Radiological assessment of the fossa of Rosenmüller using cone-beam computed tomography: A retrospective study

Table 1 Descriptive statistics of the morphometric measurements of the fossa of Rosenmüller (n = 1000 sides)

Variable	n	mean	SD	Median	Minimum	Maximum
Width (mm)	1000	4.2134	1.43496	4.1615	1.17	11.09
Depth (mm)	1000	12.8159	3.39217	12.8350	4.79	25.86
Angle (°)	1000	52.3415	9.11407	51.3950	9.28	79.90
Volume (mm³)	1000	334.7796	329.92826	210.6730	29.31	1632.76

Table 2 Demographic characteristics of the study population

Variable	N	Minimum	Maximum	mean	SD
Age (years)	500	18.00	60.00	31.6207	9.50314

Mean and SD with minimum and maximum values.

Table 3 Comparison of fossa of Rosenmüller measurements between sexes, mean ± SD

Parameter	Female (n = 630)	Male (n = 370)	P value
Width (mm)	4.1988 ± 1.45850	4.2392 ± 1.40960	0.885
Depth (mm)	12.8239 ± 3.39043	12.8018 ± 3.43630	0.973
Angle (°)	51.6567 ± 9.75115	53.5153 ± 7.87686	0.296
Volume (mm³)	307.2620 ± 304.78089	383.2630 ± 368.98751	0.336

P values indicate between-group comparisons; statistical significance was set at P < 0.05.

Table 4 Intraclass correlation coefficient values for intra-observer and inter-observer agreement for all measurements

Parameter	ICC	P value	95% confidence interval
Intraobserver observer 1/observer 2
Width	0.971/0.965	< 0.001	0.941-0.939
			0.974-0.972
Depth	0.973/0.954	< 0.001	0.967-0.965
			0.995-0.996
Angle	0.965/0.961	< 0.001	0.951-0.964; 0.997-0.995
Volume	0.952/0.955		0.941-0.939; 0.991-0.989
Interobserver observer 1-2
Width	0.918	< 0.001	0.901-0.943
Depth	0.912	< 0.001	0.898-0.931
Angle	0.909	< 0.001	0.901-0.913
Volume	0.908	< 0.001	0.889-0.911

ICC: Intraclass correlation coefficient.