Table 7

Multivariate logistic regression analysis showing relationship of distance traveled to outcomes among transferred patients treated at a single center

VariableOR (95% CI)p Value
Intracerebral hemorrhage
IV tPA+distance
 IV tPA0.97 (0.20 to 4.89)0.965
 Distance1.07 (0.85 to 1.31)0.525
Time to intervention+distance
 Time to intervention1.03 (1.00 to 1.05)*0.042
 Distance1.11 (0.95 to 1.29)*0.184
ASPECTS+distance
 ASPECTS0.61 (0.31 to 1.14)0.120
 Distance1.00 (0.98 to 1.02)0.804
TICI ≥2b+distance
 TICI ≥2b2.87 (1.66 to 9.01)0.009
 Distance1.15 (0.98 to 1.36)*0.077
Death
Age+distance
 Age1.09 (1.03 to 1.18)*0.001
 Distance1.29 (1.08 to 1.61)*0.004
NIHSS+distance
 NIHSS1.06 (0.95 to 1.20)*0.304
 Distance1.23 (1.03 to 1.51)*0.017
Basilar+distance
 Basilar6.07 (0.90 to 41.60)0.063
 Distance1.27 (1.07 to 1.56)*0.005
IV tPA+distance
 IV tPA1.13 (0.32 to 4.16)0.852
 Distance1.02 (1.01 to 1.05)0.014
Time to intervention+distance
 Time to intervention0.99 (0.95 to 1.02)0.467
 Distance1.26 (1.07 to 1.54)0.006
ASPECTS+distance
 ASPECTS1.31 (0.77 to 2.36)0.327
 Distance1.29 (1.08 to 1.59)0.004
TICI ≥2b+distance
 TICI ≥2b2.33 (0.62 to 8.42)0.205
 Distance1.25 (1.06 to 1.54)*0.009
90-Day mRS >2
Age1.02 (0.99 to 1.07)0.225
Distance1.09 (0.89 to 1.41)0.424
NIHSS1.15 (1.00 to 1.36)0.044
Dominant1.45 (0.39 to 5.32)0.572
IV tPA1.35 (0.32 to 5.77)0.680
Time to Intervention1.02 (0.99 to 1.06)0.171
ASPECTS0.95 (0.54 to 1.69)0.862
TICI ≥2b0.11 (0.01 to 0.58)0.007
Intracerebral hemorrhage4.31 (0.43 to 112.70)0.231
  • Significant p values are shown in bold.

  • *Unit OR, indicating the increase in OR for every 1 unit increase in age, NIHSS, and ASPECTS and every 10 mile increase in distance traveled.

  • ASPECTS, Alberta Stroke Program Early CT Score; mRS, modified Rankin Scale; NIHSS, National Institutes of Health Stroke Scale; TICI, Thrombolysis in Cerebral Infarction; tPA, tissue plasminogen activator.