Porfert A R, Rosenfield D B
J Neurol Neurosurg Psychiatry. 1978 Oct;41(10):954-6. doi: 10.1136/jnnp.41.10.954.
The prevalence of stuttering in a university population was 2.1%; 3.4% were former stutterers. More men than women stuttered. Right handed female stutterers were less likely to have "lost" their stutter than were right handed males. Stutterers, past stutterers, and questionable stutterers all had a family history of stuttering. The significant prevalence of stuttering, the increased prevalence among males, the lack of a decline of this disorder over the past few decades despite the increased number of speech clinicians and data concerning handedness, emphasise the need to investigate organic causes of stuttering.
在大学生群体中，口吃的患病率为2.1%；3.4%为曾经的口吃者。口吃的男性多于女性。与右利手男性相比，右利手女性口吃者“不再口吃”的可能性更小。口吃者、曾经的口吃者和疑似口吃者都有口吃的家族病史。口吃的显著患病率、男性中患病率的增加、尽管言语治疗师数量增加以及有关于利手的数据，但在过去几十年中这种疾病并未减少，这些都强调了研究口吃器质性病因的必要性。
