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Table 3 Model summary from the linear mixed effect model utilized to determine whether dominance rank index was correlated to cortisol concentrations, controlling for potential effects of body weight, habituation (measurement), and housing group

From: Repeatability of endocrine traits and dominance rank in female guinea pigs

Fixed effects Estimate SE df t value p
Intercept   556.109 87.590 59.815 6.349  
Sample Responsiveness 1 h 894.135 154.773 11.149 5.777  < 0.001
Responsiveness 2 h 1338.281 179.651 10.783 7.449  < 0.001
Rank    − 400.137 315.970 58.673  − 1.266 0.210
Sample * rank Responsiveness 1 h  − 259.510 536.034 25.732  − 0.484 0.632
Responsiveness 2 h  − 122.233 606.082 26.501  − 0.202 0.842
Body weight   0.451 0.951 29.957 0.474 0.639
Measurement   70.977 91.711 47.019 0.774 0.443
Housing group   175.618 97.352 27.083 1.804 0.082
  1. Bold indicates significant terms (p < 0.05); italics indicates trend (0.05 ≤ p < 0.1). N = 72 observations (12 individuals, two measurements of three samples each)