Table 2.
Comparison of calibrated blood oxygen level dependent functional magnetic resonance imaging (BOLD-fMRI) values between HIV+ and HIV− subjects.
| HIV+ Subjects (n=6) |
HIV− Controls (n=10) |
p value | Effect size |
|
|---|---|---|---|---|
| Mean ln Baseline CBF | 3.62 | 3.92 | 0.04 | −1.07 |
| Mean ln % Functional CBF change | 3.96 | 4.35 | 0.07 | −0.92 |
| Mean ln % Functional BOLD change |
−0.65 | 0.57 | <0.001 | −2.47 |
| Mean ln % Functional CMRO2 change |
2.99 | 2.96 | 0.71 | 0.19 |
| Mean ln M | −3.09 | −2.79 | 0.09 | −0.91 |
| Mean ln n | 0.75 | 1.38 | 0.006 | −1.63 |
ln= natural log
CBF= cerebral blood flow
CMRO2 = cerebral metabolic rate of oxygen consumption
M= maximum possible BOLD signal change
n= ratio of fractional changes in CBF to CMRO2