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Table 1 Effects of protein (P), carbohydrate (C), and their squares and product on body size in females and males

From: Sex-specific plasticity and the nutritional geometry of insulin-signaling gene expression in Drosophila melanogaster

Sexa   C P C2 P2 C × P
Female βb − 0.0044 0.0068 0.00001 − 0.00003 0.00001
  Χ2 17.04*** 0.02NS 21.45*** 36.25*** 4.80*
Male βb   0.0081   − 0.00004  
  Χ2   11.408***   11.513**  
  1. Type III Wald Chi-square test with associated P-values: NS non-significiant, P > 0.05, *P < 0.05, **P < 0.01, ***P < 0.001
  2. aFor each sex, we fitted a linear mixed effect orthogonal polynomial regression with replicate vial as a random factor and removed non-significant parameters
  3. bParameter values for the response surface are for the non-orthogonal polynomial regression to facilitate interpretation
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