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. Author manuscript; available in PMC: 2010 May 11.
Published in final edited form as: Pediatr Blood Cancer. 2007 Sep;49(3):318–322. doi: 10.1002/pbc.21142

TABLE III.

Intra-individual standard deviations of blood flow velocity (cm/sec) on TCD given time between examinations and tcd classification

ALL SUBJECTS
TIME BETWEEN EXAMINATIONS TCD CLASSIFICATION SUBJECTS STANDARD DEVIATION (CM/SEC)
≤3 MONTHS NORMAL 99 14.8
CONDITIONAL 270 14.2
ABNORMAL 199 15.2
>3, <6 MONTHS NORMAL 143 14.6
CONDITIONAL 84 13.8
ABNORMAL 17 14.1
ALL SUBJECTS -- 812 14.9
EXCLUDING 7 SUBJECTS WITH DIFFERENCES BETWEEN VELOCITES ON TWO EXAMINATIONS ≥69 CM/SEC.
TIME BETWEEN EXAMINATIONS TCD CLASSIFICATION SUBJECTS STANDARD DEVIATION (CM/SEC)
≤3 MONTHS NORMAL 98 13.5
CONDITIONAL 268 12.7
ABNORMAL 196 13.4
>3, <6 MONTHS NORMAL 142 13.8
CONDITIONAL 84 13.8
ABNORMAL 17 14.1
ALL SUBJECTS -- 805 13.7