Table 5.
Association between EHR (+) and Number of Advanced Imaging Examinations
| (1) | (2) | (3) | (4) | |
|---|---|---|---|---|
| Total Imaging | CT Scans | Ultrasound | MRI Scans | |
| Ambulance pts. (n = 9,933) | ||||
| EHR (+) | −0.0764 | −0.0747** | −0.0130 | 0.0019 |
| (0.0478) | (0.0248) | (0.00937) | (0.00943) | |
| [−0.17, 0.02] | [−0.12, −0.03] | [−0.03, 0.01] | [−0.02, 0.02] | |
| R 2 | .3670 | .3376 | .2035 | .1514 |
| Full sample (n = 43,914) | ||||
| EHR (+) | −0.0760*** | −0.0292*** | −0.0100* | 0.0018 |
| (0.0168) | (0.0080) | (0.0045) | (0.0036) | |
| [−0.04, −0.10] | [−0.01, −0.05] | [−0.001, −0.019] | [−0.005, 0.009] | |
| R 2 | .3690 | .2793 | .1953 | .1169 |
All models are adjusted for time of visit, location, age, sex, caseload, ICD9 codes, case complexity, insurance codes, zip codes of primary care physicians, attending physician, acuity, procedures, and admission status. Standard errors, clustered at the day‐site level, are in parentheses. *p < .05, **p < .01, ***p < .001. 95% CIs are in brackets.