(S (S (SBAR (S (PP-SBJ (NP (NP (PP (BASENP (NN 男)) (IN の)) (NN 子)) (INFK だけ)) (IN は)) (ADJP (S (PP-SBJ (NP (S (SBAR (S-NSBJ (VP (PP-OBJ (BASENP (NN 歳)) (IN を)) (VB 重ねる))) (INP (IN に) (VBV つれ) (INTE て))) (S (SBAR (S (QT (DQL 「) (BASENP (NN 最近)) (DQR 」)) (S-NSBJ (VP (PP-OBJ (BASENP (DT その) (NN 行為)) (IN を)) (VP (VBV し) (VP (MD た)))))) (INQT と)) (S-NSBJ (VP (NN 報告) (VB する))))) (NN 傾向)) (IN が)) (ADJP (JJ 高い))))) (INCON が)) (COMMA 、) (S (PP-SBJ (NP (PP (BASENP (NN 自慰) (NN 行為)) (IN の)) (NN 割合)) (IN は)) (VP (PP (BASENP (NN 男女) (NN 共)) (IN に)) (VP (PP (BASENP (NN 加齢)) (INPH とともに)) (VP (VP (NN 上昇) (VBV し)) (VP (MD た))))))) (PERIOD 。))
男の子 だけ は 歳 を 重ねる につれて 「 最近 」 その 行為 を し た と 報告 する 傾向 が 高い が 、 自慰 行為 の 割合 は 男女 共 に 加齢 とともに 上昇 し た 。
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 .