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Results for “Social Class--statistics”

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At least 19 recordsLinked to original sources
PubMed1975

Utilization of mental health services. I. Patienthood and the prevalence of symptomatology in the community.

We explored the association between patienthood and prevalence of symptomatology in the community. Base line data on prevalence were obtained through the use of a household survey. Characteristics of survey respondents (N equals 938) and patients admitted from the surveyed area to a Connecticut Mental Health Center during a 12-month period (N equals 808) were compared. High utilization of facilities was associated with the prevalence of symptoms in the community, particularly where defining characteristics were descriptors of disadvantaged social status. A second set of variables correlated with mental health center use but not with the prevalence of symptoms in the community. By and large, these characteristics describe a lack of social supports not necessarily related to social status. Finally, certain groups were underrepresented as patients even though comprising polulations-at-risk in terms of levels of symptom impairment in the community.

Adult↗
PubMed1977

Causal analysis of academic performance.

Maximum likelihood methods are presented to test for the relations between causes and effects in linear path diagrams, without assuming that estimates of causes are free of error. Causal analysis is illustrated by published data of the Equal Educational Opportunity Survey, which show that American schools do not significantly modify socioeconomic differences in academic performance and that little of the observed racial difference in academic performance is causal. For two races differing by 15 IQ points, the differential if social class were randomized would be only about 3 points. The principle is stressed that a racial effect in a causal system may be environmental and that its etiology can be studied only by analysis of family resemblance in hybrid populations.

Educational Status↗
PubMed1992

Application of Fishbein and Ajzen's expectancy-value model to understanding fat intake.

A questionnaire on attitudes towards the consumption of food types (specified by verbal labels) which contribute highly to fat in the diet was completed by 240 subjects who were quota sampled for sex, age and social class. The person's attitude toward consumption was found to be a good predictor of reported consumption. Differences in responses were found between groups of subjects who were classified by sex, age and social class. In general, females, the lower age groups and the higher social class subjects were found to have lower consumption and more negative attitudes towards the food types included. Individual belief-evaluation products on taste and healthiness of the foods were more closely related to attitudes towards consumption than were other beliefs (e.g. on convenience and price).

Adolescent↗
PubMed1975

Congenital malformations, twinning and associated variables in a Brazilian population.

A sample of 6052 newborn children (4968 whites, 1084 Blacks) issued from parents with a generally low socioeconomic level, was studied in relation to congenital anomalies and twinning rates. The observed frequency of major malformations was 1.3% and of minor defects 2.0%. The twinning rate was 1.4%. Race differences were generally nonsignificant in these variables. These results are in agreement with those obtained in some other Brazilian series, but discrepancies were also observed. A total of 13% of the malformations observed proved to be familial, polydactyly being the most common anomaly encountered in this class. The frequency of malformations different from those present in the propositi is higher in their sibships than the general prevalence of defective children found among the sibs of normal babies (13% and 4% respectively). Age, gestation length and exposure of the mothers to noxious agents during pregnancy were not significantly different when the parents of normal and malformed children were compared. On the other hand, as expected, the parents of twins are significantly older than those of single-born, and the gestation length was much reduced in pregnancies resulting in multiple births.

Black People↗
PubMed1977

Variation in allele frequencies among caste groups of the Dhangars of Maharashtra, India: an analysis with Wright's Fst statistic.

Variations in allelle frequencies at 11 serological and biochemical loci among 21 endogamous Dhangar castes of Maharashtra, India, have been studied using Wright's FST statistic. Gene differentiation among these castes is only about 4 per cent at these polymorphic loci. The distributional form of FST is explicable by random genetic drift at this early stage of differentiation of these caste groups. The empirical relationship between the average allele frequencies and the ration of within to total gene diversity of the caste groups is also studied.

Alleles↗
PubMedDate not supplied

Menarcheal age in Oslo during the last 140 years.

Data from maternity clinics have been used to study the trend in menarcheal age among girls born in Oslo after 1840. The investigation was based on recordings from approximately 50 women from each year. The women were divided into social categories according to their own or their husband's occupation. The results show a trend toward earlier maturation within the working class, which is characterized by two periods of rapid fall in menarcheal age. The first period covers women born between 1860 and 1880, and shows a fall in menarcheal age from about 15.6 to about 14.6 years. During the second period of rapid fall, which covers women born between 1905 and 1940, the menarcheal age was further reduced from about 14.6 to 13.3 years. The age at menarche has been stable at about 13.3 years for women born after 1940. These results contrast with those of some earlier studies of the menarcheal age in Norway. However, it is shown that the discrepancies between these investigations and our own disappear when the same computational methods and the same interpretation of the age recordings are used.

