A meta-analysis of all previous trials showed a 15% mortality reduction in invited women aged 40 49 years at study entry, but this finding could be due in part to screening of women after age 50 years.
The decreased mortality trend we observed each year over the study period, particularly among women with ER+ tumors, may be due in part to screening programs.
These estimates are substantially lower than our estimate for 4 to 5 year old children of 58% having greater than 2 hours per day of screen time; this difference may be due in part to how screen time was assessed.
Some have contended that very few active infectious cases are identified[ 4] due in part to the screening tools used and programmatic challenges faced within immigration TB screening programs.
"We've recently learned of several examples of dangerous individuals entering the country due in part to lax screening procedures," Scheer continued, before citing a 2017 CBSA audit that found 39 Syrian refugees who should've undergone comprehensive security screenings, but didn't.
This may be attributed in part to mammography screening being more common in the West than in China [ 21], rather than to difference in breast disease rates alone.
Thus a relatively delayed cancer diagnosis may be attributable in part to under screening of HBV patients for HCC, when compared to those with chronic HCV.
Although the overall mortality due to breast cancer in the United States has decreased, attributed in part to breast screening and early application of various treatments, overall mortality in Japan is still increasing [ 1].
However, risk and event rates among clinical trial patients can be very different from the general age-matched population represented by SEER, due in part to trial screening criteria.
