Table 2.

Comparison of total spectral power (0.005–0.15 Hz) and relative spectral power (with regard to total power) of the resting skin blood flow motion frequency bands in children with sickle cell (SS) disease compared with control children

Spectral power band	SS disease	Control
VI (0.005–0.0085 Hz)	0.14 (0.13–0.17)	0.12 (0.10–0.20)
V (0.0085–0.02 Hz)	0.24 (0.23–0.28)	0.24 (0.20–0.30)
IV (0.02–0.05 Hz)	0.27 (0.26–0.30)	0.28 (0.25–0.32)
III (0.05–0.15 Hz)	0.30 (0.28–0.35)	0.28 (0.25–0.36)
Total power (0.005–0.15 Hz)	213 (106–393)	312 (69– 792)

Results are expressed as medians (95% confidence interval) for n= 65 SS disease and n= 20 control children. No significant differences were observed in any frequency SS disease versus control.