Adolescent↗
PubMed1976

Mantel-Haenszel analysis of Oxford data. I. Independent effects of several birth factors including fetal irradiation.

Data from the Oxford Survey of Childhood Cancers were subjected to the Mantel-Haenszel procedures to recognize independent effects of associated factors in retrospective data. Our results showed that several birth factors, including fetal irradiation, social class, maternal age, and sibship position, exerted separate effects on childhood cancers in general, and reticuloendothelial system neoplasms in particular.

Adolescent↗
PubMed1991

Neuropsychiatric assessment of children with autism: a population-based study.

Thirty-five children with autistic disorder and 17 with autistic-like conditions underwent an exhaustive neurobiological evaluation, and the findings were contrasted with those obtained from various comparison groups. Almost 90 per cent of the children with autistic disorder and autistic-like conditions had major indications of brain damage or dysfunction. Some of those who did not show such abnormalities had a first-degree relative with Asperger syndrome. The rate of abnormality was similar to that of severely mentally retarded children, but in excess of that of normal children. Within the autism group, abnormality rate did not correlate with degree of mental retardation. It is concluded that autism has multiple biological aetiologies and that autistic symptoms in a child should always prompt a thorough medical/neurobiological evaluation.

Adolescent↗
PubMed1977

Multistage scoring system for identifying infants at risk of unexpected death.

Obstetric and perinatal records have been assembled on 250 infant deaths and an equal number of live controls including 55 deaths associated with congenital anomalies. The information was used to construct a scoring system to identify high-risk infants at birth. Parents of 115 of the cases and their controls were also interviewed and all hospital, general practitioner, and health service records abstracted. Cases and controls were compared item by item in respect of all information available up to the age of one month and a scoring system constructed for use at one month. The 'at birth' and combined scoring systems are presented. The chance of death by age attained is presented for various risk groups. In a small prospective test, the multistage scoring system was nearly 50% more effective than the birth score alone.

ABO Blood-Group System↗
PubMed1975

Epidemiology and family characteristics of severely-abused children.

Severe child abuse in north-east Wiltshire was studied retrospectively during the period 1965-71, and prospectively for 18 months from January 1972, after a period of consultative activity with those actively involved to increase awareness of the phenomenon. Severe abuse was strictly defined. A rate of 1 per thousand children under four years old was obtained, together with a death rate of 0-1 per thousand. The families of the retrospective series of abused children were studied in detail and identifying characteristics of large family size, youthfulness, low social-class, instability, and gross psychiatric, medical, and social pathology described. The implications of the ascertainment and death rates are discussed in relation to data from some other studies, and the need emphasized for detailed studies of the apparent clustering of disorder in the families, using linked record systems.

Child Abuse↗
PubMed1991

Are our babies becoming bigger?

I have tried to show, using a contemporary international data set, the overall consistency in shape of curves of national birthweight distributions which reflect the biological and social characteristics of the population from which they are derived, and the effects of changes in these characteristics. For several countries, including the United States and England and Wales, the trends in recent years have been such as to shift the main distribution upwards, so that the median weight has increased. Also shown has been the close and specific relationship within each population group between infant mortality and birthweight, with sharp falls of mortality with increasing birthweight. It has been shown elsewhere that similar patterns are seen with short- and long-term morbidity, thus underlining the importance to be attached to increasing birthweight particularly in underprivileged groups. In the short term this can be done by reducing the frequency of parental smoking, where this is a problem, and in the longer term by improving maternal health and nutrition. The shift towards higher birthweights if it persists, should make an important contribution towards the improvement of the public health of the next generation.

Adult↗
PubMed1990

Femoral anteversion in healthy children. Application of a new method using ultrasound.

Femoral anteversion (torsion) was measured in 219 healthy children aged 1-15 years (boys 128, girls 91). The hips and knees were examined using a standard static-image B-mode compound scanner. The torsion in each femur was calculated. The findings show: (1) A significant negative correlation between femoral anteversion and age (r = -0.43), with only 8-22% being accounted for by age (r2 value). (2) A significant correlation between anteversion of the two femora (r = 0.77). (3) No sex difference for femoral anteversion and its asymmetry. (4) Marked degrees of femoral anteversion asymmetry (more than 10 degrees) show a pattern suggesting a relation to age, side and possibly sex. (5) Abnormal femoral anteversion asymmetry in 12 children, there being an excess of children with orthopaedic symptoms and signs in the group with femoral anteversion outside 2 S.D. (6) A relation between anteversion asymmetry and foot length/tibial length ratio. (7) No relation of femoral anteversion to social class, order in family, parental age at birth of child, birth weight and presentation. (8) A significant correlation of femoral anteversion between siblings (r = 0.66).

Adolescent↗