Multivariable analysis of the impact of hospital characteristics on one-point increases of the CSC score
| Hospital-related factors in 2010 | OR | 95% CI | P value* |
| Hospital locations | |||
| MEA central | Ref. | ||
| MEA outlying | 1.42 | 0.76 to 2.65 | 0.269 |
| McEA | 0.82 | 0.36 to 1.86 | 0.632 |
| CSC score in 2010 | 0.82 | 0.75 to 0.90 | <0.001 |
| Academic hospital | 1.37 | 0.54 to 3.48 | 0.506 |
| DPC hospital | 0.77 | 0.41 to 1.42 | 0.397 |
| Number of beds | |||
| 1–99 | ref. | ||
| 100–299 | 1.16 | 0.37 to 3.66 | 0.794 |
| 300–499 | 1.68 | 0.56 to 5.10 | 0.358 |
| ≥500 | 3.9 | 1.17 to 13.00 | 0.027 |
| Annual stroke case volume | |||
| 1–99 | ref. | ||
| 100–199 | 1.62 | 0.64 to 4.07 | 0.305 |
| 200–299 | 2.41 | 0.89 to 6.49 | 0.083 |
| ≥300 | 2.74 | 0.99 to 7.54 | 0.051 |
| Number of stroke physician volume quartile | |||
| Q1 (0–3) | Ref. | ||
| Q2 (4–6) | 1.77 | 0.81 to 3.88 | 0.153 |
| Q3 (7–9) | 2.63 | 1.10 to 6.27 | 0.030 |
| Q4 (≥10) | 1.58 | 0.57 to 4.38 | 0.380 |
*P value: improvement versus no improvement hospitals.
CSC, comprehensive stroke centre; DPC, Diagnostic Procedure Combination; McEA, Micropolitan Employment Area; MEA, Metropolitan Employment Area.