Table 2.

Mean & Standard deviation, p value and mean difference of 6 distances (AB, BC, CD, AD, AC, BD) of groups I (C2mm), II (C4mm), III (D2mm), IV (D4mm)

Distance	Groups	Mean ± SD.	p	Mean Diff.
ab	Group I	20373.9 ± 2.99	< 0.001*	28.93
	Group II	20253.5 ± 1.06	< 0.001*	49.47
	Group III	20344.1 ± 2.12	0.110	-0.93
	Group IV	20204.3 ± 2.29	0.582	0.33
bc	Group I	20757.9 ± 3.01	< 0.001*	-8.07
	Group II	21544.5 ± 1.36	< 0.001*	39.47
	Group III	20764.5 ± 2.97	0.066*	-1.53
	Group IV	21504.5 ± 1.06	0.110	-0.47
cd	Group I	21755.5 ± 2.45	< 0.001*	19.53
	Group II	20668.0 ± 1.46	< 0.001*	30.0
	Group III	21736.2 ± 2.04	0.710	0.20
	Group IV	20639.7 ± 2.28	0.011*	1.73
ad	Group I	43474.1 ± 2.71	< 0.001*	21.07
	Group II	43436.5 ± 1.88	< 0.001*	60.53
	Group III	43454.1 ± 2.36	0.084	1.133
	Group IV	43376.9 ± 2.37	0.150	0.93
ac	Group I	36054.3 ± 2.74	< 0.001*	25.27
	Group II	36563.3 ± 0.72	< 0.001*	30.33
	Group III	36030.5 ± 2.17	0.020*	1.47
	Group IV	36533.3 ± 1.18	0.290	0.33
bd	Group I	36934.7 ± 2.66	< 0.001*	22.73
	Group II	36975.9 ± 1.19	< 0.001*	30.87
	Group III	36913.9 ± 2.34	0.006*	1.93
	Group IV	36946.0 ± 1.60	0.030*	1.0

Data was expressed using Mean ± SD. SD: Standard deviation

p: p value for One Sample t-test comparing between Reference and each group

*: Statistically significant at p ≤ 0.05