Comparison of states with high and low numbers of interventional neuroradiologists
| No. of Interventional Neuroradiologist | P Value | ||
|---|---|---|---|
| ≥10 | <10 | ||
| No. of states | 16 | 29 | |
| Population* | 11,616,000 ± 7,738,000 | 2,730,550 ± 1,991,000 | <.001 |
| Population per interventional neuroradiologist | 662,000 ± 166,000 | 837,000 ± 413,000 | .05 |
| Population per institute | 1,164,000 ± 312,000 | 1,121,000 ± 461,000 | .7 |
Note.—Data are the mean ± standard deviation unless otherwise specified.
* Population is significantly greater in the group of states where ≥10 or more interventional neuroradiologists practice than the group of states where ≤10 practice (P < .001, Student t test).