Table 6.
Robustness check results (for column 1, sample is the subsample of physicians who had at least one review on both websites in June 2014, and dependent variable is Ln(Houtpatient_carei)-Ln(Goutpatiet_carei). For column 2, sample is the subsample of physicians who had new reviews posted on both websites between June and September 2014).
| Variable | Model 1 Coefficient (robust standard error) | P value | Model 2 Coefficient (robust standard error) | P value |
| HTime | 0.104 (0.064) | .01 | — | — |
| GTime | 0.035 (0.034) | .22 | — | — |
| LnHwritten_Consultation | –0.035 (0.205) | .46 | 0.189 (0.020) | .01 |
| LnHtelephone_Consultation | 0.237 (0.204) | .03 | 0.067 (0.012) | .03 |
| Hrating | 0.008 (0.033) | .43 | 0.001 (0.002) | .43 |
| LnHreview | 0.219 (0.278) | .04 | 0.738 (0.201) | <.001 |
| Grating | –0.023 (0.143) | .04 | 0.002 (0.024) | .06 |
| LnGreview | –1.083 (0.143) | <.001 | –0.205 (0.121) | <.001 |
| LnHwritten_Consultation*LnHreview | –0.105 (0.044) | <.001 | –0.988 (0.273) | .009 |
| LnHtelephone_Consulation*LnHreview | –0.006 (0.038) | .03 | –0.105 (0.023) | .05 |
| LnHwritten_Consultation*Grating | 0.004 (0.022) | .04 | — | — |
| LnHwritten_Consultation*LnGreview | 0.027 (0.032) | .32 | 0.870 (0.556) | .03 |
| LnHtelephone_Consulation*Grating | 0.012 (0.019) | .03 | — | — |
| Lntelephone_Consulation*LnGreview | –0.015 (0.027) | .32 | 0.443 (0.154) | .03 |
| Adjusted R2 | 0.613 | — | 0.408 | — |
| N | 400 | — | 371 | — |