Table 1.
Baseline characteristics in shunt responders and non-responders measured before tap test.
| Variables | responders (IQR) | non-responders(IQR) | p | |
|---|---|---|---|---|
| 1 | Number of patients | 80 | 20 | |
| 2 | Male/Female | 44/36 | 14/6 | NS |
| 3 | Age (years)* | 75(71-78) | 75(71.2-78.5) | NS |
| 4 | Evans index (%)* | 35(33-38) | 34.6(32.7-38) | NS |
| 5 | CSFP(cmH20)* | 13(9-15) | 12(8-12.8) | < 0.05 |
| 6 | GS-Gait-pre* | 2(2-3) | 2(2-3) | NS |
| 7 | GS-Cogn-pre* | 2(1-3) | 2(1-3.7) | NS |
| 8 | GS-Urin-pre* | 2(1-3.7) | 2.1(1.4) | NS |
| 9 | GS-Total-pre* | 6(4-9.7) | 6(4-9.2) | NS |
| 10 | TUG-pre (sec)* | 19.5(15-26.7) | 20(18.2-27) | NS |
| 11 | MMSE-pre* | 22.5(15-25.7) | 25(18.2-27) | NS |
| 12 | SAE (patient numbers) | 7 | 8 | < 0.005 |
| Pneumonia | 0 | 3 | ||
| Malignancy | 1 | 1 | ||
| Vascular events | 3 | 1 | ||
| Subdural effusion | 1 | 0 | ||
| Surgery-related** | 0 | 2 | ||
| Femoral fracture | 2 | 1 | ||
Abbreviations: IQR: interquartile range, CSFP: cerebrospinal fluid pressure at lumbar tap, GS-Gait-pre: iNPH grading scale for gait pre tap test, GS-Cogn-pre: iNPH grading scale for cognition pre tap test, GS-Urin-pre: iNPH grading scale for urinary function pre tap test, GS-Total-pre: sum of three grading scales, p:probability, TUG-pre: timed up-and-go test, MMSE: Mini-Mental State Examination, SAE: severe adverse events. *: median (25% and 75% IQR),:**: shunt malfunction and bowel injury