Table 8. Tests of homogeneity of slopes between captive and wild samples for regressions of the square root of each articular surface area on the geometric mean demonstrate no statistical differences.

	Captive			Wild
Square root of:	N	Slope	SE	N	Slope	SE	t	df	p
Femoral head (FHSA)	20	0.72	0.19	22	0.90	0.18	0.68	38	0.50
Femoral condyles (FCSA)	20	0.96	0.18	22	0.81	0.11	0.75	38	0.46
Tibial plateau (TPSA)	20	0.51	0.07	22	0.57	0.10	0.44	38	0.66
Distal tibia (TTSA)	20	0.21	0.09	22	0.46	0.08	2.11	38	0.04
Humeral head (HHSA)	20	0.45	0.16	22	0.53	0.22	0.28	38	0.78
Distal humerus (HDSA)	20	0.69	0.11	22	0.71	0.11	0.08	38	0.94
Radial head (RHSA)	20	0.36	0.04	22	0.32	0.06	0.58	38	0.56
Distal radius (RCSA)	19	0.31	0.13	22	0.41	0.06	0.75	37	0.46
Proximal ulna (UTSA)	20	0.65	0.10	22	0.48	0.12	1.09	38	0.28
Distal ulna (UCSA)	20	0.18	0.06	22	0.17	0.04	0.14	38	0.89

Notes.

p-value in bold is significant at alpha = 0.05.