TABLE 2.

Decline or Improvement in Neuropsychometric Performance on Follow-up Examinations

No. of Abnormal Tests	FU 1 (n = 102)	FU 2 (n = 76)	FU 3 (n = 33)
Declined
0	13.7%	31.6%	45.4%
Only 1	18.6%	27.6%	24.2%
Only 2	33.3%	26.3%	18.2%
Only 3	20.6%	7.9%	12.1%
≥4	13.3%	6.6%	0%
Improved
0	43.1%	23.7%	6.1%
Only 1	38.2%	32.9%	48.5%
Only 2	11.8%	29.0%	18.2%
Only 3	5.9%	11.8%	18.2%
≥4	1.0%	2.6%	9.1%

The percentages reported represent the percentage of patients with a certain number of changed (declined or improved) neuropsychometric tests. The numbers of patients used in the Wilcoxon signed-rank test calculation were 66 and 26, respectively, when we compared follow-up (FU) 1 with FU2 and FU 1 with FU 3 (P<0.02, FU 1 vs FU 2 and FU 1 vs FU 3, declined; P=0.002, FU 1 vs FU 2, improved; P=0.011, FU 1 vs FU 3, improved). Twenty-three patients were used in the Wilcoxon signed-rank test calculation when we required that all four tests be completed. The comparison of FU 1 with FU 2, FU 1 with FU 3, and FU 2 with FU 3 yielded P=0.30, P=0.05, and P=0.35 under these circumstances for declined tests, and P=0.08, P=0.005, and P=0.34 for improved tests.