Table 4.
Univariable and multivariable logistic regression analysis (OR (95% CI)) of candidate predictors of disagreement between ED adjudicated diagnosis and NACRS coding among patients with a clear final diagnosis documented
| TIA NACRS main-position algorithm (N=60) |
TIA NACRS any-position algorithm (N=48) |
Cerebral ischaemia NACRS main-position algorithm (N=65) |
||||
| Univariable | Multivariable | Univariable | Multivariable | Univariable | Multivariable | |
| Age | 1.00 (0.98 to 1.02) | – | 1.01 (0.99 to 1.03) | – | 1.01 (0.99 to 1.02) | – |
| Male sex | 1.79 (1.01 to 3.16) | 2.09 (1.15 to 3.80) | 1.28 (0.69 to 2.35) | – | 1.21 (0.71 to 2.06) | – |
| ABCD2≥4 | 0.89 (0.48 to 1.64) | – | 0.76 (0.40 to 1.47) | – | 1.01 (0.56 to 1.85) | – |
| Ongoing symptoms in ED | 0.32 (0.18 to 0.57) | 0.37 (0.20 to 0.66) | 0.46 (0.25 to 0.84) | 0.46 (0.25 to 0.84) | 0.73 (0.43 to 1.25) | – |
| Vascular risk factors | – | – | – | |||
| 0 | Ref | Ref | Ref | |||
| 1 | 0.89 (0.39 to 2.04) | 0.66 (0.28 to 1.57) | 0.69 (0.30 to 1.59) | |||
| 2 or more | 1.25 (0.65 to 2.40) | 0.74 (0.37 to 1.46) | 1.23 (0.66 to 2.30) | |||
| Neurovascular imaging in ED | 0.58 (0.21 to 1.64) | – | 0.44 (0.16 to 1.25) | – | 0.87 (0.29 to 2.65) | – |
| Abnormal neurovascular imaging | 0.74 (0.40 to 1.36) | – | 0.67 (0.34 to 1.34) | – | 0.78 (0.43 to 1.40) | – |
| Neurology consult | 0.31 (0.17 to 0.56) | 0.36 (0.19 to 0.68) | 0.96 (0.44 to 2.08) | – | 0.32 (0.18 to 0.58) | 0.32 (0.18 to 0.58) |
| Weekend | 0.94 (0.46 to 1.90) | – | 0.97 (0.45 to 2.09) | – | 0.64 (0.30 to 1.35) | |
| Night shift | 0.86 (0.50 to 1.49) | – | 1.17 (0.64 to 2.14) | – | 0.85 (0.50 to 1.45) | |
Bold indicates p<0.05.
ABCD2, Age, Blood pressure, Clinical, Duration, Diabetes; ED, emergency department; NACRS, National Ambulatory Care Reporting System; TIA, transient ischaemic attack.