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Table 4 Scores on the RAADS-14 Screen, differences from the autism spectrum disorders (ASD) sample, and internal consistency

From: RAADS-14 Screen: validity of a screening tool for autism spectrum disorder in an adult psychiatric population

Phase n Mean ± SD RAADS-14 Screen score Internal consistency, α
Median (range) M-W U (z)a r b F1c F2d F3e RAADS-14 Screen
Phase II          
 ASD 58 27.9 ± 11.5 30 (0–42) 0.84 0.67 0.63 0.88
 ADHD 43 17.5 ± 9.5 18 (1–36)f 596.0 (-4.5) 0.68 0.80 0.42 0.51 0.77
 Other psychiatric disorders 95 11.9 ± 8.3 12 (0–39)f 772.5 (-7.5) 0.57 0.75 0.54 0.57 0.78
 Non-psychiatric controls 590 3.9 ± 4.6 3 (0–29)f 1528 (-11.6) 0.48 0.65 0.32 0.53 0.70
Total sample 792 7.4 ± 9.3 4 (0 – 42) 0.86 0.64 0.76 0.90
Phase III          
 ASD 77 30.8 ± 8.6 32 (8–42)    0.75 0.62 0.62 0.80
 ADHD 301 15.4 ± 9.3 15 (0–42)f 2824 (-10.3) 0.59 0.73 0.49 0.62 0.79
 Other psychiatric disorders 69 12.6 ± 9.3 11 (0–39)f 467.5 (-8.6) 0.71 0.75 0.40 0.76 0.84
Total sample 457 17.4 ± 11.0 16 (0 – 42)   0.80 0.58 0.73 0.86
  1. aMann–Whitney U-test.
  2. bEffect size.
  3. cMentalizing Deficits items: 1, 4, 9, 11, 12, 13, 14.
  4. dSensory Reactivity items: 2, 7, 10.
  5. eSocial Anxiety items: 3, 5, 6, 8.
  6. fP < 0.001.