Table 1.
Participant demographics and procedure-related conditions
| LP without PLPH (n=86) | LP with PLPH (n=30) | Univariate OR (95% CI) | P-value | Multivariate OR (95% CI) | P-value | |
|---|---|---|---|---|---|---|
| Age (mean, SD) at LP | 28.7(7.05) | 27.9(7.35) | 0.98(0.93–1.05) | 0.600 | ||
| Sex, n(%) | ||||||
| Male(Ref) | 84(98%) | 28(93%) | 1.00 | 0.275 | ||
| Female | 2(2%) | 2(7%) | 3.00(0.40–22.30) | |||
| Body mass index mean(SD) | 21.8(3.02) | 20.9(2.56) | 0.89(0.76–1.05) | 0.161 | ||
| Volume of CSF collected, n(%) | ||||||
| 10 mL(Ref) | 55(64%) | 28(93%) | 1.00 | 0.002 | 0.17 | 0.024 |
| 20 mL | 31(36%) | 2(7%) | 0.13(0.03–0.57) | (0.04–0.79) | ||
| Type of needle useda, n(%) | ||||||
| Cutting edge(Ref) | 7(8%) | 8(29%) | 1.00 | 0.010 | 0.33 | 0.058 |
| Atraumatic | 79(92%) | 20(71%) | 0.22(0.07–0.68) | (0.10–1.04) | ||
| Multi-procedures on the same day, n(%) | ||||||
| No(Ref) | 60(70%) | 21(70%) | 1.00 | 0.981 | ||
| Yes | 26(30%) | 9(30%) | 0.99(0.40–2.45) | |||
| LP at baseline, n(%) | ||||||
| No(Ref) | 23(27%) | 4(13%) | 1.00 | 0.134 | ||
| Yes | 63(73%) | 26(87%) | 2.37(0.75–7.54) |
LP: lumbar puncture; PLPH: post-lumbar puncture headaches.
a
Two LP records(both at week 0) were excluded due to uncertaint type of needle used (n=114).