### Mediator model

Call:
glm(formula = bili_bin ~ trt, family = binomial(link = "logit"), 
    data = data)

Coefficients:
            Estimate Std. Error z value Pr(>|z|)
(Intercept)  0.08577    0.38245   0.224    0.823
trt         -0.08577    0.24091  -0.356    0.722

(Dispersion parameter for binomial family taken to be 1)

    Null deviance: 382.49  on 275  degrees of freedom
Residual deviance: 382.36  on 274  degrees of freedom
AIC: 386.36

Number of Fisher Scoring iterations: 3

### Outcome model

Call:
glm(formula = spiders ~ trt + bili_bin + trt:bili_bin, family = poisson(link = "log"), 
    data = data)

Coefficients:
             Estimate Std. Error z value Pr(>|z|)   
(Intercept)  -1.66365    0.58664  -2.836  0.00457 **
trt          -0.07095    0.37184  -0.191  0.84867   
bili_bin      0.76153    0.67005   1.137  0.25574   
trt:bili_bin  0.08577    0.42433   0.202  0.83982   
---
Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1

(Dispersion parameter for poisson family taken to be 1)

    Null deviance: 198.14  on 275  degrees of freedom
Residual deviance: 183.51  on 272  degrees of freedom
AIC: 351.51

Number of Fisher Scoring iterations: 6

### Mediation analysis 
             est         se           Z         p      lower     upper
cde   0.05894618 0.38707150  0.15228757 0.8789601 -0.6997000 0.8175924
pnde -0.01200124 0.21676196 -0.05536598 0.9558469 -0.4368469 0.4128444
tnie -0.02322470 0.06597255 -0.35203574 0.7248115 -0.1525285 0.1060791
tnde -0.01422517 0.21844471 -0.06512022 0.9480783 -0.4423689 0.4139186
pnie -0.02100077 0.05943847 -0.35331944 0.7238490 -0.1374980 0.0954965
te   -0.03522593 0.22678973 -0.15532420 0.8765657 -0.4797256 0.4092738
pm    0.65534317 4.15069982  0.15788739 0.8745455 -7.4798790 8.7905653
      exp(est) exp(lower) exp(upper)
cde  1.0607181  0.4967343   2.265040
pnde 0.9880705  0.6460704   1.511110
tnie 0.9770429  0.8585344   1.111910
tnde 0.9858755  0.6425125   1.512734
pnie 0.9792182  0.8715361   1.100205
te   0.9653873  0.6189532   1.505724
pm          NA         NA         NA

Evaluated at:
avar: trt
 a1 (intervened value of avar) = 2.3
 a0 (reference value of avar)  = 1.1
mvar: bili_bin
 m_cde (intervend value of mvar for cde) = 1.4
cvar: 
 c_cond (covariate vector value) = 

Note that effect estimates can vary over m_cde and c_cond values when interaction = TRUE.