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Table 1 Importance of litter effects on body weight and behavioural tests

From: Improving basic and translational science by accounting for litter-to-litter variation in animal models

Variable

Reduction in σ ε 2

P-value

Locomotor activity

61%

<0.001

Body weight

50%

0.003

Marbles buried

38%

0.045

Anxiety (open field)

35%

0.0504

Grooming

23%

0.116

  1. The p-value tests whether the litter-to-litter variation was significantly greater than zero. σ ε 2 is the residual (unexplained) variation.