For patients with significant renal impairment, contrast CT scans may risk contrast-induced nephropathy, and alternative options include magnetic resonance imaging or positron emission tomography scanning [ 8].
Prior analyses limited to invasive cases found modest significant associations between circulating prolactin and risk of invasive breast cancer, with up to a 50% increase in risk contrasting top versus bottom quartiles [ 5, 6].
Lifetime risks contrasted sharply with shorter term risks: at age 40 years, the 10-year risks of CHD in tertiles 1, 2, and 3, respectively, were 0%, 2.2%, and 11.6% for men and 0%, 0.7%, and 2.3% for women.
Our findings relating to children at high-risk contrast with previous research in that we found an association between high prenatal testosterone exposure and risk for ED; we explore possible explanations for this below.
Therefore, HCV antenatal screening does not appear to have benefits that outweigh the risk which contrasts with the screening policy for HIV-1 in pregnant women [ 44].
In our analyses, however, the plotted RRs represent changes in risk across contrasts in exposure that are internal to and reported by the specific studies.
For 13 of the cohorts, only single SMRs were reported; for the remainder there were risk comparisons (contrasts) across 2 or more exposure groups (maximum 7).
Contrast-enhanced radiographic examinations carry the risk of contrast-associated acute kidney injury (CA-AKI).
The choice of radiographic contrast media for use in patients at increased risk of contrast-induced nephropathy (CIN) is of ongoing interest.
Renal function should be checked prior to contrast agent administration in all patients considered at risk of contrast agent nephrotoxicity.
