Sent_en: 2ms Masturbation rates for both genders increased along with age, though only boys were more likely to report having "recently" engaged in the activity as they grew older.
Sent_yy: Kadar onani bagi kedua-dua jantina meningkat bersama usia, walaupun hanya remaja lelaki biasanya lebih melaporkan "kini" terlibat dalam aktiviti seksual apabila meningkat usia.