Table 2.

Sample sizes and dimorphism statistics for individual metrics measured directly from chimpanzee, human and gorilla specimens. Metrics are explained in table 1.

species	HHD	OLCB	CAPD	RHD	ULB	FHD	TRCD	FNEKH	GSTB	CNDC	PRXTB	DSTTB	FIBD	TALUS	GMEAN
chimpanzees
male (n)	23	23	23	22	23	23	23	23	23	23	23	23	22	19	18
female (n)	25	25	25	25	25	25	25	25	25	25	25	25	25	24	24
CV	6.64	9.42	9.49	6.65	9.03	6.48	7.80	7.27	7.31	7.40	5.98	8.20	6.72	6.23	5.32
actual DM	1.066	1.073	1.090	1.038	1.059	1.049	1.054	1.032	1.029	1.036	1.041	1.003	1.052	1.029	1.043
BDI	1.115	1.163	1.165	1.113	1.155	1.114	1.133	1.123	1.126	1.127	1.103	1.147	1.110	1.106	1.093
difference	0.049	0.090	0.075	0.075	0.096	0.065	0.079	0.091	0.097	0.091	0.062	0.144	0.058	0.077	0.050
humans
male (n)	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25
female (n)	25	25	25	25	25	25	25	25	25	25	25	25	25	25	25
CV	8.92	11.08	9.17	8.87	13.07	8.81	9.64	11.00	8.67	10.17	7.73	12.07	9.67	8.02	8.02
actual DM	1.170	1.176	1.124	1.151	1.203	1.157	1.142	1.178	1.100	1.173	1.134	1.183	1.116	1.135	1.151
BDI	1.169	1.202	1.161	1.160	1.237	1.161	1.165	1.199	1.151	1.186	1.140	1.214	1.166	1.141	1.153
difference	−0.001	0.026	0.037	0.009	0.034	0.004	0.023	0.021	0.051	0.013	0.006	0.031	0.050	0.006	0.002
gorillas
male (n)	24	25	25	24	25	25	25	25	25	25	25	25	23	21	19
female (n)	25	25	25	25	25	25	25	25	25	25	25	25	25	22	22
CV	14.92	18.09	15.02	14.60	16.74	12.66	12.66	14.00	14.98	14.23	13.62	13.80	16.06	10.98	13.29
actual DM	1.325	1.390	1.300	1.296	1.324	1.258	1.225	1.258	1.297	1.275	1.279	1.257	1.330	1.208	1.279
BDI	1.305	1.378	1.297	1.290	1.324	1.252	1.242	1.268	1.299	1.284	1.271	1.259	1.325	1.208	1.264
difference	−0.020	−0.012	−0.003	−0.006	0.000	−0.006	−0.003	0.010	0.002	0.009	−0.008	0.002	−0.005	0.000	−0.015