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Table 1 Subject characteristics

From: Comparison of spatial working memory in children with prenatal alcohol exposure and those diagnosed with ADHD; A functional magnetic resonance imaging study

Measure TD (n = 21) ARND (n = 22) ADHD (n = 20) Significancea Post-hoc tests
  Mean Std Dev Mean Std Dev Mean Std Dev   
Age (years) 12.60 1.29 12.21 1.63 11.99 1.32 F = 0.950 P = 0.392  
Gender (% male) 76.2   63.6   90   χ2 = 4.014 P = 0.134  
Household Income ($)b 70,842 15,302 52,989 19,690 66,167 27,416 F = 3.965 P = 0.024 TD > ARNDcP = 0.006
Full Scale IQ 107.81 13.08 74.38 11.69 96.55 16.87 F = 30.968 P <0.001 TD > ARNDdP <0.001
ADHD > ARND P <0.001
  1. aP value cutoff = 0.05; bAverage income in the postal code of residence; cGames-Howell test; dTukey’s HSD test. ADHD, attention deficit/hyperactivity disorder; ARND, alcohol related neurodevelopmental disorder; IQ, intelligence quotient: Std Dev, standard deviation; TD, typically developing.