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Table 4 The patient’s norm scores and percentiles on WMS-III, WAIS-IV Processing Speed Index (PSI), and d2-R at two weeks after admission (T0), at re-test (T1), and at follow-up (T2)

From: Case report: cognitive performance in an extreme case of anorexia nervosa with a body mass index of 7.7

Instrument Norm scores Percentiles 95% confidence intervals
T0 T1 T2 T0 T1 T2 T0 T1 T2
WMS-III Indexes:
 Auditory Immediate 138 138 142 99 99 99.7 128–143 128–143 132–146
 Auditory Delayed 132 108 132 98 70 98 119–137 98–116 119–137
 Visual Immediate 115 118 127 84 88 96 102–123 105–125 112–132
 Visual Delayed 118 125 109 88 95 73 105–125 111–131 97–118
 Immediate Memory 132 134 142 98 99 99.7 121–137 123–139 131–146
 Auditory Recognition Delayed 120 130 120 91 98 91 104–126 111–133 104–126
 General Memory 130 125 125 98 95 95 119–135 115–131 115–131
 Working Memory 102 88 96 55 21 39 92–111 80–99 98–106
WAIS-IV PSI 93 93 98 32 32 45 84–104 84–104 89–108
d2-R
 Processed Targets     21 18 34    
 Errors     > 90 99 90    
 Accuracy (% errors)     > 90 99 90    
 Corrected total score     31 27 42    
 Concentration Performance     42 42 54    
  1. WMS-III norm scores (in relation to age): The mean is 100. 69 and below is extremely low. 70 to 79 is borderline. 80 to 89 is a low average. 90 to 109 is average. 110 to 119 is a high average. 120 to 129 is superior. 130 and above is very superior. WAIS-IV Processing Speed Index norm score (in relation to age): The mean is 100. 69 and below is extremely low. 70 to 79 is borderline. 80 to 89 is a low average. 90 to 109 is average. 110 to 119 is a high average. 120 to 129 is superior. 130 and above is very superior. d2 percentiles (in relation to age): The mean is 50