A screening program for cervical cancer in a rural Indian district uses HPV DNA testing (high-sensitivity test) on 10,000 women. The test has a sensitivity of 98% and specificity of 85%. Among the 2,500 women who test positive, only 200 actually have cervical intraepithelial neoplasia (CIN) grade 2 or higher on colposcopy. The district health officer wants to reduce unnecessary colposcopy referrals. What is the most appropriate next step?