Based on these data, the percentage of men who reported being screened for prostate cancer by PSA test or digital-rectal examination remained stable from 2001 through 2010 in Maryland and Kentucky and decreased in California and Utah (AAPCs: −0.8%; 95% CI, −1.8% to 0.1% per year in Maryland; −1.4%; 95% CI, −2.2% to −0.6% per year in California; 1.7%; 95% CI, −0.5% to 4.0% per year in Kentucky; −0.6%; 95% CI, −1.1% to −0.1% per year in Utah). Here, KLK3 is linked to prostate cancer.