TABLE 2.
Effects of nudge letters versus the control group for the full sample and by provider type
| Overall | By provider type | |||
|---|---|---|---|---|
| MD/DO | NP | PA | ||
| Average treatment effects by treatment arm | ||||
| Compensation, no pro‐social letter | 0.52 | 1.01 | 0.05 | −4.00 |
| No compensation, pro‐social letter | 2.3 | 2.44 | 4.41 | −3.04 |
| Compensation, pro‐social letter | 4.12** | 4.57* | 7.39* | −5.01 |
| Response rate in control group | 8.67 | 6.26 | 11.35 | 10.42 |
Note: Table shows estimated effects of letter types in responses per 1000 providers. All estimates are adjusted for county (randomization strata) fixed effects. Effects in the full sample (first “Overall” column) are additionally adjusted for provider type. One‐sided p‐values: *p < 0.10; **p < 0.05.
Abbreviations: DO, Doctor of Osteopathy; MD, Doctor of Medicine; NP, Nurse Practitioner; PA, Physician Assistant.
Source: Authors' analysis.