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Table 6 Differences between patients according to type of substance

From: The impacts of substance abuse and dependence on neuropsychological functions in a sample of patients from Saudi Arabia

Test items Alcohol
mean ± SD
Heroin
mean ± SD
Amphetamine
mean ± SD
F value P value
CTMT Time 1 b 85.69 ± 34.14 75.3 ± 22.09 69.47 ± 18.61 F(2,101) = 5.3 0.006
CTMT Time 2 b 120.37 ± 41 111.34 ± 33.42 132.62 ± 5.02 F(2,101) = 5.02 0.008
CTMT errors 2 b 0.59 ± 1.25 0.27 ± 0.84 0.19 ± 1.33 F(2,62) = 3.18 0.048
Stroop Time 4 b 31.92 ± 6.92 24.95 ± 7.84 25.78 ± 6.13 F(1,101) = 14.78 0.000
Stroop Time 5 b 36.28 ± 8.07 28.29 ± 9.48 29.96 ± 8.40 F(1,101) = 11.94 0.000
Stroop Errors 5 b 2.95 ± 2.86 2.36 ± 2.20 3.59 ± 3.25 F(3,35) = 2.90 0.05
5 dots total score a 26.08 ± 6.84 30.16 ± 9.29 24.88 ± 7.81 F(5,85) = 3.24 0.01
5 dots Unique designs a 22.57 ± 6.71 27.45 ± 8.44 21.33 ± 7.18 F(4,101) = 3.49 0.01
5 dots Repetitions b 3.66 ± 4.11 2.79 ± 2.74 3.7 ± 3.2 F(5,85) = 3.24 0.01
TAM interference b 0.8 ± 2.01 1.6 ± 2.61 0.53 ± 1.5 F(4,101) = 3.49 0.01
TAM repetitions b 0.38 ± 0.8 1.18 ± 1.53 0.43 ± 1.29 F(3,38) = 6.66 0.001
TAM words a 33.25 ± 12.59 36.28 ± 16.6 33.85 ± 15.45 F(7,101) = 2.07 0.05
TAM total score a 40 ± 11.78 42.32 ± 16.59 41.13 ± 14.73 F(13,166) = 1.76 0.05
SDMT a 27.04 ± 10.02 32.8 ± 10.88 26.89 ± 10.11 F(4,42) = 5.64 0.001
  1. a. Higher scores indicate better function.
  2. b. higher scores indicate poorer function
  3. CTMT: color trail making test
  4. TAM: TAM verbal flexibility test.
  5. SDMT: symbol digit modalities test