Table 1 Models using rank and age to predict face redness, face luminance, scrotal redness scrotal luminance, and testosterone in male rhesus macaques, Macaca mulatta, living on Cayo Santiago, Puerto Rico.

From: Facial and genital color ornamentation, testosterone, and reproductive output in high-ranking male rhesus macaques

Model

p Value model

AIC

R2

Significant effect

Face Redness ~ Age + Rank

0.1331

 − 319.879

0.1827

Age (+)

Face Luminance ~ Age + Rank

0.1788

 − 244.717

0.1645

Age (−)

Scrotal Redness ~ Age + Rank

0.04591

 − 284.534

0.2483

Age (+)

Scrotal Luminance ~ Age + Rank

0.009823

 − 209.346

0.3245

Age (−)

Log(T) ~ Age + Rank

0.3097

 − 242.9525

0.06436

None

  1. Significant p-values are in bold.
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