Table 2.

Body mass and organ masses in young and old virgin California mice by sex. P values are for main effect of age group from one-way ANOVA (body mass) or ANCOVA (organ masses). Values are presented as mean ± SEM or mean with lower and upper confidence interval (for log-transformed data) and are reported in grams; bolded P-values are <0.05.

Sex	Variable	Young	Old	P	Covariates
Females		(n=10)	(n=9)
	body mass - start	43.24 ± 2.02	49.69 ± 3.46	0.117	--
	body mass - end	42.36 ± 2.10	46.47 ± 3.56	0.323	--
	total ovarya	0.0111 ± 0.0012	0.0138 ± 0.0013	0.156	body mass - end
	total adrenalb	0.0171 ± 0.0013	0.0185 ± 0.0014	0.499	body mass - end
	uterusc	0.0421 (−1.47, −1.28)	0.0635 (−1.30, −1.10)	0.017	body mass - end
Males		(n=22)	(n=21)
	body mass - start	39.66 ± 1.54	53.39 ± 1.44	<0.001	--
	body mass - end	41.53 ± 1.68	53.67 ± 1.74	<0.001	--
	r. testisd	0.1977 ± 0.0210	0.1428 ± 0.0202	0.133	body mass - end, group*body mass
	r. adrenale	0.0097 (−2.10, −2.01)	0.0087 (−2.06, −1.97)	0.229	body mass - end

^abody-mass-corrected averages at body mass of 44.61 g

^bbody-mass-corrected averages at body mass of 44.31 g

^cback-transformed body-mass-corrected averages at body mass of 44.31 g

^dbody-mass-corrected averages at body mass of 47.46 g

^eback-transformed body-mass-corrected averages at body mass of 47.46 g