Biomedical subjects
Publications and source records attributed to G Der.
The incidence of schizophrenia is regarded as being similar between different cultures and times. However, several studies, mostly based on first-admission rates, have suggested that the incidence has declined over the past 10-15 years. Data from England and Wales for 1952-86 have been examined: there has been a substantial decrease, beginning in the mid-1960s, in the incidence of schizophrenia.
This paper presents data from a study of acculturation in 291 Greek Cypriot immigrants from the general population of Camberwell, south London. Factor analysis was carried out, and factors were extracted using the maximum likelihood method and subjected to oblique rotation. The best solution was based on two highly correlated factors (0.64), which together explained 28% of the variance. The first factor appeared to represent Cultural Identification, the second, Language Mastery/Ethnocentricism. The construct validity of the factors was substantiated by analyses relating them to a range of other variables likely to be correlated with acculturation. Issues concerning the measurement of acculturation are discussed.
Variation in quarter of birth was examined in patients with a clinical diagnosis of AD. There was a significant excess of first-quarter births among AD patients as compared with the expected birth rates derived from an age-matched census sample. This finding was due entirely to the significant excess of first-quarter births in AD patients without a family history of dementia. No seasonal variation was found in the birth dates of other clinical groups.
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We present estimates of lifetime risk and of cumulative risk up to each age for depressive disorder for the population of an inner city area (Camberwell, SE London). Estimates are based on an incidence study for the year 1976 which drew from the records of a case register. The estimates of lifetime risk obtained, 12% for men and 20% for women, are similar to those previously published in the literature. Inception risk by age and risks for in-patient treatment are also presented for men and women. The method of calculation is discussed and we show how to obtain an upper limit for the effect of the increased mortality associated with the disorder. We noted an apparent decline over the 'seventies' in inception rates for depression, and we consider the comparability of our statistics with risks calculated using complete psychiatric history data.
In this paper, we examine the proposition that members of lower social classes are more likely than those from higher classes to develop minor affective disorders in the face of adverse experiences. This was examined using data from a psychiatric survey of the general population of Camberwell, S.E. London, U.K. Working class subjects experienced significantly more adversity than their middle class counterparts. However, the relationship between life events and psychiatric disorder was consistent and considerable in the working class group. It was attenuated or non-existent in middle class subjects, depending on the particular categorisation of the data. Log-linear analyses suggested that the basis of this finding was unclear. Both the results and the underlying reasons for them merit further investigation.