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Table 9 Differences between patients according to number of hospitalizations: Tam verbal flexibility, symbol digit modalities (SDMT) and Benton visual retention tests

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

  Number of hospitalizations (n)   
Tests Used 1 (44)
mean ± SD
2 (41)
mean ± SD
3 (38)
mean ± SD
4
(31)
mean ± SD
F value P value
TAM correct words a 43.39 ± 16.02 34.73 ± 12.21 29.42 ± 11.55 25.27 ± 11.34 F(1,28) = 13.682 0.001
TAM score a 49.50 ± 16.40 42.46 ± 12.74 36.76 ± 10.63 33.17 ± 10.92 F(1,121) = 11.321 0.001
SDMT a 31.05 ± 8.69 30.56 ± 10.97 29.71 ± 11.59 23.61 ± 10.38 F(4,61) = 3.693 0.01
Benton Errors 1 b 4.84 ± 2.11 5.15 ± 2.89 5.74 ± 2.63 6.55 ± 2.88 F(6,132) = 2.927 0.01
Benton Distortions 1 b 2.93 ± 1.76 2.93 ± 2.04 3.45 ± 2.13 4.10 ± 2.10 F(3,118) = 2.682 0.05
Benton Rotation errors 1 b 0.48 ± 0.70 0.83 ± 0.95 1.08 ± 1.22 0.87 ± 0.99 F(3,74) = 2.741 0.05
Benton responses 2 a 6.55 ± 2.24 6.59 ± 2.16 6.08 ± 2.21 5.19 ± 2.33 F(7,76) = 2.898 0.01
Benton responses3 a 6.48 ± 1.97 6.37 ± 1.61 7.27 ± 1.84 5.65 ± 1.87 F(5,76) = 4.535 0.001
Benton errors 3 b 3.50 ± 1.94 3.66 ± 1.62 2.71 ± 1.81 4.29 ± 1.87 F(3,101) = 4.475 0.005
Benton Distortions 3 b 2.80 ± 2.15 3.24 ± 2.05 2.24 ± 2.16 4.00 ± 1.95 F(3,143) = 4.388 0.005
  1. n. number of patients
  2. a. Higher scores indicate better function.
  3. b. higher scores indicate poorer function
  4. TAM: TAM verbal flexibility test.
  5. SDMT: symbol digit modality test