Table 1.

Performance Measures of Screening Mammography Among Women Undergoing Digital and Film-Screen Examinations^*

Performance Measure†	FFDM	SFM	P-Value
Cases of cancer per 1000 examinations‡	4.8 (4.1, 5.5)	5.4 (4.7, 6.1)	0.04
Cancer detection per 1000 examinations§	4.3 (3.5, 5.0)	4.8 (4.1, 5.4)	0.07
False-negative results per 1000 examinations||	0.54 (0.31, 0.76)	0.63 (0.42, 0.84)	0.39
Sensitivity¶	0.89 (0.84, 0.93)	0.88 (0.84, 0.92)	0.69
Specificity	0.89 (0.89, 0.89)	0.87 (0.87, 0.87)	<0.0001
Recall rate, %	0.11 (0.11, 0.12)	0.14 (0.13, 0.14)	<0.0001
Positive predictive value	0.04 (0.03, 0.04)	0.04 (0.03, 0.04)	0.28

^*Values in parentheses are 95% CIs.

^†Adjusted for site, age, ethnicity, year, and time between screening examinations.

^‡Invasive cancer or DCIS within 12 months of a screening examination

^§Invasive cancer or DCIS within 12 months of a positive screening examination.

^||Invasive cancer or DCIS within 12 months of a negative screening examination

^¶Sensitivity to detect invasive cancer or DCIS within 12 mos. of a screening examination.