. 2020 Apr 20;49(4):20190359. doi: 10.1259/dmfr.20190359

Table 2.

Comparison of FD according to regions of interest and study groups

ROI	Region	Group	N	Mean (±SD) FD	Median FD (Min-Max)	p-value
Square 50 × 50 pixels: trabecular bone	Condyle	COD	50	1.3956 (±0.0793)	1.4120 (1.0756–1.5057)	0.016^a
	Condyle	Non-COD	50	1.3569 (±0.0947)	1.3710 (1.0684–1.4929)	0.016^a
	Angle	COD	50	1.3902 (±0.0737)	1.3896 (1.1295–1.5104)	0.503^b
	Angle	Non-COD	50	1.4001 (±0.0711)	1.4125 (1.2580–1.5165)	0.503^b
	Molar	COD	50	1.3168 (±0.0844)	1.3154 (1.0255–1.4963)	0.350^b
	Molar	Non-COD	50	1.2996 (±0.1082)	1.3103 (1.0007–1.4678)	0.350^b
	Premolar	COD	50	1.3096 (±0.0714)	1.2979 (1.1400–1.4503)	0.855^b
	Premolar	Non-COD	50	1.3126 (±0.0741)	1.3258 (1.1173–1.4390)	0.855^b
	Anterior	COD	50	1.2906 (±0.0970)	1.2890 (1.0286–1.4770)	0.798^a
	Anterior	Non-COD	50	1.2802 (±0.1259)	1.3059 (0.8996–1.4568)	0.798^a
Square 100 × 100 pixels: trabecular bone	Ramus	COD	50	1.3471 (±0.0955)	1.3557 (1.0205–1.5046)	0.682^a
	Ramus	Non-COD	50	1.3335 (±0.1333)	1.3760 (0.8364–1.4853)	0.682^a
	Anterior	COD	50	1.2438 (±0.0992)	1.2454 (0.9610–1.4216)	0.866^b
	Anterior	Non-COD	50	1.2772 (±0.1132)	1.2624 (0.9726–1.4385)	0.866^b
Anatomic ROI	Cortical	COD	50	1.2039 (±0.0926)	1.2019 (1.0312–1.4006)	0.031^b
Anatomic ROI	Cortical	Non-COD	50	1.2472 (±0.0894)	1.2483 (1.0546–1.3830)	0.031^b
Square 50 × 50 pixels	Trabecular total mean	COD	50	1.3461 (±0.0419)	1.3440 (1.2042–1.4154)	0.223^b
Square 50 × 50 pixels	Trabecular total mean	Non-COD	50	1.3354 (±0.0508)	1.3486 (1.2040–1.4099)	0.223^b
Square 100 × 100 pixels	Trabecular total mean	COD	50	1.3127 (±0.0741)	1.3173 (1.0847–1.4184)	0.595^b
Square 100 × 100 pixels	Trabecular total mean	Non-COD	50	1.3047 (±0.0984)	1.3210 (0.9750–1.4370)	0.595^b

COD, cemento-osseuos dysplasia; FD, fractal dimension;ROI, region of interest; SD, standard deviation.

Wilcoxon test,

Paired test T.