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Table 2 Mean values and results of repeated measures analyses of variance: neurocognitive measures

From: Cognitive remediation improves cognition and good cognitive performance increases time to relapse – results of a 5 year catamnestic study in schizophrenia patients

  EG (n = 30) CG (n = 30) Main effect Main effect Interaction
  Pretest Posttest Pretest Posttest “group” “time” “time x group”
Measure mean (SD) mean (SD) mean (SD) mean (SD) F(4/55) mv. p F(2/57) mv. p F(2/57) mv. p
F(1/58) uv. F(1/58) uv. F(1/58) uv.
Attention ( multivariate )      .578 .680 5.266 .001 4.606 .003
  Degraded CPT omissions 15.48 (14.45) 10.54 (10.99) 15.44 (14.60) 13.92 (12.77) .029 .866 5.830 .019 1.639 .206
  Degraded CPT comissions 2.59 (2.28) 1.03 (1.49) 1.85 (1.95) 1.98 (3.45) .038 .847 6.086 .017 8.561 .005
  3-7 CPT omissions 26.05 (16.24) 18.70 (13.34) 23.80 (14.23) 24.07 (16.85) .205 .652 3.537 .065 4.104 .047
  3-7CPT comissions 1.68 (1.71) 0.89 (0.92) 1.87 (2.14) 1.81 (2.35) 1.562 .216 4.971 .030 3.725 .059
Memory ( multivariate )      1.557 .220 63.811 <.0005 51.214 <.0005
  WMS composite scoreverbal memory 83.03 (18.16) 103.27 (15.74) 84.23 (24.58) 87.10 (21.63) 2.267 .138 47.757 <.0005 26.993 <.0005
  WMS composite scorevisual memory 77.23 (12.62) 101.03 (12.03) 83.57 (16.44) 83.27 (18.73) 2.597 .112 48.653 <.0005 51.170 <.0005
Problem solving ( multivariate )      1.694 .179 7.895 <.0005 20.416 <.0005
  WCST % total errors 28.69 (3.84) 19.94 (3.45) 25.23 (8.71) 27.78 (7.90) 2.188 .145 17.427 <.0005 57.793 <.0005
  WCST % failure to maintain set 6.79 (3.80) 3.28 (2.12) 5.66 (4.29) 6.47 (4.82) 1.263 .266 10.590 .002 26.918 <.0005
  WCST % perseveration errors 9.11 (4.45) 2.87 (2.22) 7.53 (5.42) 8.74 (6.45) 3.920 .052 15.192 <.0005 33.180 <.0005
  TMT B-A 80,53 (48,93) 53.13 (23.65) 88.13 (56.80) 77.47 (49.42) 2.147 .148 14.513 <.0005 2.804 .046
Speed of processing      1.120 .333 11.489 <.0005 2.026 .141
  TMT A performance time 49.43 (20.21) 40.77 (16.49) 49.90 (20.27) 46.20 (15.19)       
  TMT B performance time 129.97 (63.70) 93.90 (37.04 138.03 (72.96) 123.67 (56.66)