```r
> m1
GLM estimation, family = quasipoisson, Dep. Var.: t1
Observations: 3,598,784
Fixed-effects: block: 13,144, day: 7
Standard-errors: Clustered (block)
Estimate Std. Error t value Pr(>|t|)
conditionC -0.005141 0.004249 -1.209941 0.22632
t0SC 0.163234 0.000243 672.433922 < 2.2e-16 ***
conditionC:t0SC 0.000162 0.000299 0.540683 0.58874
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Squared Cor.: 0.597615
> m1.1 <- feglm(t1 ~ conditionC + t0SC | block + day, d3, family = "quasipoisson", cluster = "block")
NOTE: 59/0 fixed-effects (2,275 observations) removed because of only 0 outcomes.
> m1.1
GLM estimation, family = quasipoisson, Dep. Var.: t1
Observations: 3,598,784
Fixed-effects: block: 13,144, day: 7
Standard-errors: Clustered (block)
Estimate Std. Error t value Pr(>|t|)
conditionC -0.003118 0.003309 -0.942459 0.34598
t0SC 0.163234 0.000243 672.416223 < 2.2e-16 ***
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Squared Cor.: 0.597614
```