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Table 1 Descriptive analyses of sample characteristics across the sites of recruitmenta

From: A quantitative association study of SLC25A12 and restricted repetitive behavior traits in autism spectrum disorders

  UIC
(n = 88)
UF
(n = 91)
SSC
(n = 720)
P value (χ2/ANOVA)b Post hoc(Scheffé)
Age in yearsa 8.3 ± 4.8 10.8 ± 3.6 6.9 ± 2.8 < 0.001 UF>>c
Gender, M:F 75:13 75:16 620:100 NS  
Race, white:other 57:31 68:23 583:137 0.001  
Communication 76.2 ± 13.9 68.0 ± 17.0 79.4 ± 13.9 < 0.001 SSC>>d
Daily living 75.1 ± 12.5 71.6 ± 17.9 78.6 ± 13.8 < 0.001 SSC>>
Socialization 67.5 ± 10.3 62.4 ± 16.0 72.7 ± 12.7 < 0.001 SSC>>
Adaptive behavior composite 71.7 ± 11.0 66.1 ± 14.7 75.1 ± 11.8 < 0.001 SSC>>
RBS-R      
Stereotyped behavior 6.2 ± 4.1 5.4 ± 3.3 4.1 ± 3.2 < 0.001 SSC<<e
Self-injurious behavior 3.4 ± 4.8 4.1 ± 4.5 2.0 ± 2.8 < 0.001 SSC<<
Compulsive behavior 6.9 ± 5.5 6.1 ± 5.1 4.1 ± 3.8 < 0.001 SSC<<
Ritualistic behavior 7.2 ± 5.4 6.2 ± 4.3 5.2 ± 3.9 < 0.001 SSC<<
Sameness behavior 11.1 ± 8.0 10.9 ± 7.1 7.8 ± 6.0 < 0.001 SSC<<
Restricted behavior 5.6 ± 3.3 4.8 ± 3.3 3.6 ± 2.7 < 0.001 SSC<<
Sum 37.4 ± 21.8 36.5 ± 19.6 26.9 ± 17.1 < 0.001 SSC<<
ABC      
Irritability 16.0 ± 11.1 16.2 ± 10.2 10.9 ± 8.5 < 0.001 SSC<<
Lethargy 14.0 ± 9.0 13.5 ± 8.6 9.5 ± 6.9 < 0.001 SSC<<
Stereotypy 6.5 ± 4.9 6.8 ± 5.0 4.6 ± 4.0 < 0.001 SSC<<
Hyperactivity 21.0 ± 12.5 21.2 ± 11.3 16.0 ± 10.2 < 0.001 SSC<<
Inappropriate speech 4.6 ± 3.4 4.3 ± 3.1 3.7 ± 2.9 < 0.01 SSC<
Sum 62.1 ± 32.9 62.0 ± 28.5 44.7 ± 24.6 < 0.001 SSC<<
  1. aData are mean ± SD unless otherwise stated.
  2. bχ2/ANOVA: frequency data (gender, race) were analyzed by χ2 statistics, whereas the remaining scale data were analyzed by ANOVA statistics,
  3. cUF>>: higher mean age in the UF sample compared with those of UIC-ACE or SSC.
  4. dSSC>>: higher mean scores in the SSC sample compared with those of UIC-ACE or UF.
  5. eSSC<<: lower mean scores in the SSC sample compared with those of UIC-ACE or UF.