Table 2.
Odds and potential confounders of successful LP
| Factors | LP success rate | Unadjusted OR | Adjusted OR* |
|---|---|---|---|
| Completed assessment | |||
| No | 103 (35.0) | (Reference) | (Reference) |
| Yes | 174 (40.2) | 1.25 (0.92 to 1.70) | 0.85 (0.60 to 1.20) |
| Specialty | |||
| Paediatrics (n=600) | 224 (37.3) | (Reference) | (Reference) |
| EM (n=74) | 36 (48.6) | 1.59 (0.98 to 2.58) | 1.29 (0.74 to 2.24) |
| Med/Peds (n=44) | 16 (36.4) | 0.96 (0.51 to 1.81) | 0.98 (0.48 to 1.99) |
| Location of LP | |||
| Emergency department (n=334) | 141 (42.2) | (Reference) | (Reference) |
| PICU (n=13) | 7 (53.8) | 1.60 (0.53 to 4.86) | 2.23 (0.68 to 7.33) |
| NICU (n=164) | 54 (32.9) | 0.67 (0.45 to 0.99)† | 0.97 (0.56 to 1.67) |
| Inpatient floor (n=189) | 68 (36.0) | 0.77 (0.53 to 1.11) | 1.04 (0.64 to 1.69) |
| LP holder | |||
| Technician (n=189) | 88 (46.6) | (Reference) | (Reference) |
| Nurse (n=395) | 143 (36.2) | 0.65 (0.46 to 0.93)† | 0.68 (0.43, 1.06) |
| Resident (n=64) | 21 (32.8) | 0.56 (0.31 to 1.02) | 0.55 (0.27 to 1.15) |
| Fellow or attending (n=49) | 16 (32.7) | 0.56 (0.29 to 1.08) | 0.50 (0.23 to 1.08) |
| Age of patient | |||
| ≤24 days (n=366) | 132 (36.1) | (Reference) | (Reference) |
| >24 days (n=360) | 145 (40.0) | 1.20 (0.89 to 1.61) | 0.94 (0.66 to 1.34) |
Data are expressed as N (%).
*Adjusted ORs calculated using mixed-effects, binary logistic regression with success as dependent variable and adjusting for assessment, specialty, location of LP, LP holder and age of patient (dichotomous) while accounting for intersite variances.
†p<0.05.
EM, emergency medicine; LP, infant lumbar puncture; Med/Peds, medicine and paediatrics; NICU, neonatal intensive care unit; PICU, paediatric intensive care unit.