Lou Ru-pin quotes from his statistics, "Dividing these cases into attempted suicide and successful suicide, 20 % of persons who attempt suicide are suffering from some form of mental illness; in successful suicides, 70 to 90 % suffer from mental illness."
「若把自殺的個案分為自殺企圖和自殺成功。自殺企圖中百分之二十有精神疾病；自殺成功的個案百分之七十到九十有精神疾病」，陸汝斌的統計指出，而這些精神疾病中，比率最高的就是憂鬱症。