Leviton A
J Child Neurol. 1986 Oct;1(4):372-7. doi: 10.1177/088307388600100411.
Children who are brought to medical attention because of frequently recurring or disabling headaches appear to have an increased prevalence of learning handicaps. Some of this increase might reflect Berkson's principle--the selection bias of an overrepresentation of patients with two disorders. Consideration is given to five models that show a relationship between learning handicap and headache. Two of the models are dismissed as too simple. Studies are needed to determine whether learning handicap and headache are indeed associated, and, if so, how. Clinicians are advised not to wait until these studies have been completed before implementing therapeutic programs that might prove helpful to those children with both headache and learning handicap.
因频繁复发或导致功能障碍性头痛而就医的儿童似乎学习障碍的患病率有所增加。这种增加部分可能反映了伯克森法则——两种疾病患者过度代表的选择偏倚。文中考虑了五个显示学习障碍与头痛之间关系的模型。其中两个模型因过于简单而被排除。需要开展研究来确定学习障碍与头痛是否确实相关，如果相关，又是如何相关的。建议临床医生在实施可能对既有头痛又有学习障碍的儿童有帮助的治疗方案之前，不要等到这些研究完成。
