The data are from an assay measuring lifespan in D.serrata The dataset is saved as a CSV file (i.e. values separated by commas). Each row corresponds to observations for one individual. The dataset has the following columns: 1) sex - The sex of the flies 2) genotype - The genotype ID 3) mated_non_mated - mated status as either mated or non-mated 4) density - holding density of the adult flies as either low, medium or high 5) vial - A vial number nested within genotype that records which vial adult flies were reared in. 6) individual - A unique identification code assigned to each fly. 7) days – lifespan of flies 8) censored – 1 if flies were included in the analysis, or zero if flies escaped during the lifespan assay and were excluded from the analysis