Table 3.
Full interaction model of Tobit regression results.a,b
| Variables | DVc, airtime (seconds; log transformed) | ||||||||||||
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1.1 | 1.2 | 1.3 | 1.4 | 1.5 | ||||||||
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All (SE) | P value | All (SE) | P value | All (SE) | P value | All (SE) | P value | All (SE) | P value | |||
| DOCTOREXPERT | −0.181 (0.070) | .01 | −0.117 (0.085) | .17 | 0.147 (0.104) | .16 | −0.197 (0.044) | <.001 | −0.035 (0.191) | .86 | |||
| GOVTEXPERT | 0.674 (0.084) | <.001 | 0.281 (0.133) | .04 | 0.798 (0.054) | <.001 | 0.940 (0.561) | .09 | 0.612 (0.011) | <.001 | |||
| POSITIVE | N/Ad | N/A | 0.267 (0.211) | .21 | N/A | N/A | N/A | N/A | N/A | N/A | |||
| NEGATIVE | N/A | N/A | N/A | N/A | 0.247 (0.057) | <.001 | N/A | N/A | N/A | N/A | |||
| NEUTRAL | N/A | N/A | N/A | N/A | N/A | N/A | −0.723 (0.235) | <.001 | N/A | N/A | |||
| MIXED | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.566 (0.266) | .03 | |||
| DOCTOREXPERT × GOVTEXPERT | −0.631 (0.281) | .03 | −0.667 (0.288) | .02 | −0.873 (0.230) | <.001 | −0.693 (0.353) | .05 | −0.819 (0.356) | .02 | |||
| DOCTOREXPERT × POSITIVE | N/A | N/A | 0.286 (0.424) | .50 | N/A | N/A | N/A | N/A | N/A | N/A | |||
| DOCTOREXPERT × NEGATIVE | N/A | N/A | N/A | N/A | −0.675 (0.148) | <.001 | N/A | N/A | N/A | N/A | |||
| DOCTOREXPERT × NEUTRAL | N/A | N/A | N/A | N/A | N/A | N/A | 0.344 (0.419) | .41 | N/A | N/A | |||
| DOCTOREXPERT × MIXED | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | −0.225 (0.474) | .64 | |||
| GOVTEXPERT × POSITIVE | N/A | N/A | 0.938 (0.084) | <.001 | N/A | N/A | N/A | N/A | N/A | N/A | |||
| GOVTEXPERT × NEGATIVE | N/A | N/A | N/A | N/A | −0.706 (0.356) | .05 | N/A | N/A | N/A | N/A | |||
| GOVTEXPERT × NEUTRAL | N/A | N/A | N/A | N/A | N/A | N/A | −1.080 (1.162) | .35 | N/A | N/A | |||
| GOVTEXPERT × MIXED | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A | 0.194 (0.831) | .82 | |||
aA set of control variables, including dummy variables for months and days, are included in the model.
b1.1: number of observations=564, log pseudolikelihood=−728.06, Akaike information criterion=1460.11; 1.2: number of observations=437, log pseudolikelihood=−536.41, Akaike information criterion=1076.82; 1.3: number of observations=437, log pseudolikelihood=−539.31, Akaike information criterion=1082.62; 1.4: number of observations=437, log pseudolikelihood=−533.23, Akaike information criterion=1070.47; 1.5: number of observations=437, log pseudolikelihood=−538.87, Akaike information criterion=1081.73.
cDV: dependent variable.
dN/A: not applicable.