Table 4

Mean values for the outer diameter (OD), inner diameter (ID), spinolaminar angle (SLA), and screw length (SL) for subgroups according to ethnicity and gender.

Measure	NZE Men	NZE Women	Māori Men	Māori Women	P
Right OD (mm)	6.5	6.3^{^a}	7.1^{^a}^{, ^b}	6.2^{^b}	0.012
Left OD (mm)	6.8	6.6^{^a}	7.3^{^a}^{, ^b}	6.4 ^{^a, ^b}	0.008
Right ID (mm)	3.5	3.3^{^a}	3.9^{^a}^{, ^b}	3.2^{^b}	0.034
Left ID (mm)	3.8	3.5^{^a}	4.3^{^a}^{, ^b}	3.3^{^b}	<0.001
Right SLA (°)	44.8^{^c}	46.1	47.3^{^c}	46.4	0.003
Left SLA (°)	45.0^{^c}	46.5	46.8^{^c}	47.1	0.045
Right SL (mm)	32.2^{^d}^{, ^e}	30.0^{^a}^{, ^e}	32.9^{^a}^, ^{^b}	29.7^{^b}^{, ^d}	<0.001
Left SL (mm)	32.3^{^e}	29.7^{^a}^{, ^e}	32.4^{^a}	30.1	<0.001

Abbreviation: NZE, New Zealand European.
Note: Group comparisons were performed using a 1-way analysis of variance. Significant between-group differences are noted by symbols assigned as follows. Significant P values appear in bold type.
↵a NZE women: Māori men
↵b Māori men: Māori women
↵c NZE men: Māori men
↵d NZE men: Māori women
↵e NZE men: NZE women