De Graaf A S, Van Wyk Kotze T J, Claassen D A
Electroencephalogr Clin Neurophysiol. 1980 Nov;50(3-4):275-81. doi: 10.1016/0013-4694(80)90155-8.
A comparative investigation of the frequency of photoparoxysmal responses (PPR) in the white, mixed and African populations of the Cape Peninsula is presented, based on 9697 consecutive referrals for EEG. PPR were observed in 2.5% of the white, in 1.3% of the mixed and in 0.9% of the African population groups. In the present material there were more patients with epilepsy in the mixed than in the white group, the frequencies changing with age in the two groups. Minor interrelationships of PPR exist with sex, age and race considered separately. Another minor relationship could be demonstrated between PPR and epilepsy. Three-factor interaction exists among epilepsy, age and race, and a further three-way interaction could be shown among sex, age and epilepsy. These relations and interactions were all significant below the 1% level. Standard EEG records (including response to hyperventilation) sensitivity limits to PPR, and the types of seizures themselves, did not differ significantly between the two main ethnic groups.
本文基于9697例连续接受脑电图检查的转诊病例，对开普半岛白人、混血和非洲人群中的光阵发性反应（PPR）频率进行了比较研究。在白人人群中，PPR的发生率为2.5%；在混血人群中为1.3%；在非洲人群中为0.9%。在本研究资料中，混血组的癫痫患者比白人组多，且两组的发生率均随年龄变化。分别考虑性别、年龄和种族时，PPR存在轻微的相互关系。PPR与癫痫之间也存在另一种轻微关系。癫痫、年龄和种族之间存在三因素相互作用，性别、年龄和癫痫之间也存在进一步的三因素相互作用。所有这些关系和相互作用在1%水平以下均具有显著性。两个主要种族群体在标准脑电图记录（包括对过度换气的反应）对PPR的敏感性限度以及癫痫发作类型本身方面，差异均无统计学意义。
