TABLE 1.

Traits used in logistic discriminant functions, with their codes, breakpoints, numbers of observations, and frequencies in each group.

trait	tooth	code	breakpoint		n	AA frequency	n	EA frequency	n	NMH frequency	n	SFH frequency
			absent	present
double shovel	maxillary first incisor	UI1DS	0–1	2–6	90	0	145	0	80	0.275	185	0.335
shovel shape	maxillary second incisor	UI2SS	0–1	2–7	88	0.352	144	0.139	77	0.636	181	0.619
double shovel	maxillary second incisor	UI2DS	0	1–6	88	0	144	0.007	77	0.52	182	0.56
shovel shape	maxillary canine	UCSS	0–1	2–6	87	0.172	142	0.035	72	0.444	165	0.43
distal accesory ridge	maxillary canine	UCDR	0–1	2–5	89	0.764	143	0.392	76	0.711	176	0.58
tuberculum dentale	maxillary canine	UCTD	0–1	>1	83	0.855	135	0.467	65	0.492	150	0.58
hypocone	maxillary first molar	UM1HC	0–4	>4	89	0.191	143	0.266	80	0.75	182	0.841
metacone	maxillary first molar	UM1MC	0–4	>4	90	0.267	145	0.407	81	0.901	187	0.893
metacone	maxillary second molar	UM2MC	0–4	>4	83	0.133	136	0.103	65	0.32	172	0.593
metaconule	maxillary second molar	UM2C5	0	1–5	73	0.37	125	0.12	58	0.344	132	0.28
shovel shape	mandibular first incisor	LI1SS	0	1–3	89	0.292	143	0.175	82	0.841	188	0.622
shovel shape	mandibular second incisor	LI2SS	0	1–3	90	0.333	144	0.132	81	0.852	189	0.646
distal accesory ridge	mandibular canine	LCDR	0–1	2–5	88	0.546	144	0.125	76	0.355	186	0.268
lingual cusp complexity	mandibular anterior premolar	LP3LC	0–3	4–9	83	0.928	140	0.114	77	0.065	186	0.145
anterior fovea	mandibular first molar	LM1AF	0–1	2–4	78	0.244	124	0.121	75	0.68	168	0.661
deflecting wrinkle	mandibular first molar	LM1DW	0	1–3	755	0.467	130	0.215	69	0.304	171	0.251
protostylid	mandibular first molar	LM1PS	0	>0	82	0.073	138	0.036	76	0.566	179	0.291
cusp seven	mandibular first molar	LM1C7	0	1–4	85	0.447	138	0.138	77	0.234	176	0.568
fifth cusp	mandibular second molar	LM2C5	0	1–5	66	0.561	127	0.205	51	0.333	136	0.331
cusp seven	mandibular second molar	LM2C7	0	1–4	83	0.181	133	0.068	60	0.183	150	0.493