Statistically significant relationships between region and diagnostic testing
| Diagnostic test . | Northeast, % . | Southeast, % . | Southwest, % . | Midwest, % . | West, % . | χ2P . |
|---|---|---|---|---|---|---|
| RCV | 81.3 | 80.6 | 69 | 79.2 | 70.8 | .022 |
| ABG | 72.4 | 82.2 | 78.2 | 76.1 | 66.9 | .008 |
| LAP score | 59.5 | 55.4 | 47.1 | 55.3 | 43.5 | .018 |
| CT scan | 35.4 | 28.1 | 36.8 | 32.7 | 18.8 | .004 |
| Progenitor cell assay | 5.8 | 3.3 | 4.6 | 5.0 | 14.3 | < .001 |
| Diagnostic test . | Northeast, % . | Southeast, % . | Southwest, % . | Midwest, % . | West, % . | χ2P . |
|---|---|---|---|---|---|---|
| RCV | 81.3 | 80.6 | 69 | 79.2 | 70.8 | .022 |
| ABG | 72.4 | 82.2 | 78.2 | 76.1 | 66.9 | .008 |
| LAP score | 59.5 | 55.4 | 47.1 | 55.3 | 43.5 | .018 |
| CT scan | 35.4 | 28.1 | 36.8 | 32.7 | 18.8 | .004 |
| Progenitor cell assay | 5.8 | 3.3 | 4.6 | 5.0 | 14.3 | < .001 |
Each row represents the results of a Pearson χ2test computed on a contingency table for region and whether or not a respondent uses a diagnostic test. To conserve space, we present only the affirmative responses to our question and report results only for tests where we found statistically significant regional variation (P < .05).