Mix effect Cox proportional hazard models for survivorship in SIR2 CR/DR experiment.

Significance codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘†’.Model 0: SIR2 (Note 1).Model 1: SIR2 + diet(Note 2).Model 2: SIR2 + diet + SIR2|diet.Model 3: SIR2 + diet + SIR2|diet + mito.Model 4: SIR2 + diet + SIR2|diet + mito|species+ species.Model 5a: SIR2 + diet + SIR2|diet + SIR2|(mito|species + species) + mito|species + species.Model 5b: SIR2 + diet + SIR2|diet + diet|(mito|species + species) + mito|species + species.Model 6: SIR2 + diet + SIR2|diet + SIR2|(mito|species + species) + mito|species + species + replicate.Note 1: fixed effect, such as diet, is show with underline.Note 2: diet is modeled as an ordinal variable rather than a nominal variable.