Table 2.

 Mammographic predictors for malignancy by age groups

Years		Mammographic findings	Total number	No. malignancies	Ratio of malignant cases (%)	P‐value	Odds ratio
21–39	Mass	Irregular‐spiculated: with calcification	4	4	100.0	0.001	–
	Calcification	Amorphous‐segmental‐with FAD	4	4	100.0	0.001	–
		Pleomorphic‐any distribution	11	9	81.8	<0.001	15.53
	FAD	With distortion	11	8	72.7	<0.001	14.1
40–49	Mass	Lobular‐indistinct or spiculated‐high	5	5	100.0	0.001	–
		Irregular‐indistinct‐high	10	8	80.0	<0.001	13.8
		Irregular‐spiculated‐any density	13	13	100.0	<0.001	–
	Calcification	Amorphous‐segmental	52	26	50.0	0.001	3.35
		Pleomorphic‐any distribution	37	35	94.6	<0.001	58.59
		Linear‐segmental	4	4	100.0	0.004	–
	FAD	With distortion	23	19	82.6	<0.001	15.9
	ABT	With distortion	4	4	100.0	0.004	–
50–59	Mass	Round‐indistinct or microlobulated‐equivalent or high	6	6	100.0	<0.001	–
		Oval‐microlobulated‐high	8	6	75.0	0.002	15.35
		Lobular‐indistinct or microlobulated‐high	14	13	92.9	<0.001	44.86
		Irregular‐indistinct, obscured or spiculated	43	43	100.0	<0.001	–
	Calcification	Amorphous‐grouped‐with FAD	8	8	100.0	<0.001	–
		Amorphous‐segmental	27	14	51.9	0.002	3.72
		Pleomorphic‐any distribution	43	33	76.7	<0.001	11.39
	FAD	With or without distortion	63	44	69.8	<0.001	7.99
	ABT	With distortion	7	7	100.0	<0.001	–
60–69	Mass	Round‐circumscribed or microlobulated‐high	6	6	100.0	0.012	–
		Lobular‐microlobulated or indistinct‐any density	11	10	90.9	<0.001	34.51
		Irregular‐any periphery‐any density	31	31	100.0	<0.001	–
	Calcification	Amorphous‐segmental‐with FAD	5	5	100.0	0.025	–
		Pleomorphic‐any distribution	28	26	92.9	<0.001	31.2
		Linear‐any distribution	5	5	100.0	0.045	–
	FAD	With distortion	19	17	89.5	<0.001	20.4
	ABT	With or without distortion	4	4	100.0	0.045	–
70–89	Mass	Lobular or irregular, any periphery, any density	52	49	94.2	<0.001	56.37
	Calcification	Pleomorphic, any distribution	14	13	92.9	0.013	16.25