Table 3.

Reliable change intervals based on data of the whole patient sample.

Measure	6-month follow up: baseline	12-month follow up: baseline
SPART	−9.29 ⩾ x2 – x1 ⩽ +9.29	−9.55 ⩾ x2 – x1 ⩽ +9.55
SPARTDR	−3.67 ⩾ x2 – x1 ⩽ +3.67	−3.56 ⩾ x2 – x1 ⩽ +3.56
PASAT-3’	−10.88 ⩾ x2 – x1 ⩽ +15.60*	−10.49 ⩾ x2 – x1 ⩽ +15.21*
Digit span forward	−1.75 ⩾ x2 – x1 ⩽ +3.11*	−1.77 ⩾ x2 – x1 ⩽ +3.13*
Digit span backward	−2.64 ⩾ x2 – x1 ⩽ +2.64	−2.47 ⩾ x2 – x1 ⩽ +2.47
Spatial span forward	−3.33 ⩾ x2 – x1 ⩽ +3.33	−2.71 ⩾ x2 – x1 ⩽ +2.71
Spatial span backward	−3.45 ⩾ x2 – x1 ⩽ +3.45	−3.15 ⩾ x2 – x1 ⩽ +3.15
Logical memory I	−9.77 ⩾ x2 – x1 ⩽ +9.77	−11.03 ⩾ x2 – x1 ⩽ +11.03
Go/Nogo: reaction time	−88.51 ⩾ x2 – x1 ⩽ +88.51	−98.60 ⩾ x2 – x1 ⩽ +98.60
Go/Nogo: errors	−3.49 ⩾ x2 – x1 ⩽ +3.49	−3.15 ⩾ x2 – x1 ⩽ +3.15
Divided attention: omissions	−6.81 ⩾ x2 – x1 ⩽ +6.81	−9.70 ⩾ x2 – x1 ⩽ +9.70
Visual search: reaction time	−409.80 ⩾ x2 – x1 ⩽ +409.80	−414.96 ⩾ x2 – x1 ⩽ +414.96

SPART, Spatial Recall Test; SPARTDR, delayed recall of the Spatial Recall Test; PASAT-3’, Paced Auditory Serial Addition Test 3’; Go/Nogo, selective-attention test; x₂, patient’s follow-up test score; x₁, patient’s baseline test score; ^*corrected for practice effects. If the computed value for the patient falls outside of the limits of the confidence interval, reliable improvement or decline can be assumed. Note that for some tests, a higher score indicates a worse, and a lower score, a better performance (Go/Nogo, divided attention and visual search), thus, reliable decline has occurred if x₂ – x₁ exceeds the upper limit of the interval and reliable improvement has occurred if x₂ – x₁ falls below the lower limit of the interval.