Table 2. Trends in ED Dwell Time and Troponin to Disposition Decision Time .
| Population | Unadjusted | Adjusteda | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Difference in time in ED, mean (95% CI), min/mo | P valueb | Difference in time from troponin to disposition, mean (95% CI), min/mo | P valueb | Difference in time in ED, mean (95% CI), min/mo | P valueb | Difference in time from troponin to disposition, mean (95% CI), min/mo | P valueb | |||||
| Preintervention | Postintervention | Preintervention | Postintervention | Preintervention | Postintervention | Preintervention | Postintervention | |||||
| Total cohort (n = 31 543) | −1.09 (−2.81 to 0.64) | −4.69 (−9.05 to −0.33) | .007 | 1.72 (1.08 to 2.36) | 0.37 (−1.25 to 1.99) | .007 | −0.71 (−2.49 to 1.07) | −10.28 (−16.31 to −4.25) | <.001 | 1.78 (1.16 to 2.4) | −0.39 (−2.5 to 1.72) | .004 |
| Chest pain subcohort (n = 12 845) | −1.34 (−3.68 to 1) | −4.76 (−10.68 to 1.16) | .06 | 1.94 (1.01 to 2.87) | −0.82 (−3.17 to 1.54) | <.001 | −1.2 (−3.6 to 1.2) | −9.5 (−17.68 to −1.31) | .005 | 2.03 (1.09 to 2.97) | −1.48 (−4.68 to 1.72) | .002 |
| Subcohort with MI excluded (n = 25 611) | −0.75 (−2.55 to 1.05) | −3.22 (−7.86 to 1.42) | .09 | 1.97 (1.26 to 2.68) | −0.22 (−2.04 to 1.6) | <.001 | −0.31 (−2.16 to 1.53) | −7.61 (−14.1 to −1.13) | .002 | 2.06 (1.38 to 2.73) | −1.15 (−3.54 to 1.24) | <.001 |
| Chest pain and MI excluded subcohort (n = 10 917) | −0.79 (−3.13 to 1.55) | −3.06 (−9.06 to 2.95) | .23 | 2.14 (1.14 to 3.14) | −1.47 (−4.04 to 1.1) | <.001 | −0.6 (−2.97 to 1.77) | −6.69 (−15.02 to 1.64) | .045 | 2.17 (1.16 to 3.18) | −2.16 (−5.71 to 1.39) | .001 |
a
Adjusted for age, race, ethnicity, and financial class.
b
P for interaction: month × intervention.