Table 3.

Multivariate Analysis for Prediction Models Based on Age Group and Menopausal Status

Features		P valuea	OR1 (95% CI)	P valueb	OR2 (95% CI)
Quantity	Single	/
	Multiple unilateral	0.002*	0.52 (0.34, 0.79)	0.026*	0.58 (0.36, 0.94)
	Multiple bilateral	<0.001*	0.28 (0.20, 0.40)	<0.001*	0.25 (0.17, 0.37)
Distribution	Grouped	/
	Segmental	<0.001*	9.6 (6.8, 13.6)	<0.001*	6.0 (3.4, 10.5)
	Regional	0.002*	2.1 (1.3, 3.3)	0.158	1.6 (0.84, 3.0)
MD		<0.001*	1.05 (1.04, 1.06)	0.017*	1.02 (1.00,1.03)
Age group	<40	/
	40–49	0.43	0.86 (0.60, 1.2)	0.316	0.8 (0.5, 1.2)
	50–59	0.599	1.1 (0.74, 1.69)	0.759	1.1 (0.67,1.7)
	≥60	0.013*	2.0 (1.2, 3.4)	0.036*	1.9 (1.05,3.6)
Menopausal status		<0.001*	2.0 (1.5, 2.7)	<0.001*	1.9 (1.4, 2.7)

Notes: ^aMultivariate analysis result for prediction model based on age group, ^bMultivariate analysis result for prediction model based on menopausal status; MD Maximum diameters of the group of calcifications. *P < 0.05 was considered statistically significant.