Table 5. Results of the Pearson partial correlation analysis comparing the cerebrospinal fluid and internal jugular vein cross-sectional area variables, when controlling for age, BMI, hypertension, smoking & cardiovascular disease for the relapsing-remitting MS patients (n = 65).
| NF, r (p value) | NNF, r (p value) | NPF, r (p value) | PPV, r (p value) | PNV, r (p value) | |
|---|---|---|---|---|---|
| C7-T1 RIJV CSA | 0.143 (0.361) | -0.139 (0.375) | 0.256 (0.098) | 0.108 (0.489) | 0.044 (0.779) |
| C7-T1 LIJV CSA | -0.12 (0.444) | -0.133 (0.393) | 0.079 (0.613) | -0.042 (0.789) | -0.05 (0.748) |
| C5-C6 RIJV CSA | 0.109 (0.485) | -0.238 (0.124) | 0.351 (0.021)* | 0.067 (0.668) | 0.141 (0.366) |
| C5-C6 LIJV CSA | -0.150 (0.335) | -0.138 (0.377) | 0.065 (0.678) | -0.153 (0.327) | 0.043 (0.782) |
| C4 RIJV CSA | 0.204 (0.190) | -0.143 (0.361) | 0.300 (0.051) | 0.125 (0.424) | 0.187 (0.229) |
| C4 LIJV CSA | -0.226 (0.145) | -0.201 (0.196) | 0.090 (0.566) | 0.005 (0.974) | 0.000 (0.999) |
| C2-C3 right collateral CSA | -0.124 (0.428) | -0.192 (0.218) | 0.145 (0.352) | -0.083 (0.597) | 0.065 (0.679) |
| C2-C3 RIJV CSA | 0.169 (0.277) | -0.151 (0.332) | 0.288 (0.061) | 0.078 (0.620) | 0.179 (0.251) |
| C2-C3 LIJV CSA | -0.142 (0.362) | -0.071 (0.652) | -0.009 (0.954) | -0.010 (0.948) | 0.039 (0.802) |
| C2-C3 left collateral CSA | -0.157 (0.314) | -0.271 (0.079) | 0.217 (0.162) | -0.071 (0.649) | 0.149 (0.340) |
NF, net flow; NNF, net negative flow; NPF, net positive flow; PPV, peak positive velocity; PNV, peak negative velocity; RIJV, right internal jugular vein; LIJV, left internal jugular vein; CSA, cross sectional area.
* p values less than 0.05 considered statistical trends