Table 4

Estimation Results for the Share of Provider Effects in Antibiotic Prescribing

Number of Prescriptions, Two-Way Fixed Effects Estimationa
All AntibioticsPenicillinsSecond-LineOther
Embedded Image 0.494***0.435***0.828***0.485***
(0.033)(0.034)(0.036)(0.072)
Event dummiesbYesYesYesYes
Observations7,789,9087,789,9087,789,9087,789,908
Groups (patients)1,371,6041,371,6041,371,6041,371,604
  • Notes: This table reports the average share of antibiotic prescribing differences between clinics that is attributable to provider practice style differences, the coefficient of Embedded Image. The term Δi denotes the difference in mean antibiotic prescribing between patient i’s assigned sets of physicians, and is estimated by Embedded Image, the leave-one-out estimator of antibiotic prescribing based on untreated patients. The term Dit represents the post-treatment indicator. Standard errors are calculated using a bootstrap with 50 repetitions at the patient level. ***p < 0.01.

  • aTwo-way fixed effects estimation with calendar year fixed effects and patient fixed effects.

  • bEvent dummies include an indicator for treatment onset (relative year 0) and post-treatment.