Table 2.
Biochemical characteristics
| Negative (N = 1015) | Positive (N = 101) | p-value* | |
|---|---|---|---|
| Days to sample—median [Q1; Q3] |
9 [6; 13] (N = 1015) |
10 [7; 16] (N = 101) |
0.001 |
| CSF WBC—median [Q1; Q3] |
72 [22; 223] (N = 971) |
111 [24; 562] (N = 98) |
0.03 |
| CSF RBC—median [Q1; Q3] |
11,200 [3500; 27,500] (N = 966) |
6,400 [1300; 19,800] (N = 97) |
0.002 |
| CSF glucose—median [Q1; Q3] |
4.3 [3.7; 5] (N = 1005) |
4.1 [3.4; 4.8] (N = 101) |
0.02 |
| CSF/plasma glucose—median [Q1; Q3] |
0.58 [0.49; 0.67] (N = 871) |
0.53 [0.45; 0.64] (N = 84) |
0.02 |
| CSF protein—median [Q1; Q3] |
0.46 [0.27; 0.75] (N = 1009) |
0.48 [0.24; 0.81] (N = 101) |
0.47 |
| CSF neutrophil granulocytes—median [Q1; Q3] |
25 [5; 110] (N = 828) |
60 [10; 323] (N = 82) |
0.002 |
| CSF NG/WBC—median [Q1; Q3] |
0.33 [0.12; 0.54] (N = 813) |
0.40 [0.16; 0.70] (N = 82) |
0.007 |
| CSF WBC/RBC—median [Q1; Q3] |
0.01 [0.0; 0.02] (N = 938) |
0.02 [0.0; 0.08] (N = 96) |
< 0.001 |
| Blood CRP—median [Q1; Q3] |
18 [7; 45] (N = 906) |
17 [8; 47] (N = 83) |
0.99 |
CRP C-reactive protein, CSF cerebrospinal fluid, N number, NG neutrophil granulocytes, RBC red blood cell count, Q1 first quartile, Q3 third quartile, WBC white blood cell count
*p-values are found using Mann-Whitney U-test