Food supplements increase adult tarsus length, but not growth rate, in an island population of house sparrows ( Passer domesticus )

Table 5 Variance ratio in adult tarsus length between the different sexes and treatment groups.

Variance Test	Variance Ratio	95% CI of Ratio	p
Control Males vs. Fed Males	3.51	1.10-9.55	0.03
Control Females vs. Fed Females	0.61	0.21-1.83	0.37
Control Males vs. Control Females	1.16	0.39-3.06	0.79
Fed Males vs. Fed Females	4.99	1.51-14.65	0.01

Sample sizes given in Figure 2. Raw p-values from F-tests and confidence intervals are reported here. When comparing the ratio of two variances a value of one means that they are equal.