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. 2024 Jul 11;12:e17565. doi: 10.7717/peerj.17565

Table 1. Post-hoc pairwise comparisons using chi-squared tests for given probabilities (0.25) of each of the four foods consumed first across the food preference trials.

Food Frequency of being consumed first Expected frequency Chi-square value P value
Day 5 trial
Bread 0 6.25 8.33 0.016
Cat food 3 6.25 2.25 0.53
Fish 17 6.25 24.65 <0.001
Mussels 5 6.25 0.33 1
Day 10 trial
Bread 1 6.5 6.21 0.051
Cat food 2 6.5 1.28 1
Fish 13 6.5 8.67 0.013
Mussels 8 6.5 0.46 1
Day 15 trial
Bread 2 6 3.56 0.24
Cat food 1 6 5.56 0.074
Fish 12 6 8 0.019
Mussels 9 6 2 0.63
Day 35 trial
Bread 0 3.25 4.33 0.015
Cat food 2 3.25 0.64 1
Fish 8 3.25 9.25 0.009
Mussels 3 3.25 0.03 1

Note:

Significant terms (P value < α = 0.05) are highlighted in bold.