Table 2 Pairwise comparisons of levels of the fixed effect “condition” for reduced Cox mixed effects regression model assessing latency to open the door (i.e. model with interactions omitted; week 1).

From: Pigs solve a cooperative task without showing a clear understanding of the need for a partner

Comparison

Estimate

SE

Z

P

ASO – ILL

0.770

0.292

2.637

0.064

ASO – JLL

 − 0.093

0.292

 − 0.317

0.998

ASO – LUE

 − 0.370

0.282

 − 1.308

0.686

ASO – LUF

0.351

0.291

1.207

0.747

ILL – JLL

 − 0.862

0.298

 − 2.888

0.032

ILL – LUE

 − 1.139

0.293

 − 3.881

0.001

ILL – LUF

 − 0.418

0.290

 − 1.442

0.600

JLL – LUE

 − 0.277

0.297

 − 0.933

0.884

JLL – LUF

0.444

0.297

1.494

0.566

LUE – LUF

0.721

0.290

2.490

0.093

  1. ASO asocial condition, JLL joint log-lift condition, ILL individual log-lift condition, LUE log up – empty condition, LUF log up – full condition, SE standard error. P-values showing significance or a trend are formatted in bold.
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