|
Outcome (dead or alive)
|
Coef.
|
SE
|
z
|
P > |z|
|
|---|
|
Fixed effects
|
|
Trial
|
|
2
|
1.64
|
0.27
|
6.04
|
<0.001
|
|
Treatment
|
|
2
|
3.15
|
0.93
|
3.37
|
0.001
|
|
3
|
−1.76
|
0.99
|
−1.78
|
0.075
|
|
Trial and treatment interaction*
| | | |
<0.001
|
|
Random effect
|
Estimate
|
SE
|
|---|
|
Experimental unit
|
2.16
|
0.95
|
|
Probability ≥ chibar2 ≥ 0.001
| | |
- Two trials of 18 experimental units with three treatment groups (6 units per treatment). Treatment groups were: Group 1: Oysters in the open environment (reference), Group 2: Oysters in cage with crabs (positive control), and Group 3: Oysters in cage with no crabs (negative control). Trial 1 (reference)—29 July to 12 August, Trial 2—14 August to 28 August 2015
- * Overall interaction P value obtained with a Likelihood ratio test (chi2 = 97.89)
