. 2020 Aug 7;11(2):141–149. doi: 10.4103/ccd.ccd_455_19

Table 3.

Statistical analysis of the tooth size ratios of various malocclusion classes and normal occlusion

Factor	Groups	n	Mean±SD	95% CI for mean difference LB-UB	Homogeneity of variances		ANOVA		Tukey’s HSD

					LS	Significant	F	P*	Mean difference	P*
AR malocclusion group	1M	15	79.08±2.51	77.69-80.47					0.74	0.998
	1F	15	78.34±3.83	76.21-80.46					0.74	0.998
	2D1M	15	78.70±2.85	77.12-80.28					0.52	1.000
	2D1F	15	78.18±2.81	76.62-79.73					0.52	1.000
	2D2M	15	78.75±2.71	77.25-80.25					0.74	0.998
	2D2F	15	78.01±2.00	76.91-79.12					0.74	0.998
	3M	15	79.20±3.70	77.15-81.25					0.59	0.999
	3F	15	78.61±3.37	76.74-80.47					0.59	0.999
	Total	120	78.61±2.96	78.07-79.14	0.96	0.465	0.28	0.960		0.961^a
AR control group	1CM	15	78.51±2.79	76.97-80.06
	1CF	15	77.94±2.29	76.67-79.21
	Total	30	78.23±2.52	77.28-79.17	0.46	0.505	0.38	0.543
AR grand total		150	78.53±2.88	78.07-−78.99	0.90	0.527	0.31	0.971		0.975
OR malocclusion group	1M	15	92.54±2.10	91.38-93.70					1.47	0.453
	1F	15	91.07±1.92	90.01-92.13					1.47	0.453
	2D1M	15	92.33±1.92	91.27-93.39					0.50	0.997
	2D1F	15	91.83±2.14	90.65-93.01					0.50	0.997
	2D2M	15	91.90±1.61	91.01-92.79					0.35	1.000
	2D2F	15	91.55±1.06	90.96-92.14					0.35	1.000
	3M	15	92.85±2.26	91.60-94.10					0.83	0.942
	3F	15	92.02±2.39	90.69-93.34					0.83	0.942
	Total	120	92.01±1.98	91.65-92.37	1.15	0.34	1.24	0.289		0.215^a
OR control group	1CM	15	92.08±2.13	90.91-93.26
	1CF	15	91.78±1.99	90.67-92.88
	Total	30	92.02±2.02	91.27-92.78	0.17	0.681	0.44	0.514
OR grand total		150	92.01±1.98	91.69-92.33	0.95	0.489	1.00	0.444		0.300^a

^aUses harmonic mean sample size=15.00; *α=0.05. n: Number of samples; SD: Standard deviation; LB: Lower bound; UB: Upper bound; LS: Levene’s statistic; F: F statistic; P: Significance level; M: Male; F: Female; AR: Anterior ratio; OR: Overall ratio; ANOVA: Analysis of variance; CI: Confidence interval; HSD: Highly significant difference; BAR: Bolton’s anterior ratio; BOR: Bolton’s overall ratio; 1M: Angle’s class I (male); 1F: Angle’s class I (female); 2D1M: Angle’s class II division I (male); 2D1F: Angle’s class II division I (female); 2D2M: Angle’s class II division II (male); 2D2F: Angle’s class II division II (female); 3M: Angle’s class III (male); 3F: Angle’s class III (female)