ 87.86 (13.78) 90.40 (17.67) .62
 NonVerbal IQ 92.57 (15.36) 93.10 (17.17) .92
 Verbal IQ 85.29 (14.19) 88.92 (18.94) .51
VABS-II Expressive Language subscale standard score, mean (SD) 84.67 (9.76) 86.37 (15.21) .68
Clinical Global Impression-Severity 4.00 (0.00) 4.06 (0.24) .38
Diagnosis, n (%)    
 PDD-NOS 9 (60.00) 18 (34.62) .08
 Autistic Disorder 4 (26.67) 4 (7.69) .07a
 Asperger’s Disorder 2 (13.33) 30 (57.69) .003a*
Concomitant medications, n (%)    
 Antipsychotics 2 (13.33) 14 (26.92) .49a
 Alpha-2 Agonists 3 (20.00) 11 (21.15) 1.00a
 Stimulants 8 (53.33) 17 (32.69) .15
 Sleep Aids 3 (20.00) 13 (25.00) 1.00a
 Mood Stabilizers 0 (0.00) 3 (5.77) 1.00a
 Glutamatergic Modulators 0 (0.00) 1 (1.92) 1.00a
 Other 1 (6.67) 3 (5.77) 1.00a
Concomitant treatment, n (%)    
 Speech Therapy 6 (40.00) 30 (57.69) .23
 Occupational Therapy 6 (40.00) 21 (40.38) .98
 Behavioral Therapy 2 (13.33) 16 (30.77) .32a
 Other Psychotherapy 0 (0.00) 3 (5.77) 1.00a
 Physical Therapy 1 (6.67) 1 (1.92) .40a
 Social Skills Training 1 (6.67) 4 (7.69) 1.00a
 Music Therapy 1 (6.67) 0 (0.00) .22a
 Other Treatments 1 (6.67) 2 (3.85) .54a
  1. a: Fisher’s Exact Test