Traumatic second LP as per ≥500 RBC/μL, OR (95% CI) | p-value | Traumatic second LP as per ≥10,000 RBC/μL, OR (95% CI) | p-value | |
---|---|---|---|---|
First LP | ||||
No TLP | Reference | n/a | Reference | n/a |
TLP ≥500 RBC/μL | 7.5 (5.7–10.0) | <0.0001 | 7.5 (5.0–11.9) | <0.0001 |
TLP ≥10,000 RBC/μL | 26.1 (18.3–37.3) | <0.0001 | 40.7 (26.7–63.9) | <0.0001 |
Time between successive LP procedures | ||||
0–1 day | 10.3 (6.9–15.6) | <0.0001 | 14.2 (6.6–30.8) | <0.0001 |
2–7 days | 4.2 (2.9–5.9) | <0.0001 | 8.1 (3.8–17.8) | <0.0001 |
8–30 days | 0.9 (0.6–1.4) | 0.89 | 2.1 (0.8–5.2) | 0.11 |
31–365 days | Reference | n/a | Reference | n/a |
Patient's age category | ||||
18–29 years | Reference | n/a | Reference | n/a |
30–49 years | 1.8 (1.1–3.1) | 0.022 | 2.0 (0.9–4.4) | 0.08 |
50–64 years | 2.1 (1.3–3.5) | 0.004 | 2.5 (1.2–5.4) | 0.015 |
65–74 years | 1.8 (1.1–3.0) | 0.028 | 1.9 (0.9–4.0) | 0.11 |
≥75 years | 1.8 (1.0–3.1) | 0.042 | 2.0 (0.9–4.6) | 0.10 |
LP = lumbar puncture; OR = odds ratio; RBC = red blood cells; TLP = traumatic lumbar punture.