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Table 2 Result of the models for gut bacterial composition personalization. Personalization expressed as minimum dissimilarity Bray-Curtis (BC) and weighted unifrac (Wunifrac) (n = 543 samples). Season is marginally significant in one model and significant in interaction with age in the other

From: Aging gut microbiota of wild macaques are equally diverse, less stable, but progressively personalized

  Fixed effects Levels Estimate SE CIlower CIupper p
BC Intercept   −0.04 0.04 −0.11 0.03 -
  Age1   0.03 0.01 0.01 0.06 0.02
  Season2       0.06
   M (ref L) 0.03 0.04 −0.05 0.09  
   R (ref L) −0.06 0.04 −0.12 0.01  
  Group3       0.5
   MST (ref MOT) 0.03 0.03 −0.02 0.09  
   SST (ref MOT) 0.04 0.04 −0.04 0.11  
  Gestation  0.08 0.04 0.15 0.00 0.05
Dispersion parameter Intercept   3.98 0.07 3.87 4.12 -
  Age1   0.38 0.07 0.25 0.50 < 0.001
Wunifrac Intercept   −1.68 0.03 −1.74 −1.62 -
  Age1   −0.02 0.02 −0.05 0.02 -
  Season2       -
   M (ref L) 0.11 0.03 0.05 0.18  
   R (ref L) 0.06 0.03 0.00 0.11  
  Group3       0.6
   MST (ref MOT) 0.01 0.02 −0.03 0.05  
   SST (ref MOT) 0.03 0.03 −0.02 0.08  
  Gestation4   −0.05 0.03 −0.11 0.01 0.08
  Age1 × season2       0.04
   Age × M (ref L) 0.01 0.03 0.04 0.07  
   Age × R (ref L) 0.06 0.02 0.02 0.10  
Dispersion parameter Intercept   4.99 0.07 4.89 5.15  
  Age1   0.28 0.07 0.17 0.43 < 0.001
  1. 1Z-transformed to a mean of 0 and sd of 1; mean and sd of age on the original scale are 12.44 and 5.79 years, respectively. 2Categorical predictor with 3 levels: lean, intermediate, and rich, with the reference level set to the lean season. 3Categorical predictor with 3 levels MOT, MST, SST, with the reference level sets to group MOT. 4Binary predictor with reference sets to non-gestating