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Results 501 - 550 of 688
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Dechamp C - - 1993
The aim of this study is to appreciate what conclusions may be drawn from the comparison between two different methods for pollen count determination in clinical allergology. In Lyon (France), two pollen collectors are set up in two places separated by ten kilometers, as the crow flies. The Hirst-type trap ...
Madrigal L - - 1993
Demographic studies repeatedly indicate that human births tend to fluctuate in a seasonal pattern, particularly in agricultural groups. Interestingly, lack of seasonal variation has been infrequently reported. Recently, Arcury et al. (1990) indicated that only one published study identified a population in which no seasonality of births was demonstrated. Here, ...
Jongbloet P H - - 1993
In order to explain the winter (and often summer) birth excess of women characterized by subfecundity two competing hypotheses have been proposed: i) the seasonal preovulatory overripeness ovopathy (SPrOO) hypothesis (1-3) and ii) the epidemic seasonal infertility factors (ESIFs) hypothesis (4-6). The former assumes nonoptimum maturation of the oocyte during ...
McNeil T F - - 1993
Head circumference, body weight, body length, and shoulder circumference at birth were studied in 70 RDC schizophrenic patients and 70 demographically matched controls from the same delivery series, using information recorded in the medical records at the time of birth. With preterm babies removed from both samples, only head circumference ...
Webber R H - - 1993
Based on the infant parasite rate where an increasing number of infants become positive for each month of age (until a plateau is reached) a measure is developed using surveillance blood slides of all cases of malaria at the start of the transmission season. The fortnightly PCD returns from the ...
Currie W D - - 1993
Diurnal and seasonal fluctuations were detected in luteinizing hormone (LH) interpulse interval, but not amplitude, in ewes examined during the mid-luteal phase of an oestrous cycle at five stages of the breeding season. Daytime and night-time LH interpulse intervals were greater in the early and late than in the mid-breeding ...
Torrey E F - - 1993
A study of the birth pattern of 30,467 patients with schizophrenia and 428,406 stillbirths in New York State showed a significant winter-month excess in both schizophrenia births (p = 0.0000) and stillbirths (p = 0.0000). Excess births of individuals with schizophrenia in November and December provided additional evidence to refute ...
Bercovitch F B - - 1993
Most cercopithecines reproduce on a seasonal basis, but the proximate mechanisms influencing birth periodicity are often unclear. We analyze 10 years of data from the Gilgil Baboon Project (Kenya) in order to examine the relationship between annual birth patterns and rainfall. Savanna baboons at Gilgil copulated in all months of ...
Eregie C O - - 1992
This report presents the observations on seasonality and neonatal tetanus (NNT) mortality from a cluster survey on NNT mortality conducted in Kano metropolis, Northern Nigeria. A two stage cluster sampling method was used for the survey. There were 2,623 live-births with 1778 (67%) occurring in the dry season (October-May). The ...
Gupta S - - 1992
Measures of morbid risk for schizophrenia derived from the WHO Determinants of Outcome of Severe Mental Disorders Study showed large correlations with the following: an occupational index, a measure of urbanicity, geographical and climatic variables, a dietary measure, and the infant mortality rate. The same variables were also correlated with ...
Faustman W O - - 1992
Repeated studies suggest a relationship between winter birth and increased incidence of schizophrenia. Furthermore, there may be seasonal fluctuations in schizophrenia risk factors (e.g., influenza epidemics) and the severity of biological anomalies (e.g., enlarged cerebral ventricles in neuroimaging studies). In order to assess whether winter-born schizophrenics show greater neuropsychological impairment, ...
Namgung R - - 1992
Possible seasonal differences in newborn bone mineral content (BMC) have not been studied. Adult studies show seasonal variations with lower BMC in winter versus summer. Assuming that BMC variations may relate in part to vitamin D status, we hypothesized that newborn BMC would be lower in winter than summer. BMC ...
Cooper S J - - 1992
"The birth dates of schizophrenic inpatients in eight health regions in England and Wales were reviewed for any effect of the 1957 A2 influenza epidemic. 5 months after the peak infection prevalence, the number of births of individuals who later developed schizophrenia was 88% higher than the average number of ...
Schanda H - - 1992
The premorbid psychosocial adjustment of 28 schizophrenic criminal offenders, 23 non-criminal-offender schizophrenics (ICD-9) and 14 nonpsychotic criminals was compared by means of the Premorbid Adjustment Scale (PAS). The schizophrenic groups did not differ regarding age, marital status, diagnostic subgroup or length of illness. PAS scores showed highly significant differences between ...
Goodman S H - - 1992
Pregnancy and birth complications in births to 57 schizophrenic, 28 depressed, and 31 well women were studied. The sample was of low socioeconomic status and predominantly African-American. The study extended earlier work on the perinatal status of infants born to schizophrenic women by including measures of severity of maternal disturbance, ...
Boldsen J L - - 1992
All 8th-form schoolgirls from the municipality of Odense in Denmark were asked at what age they reached menarche, and 886 girls (97.6%) gave this information. There is no evidence for seasonality in the time of birth but for far more girls than expected menarche occurred during winter or summer and ...
Marcuzzi G - - 1992
We present results on the seasonality of death in four communes of the Val di Scalve (Bergamo Pre-Alps, Lombardia, Italy). The seasonality is remarkable in all four localities and also in both halves of the century examined (1889-1988). In particular, the mortality peaks during the cold season.
Dykes K L - - 1992
Previous research has demonstrated: (1) Subjects who are at genetic high risk for schizophrenia and who suffer delivery complications are at increased risk to evidence a widened third ventricle. (2) A widened third ventricle is related to decreased ANS arousal and, among schizophrenics, is related to negative symptom schizophrenia. (3) ...
Fish B - - 1992
A 1975 report stated that a schizophrenic genotype may be manifested in infants by a neurointegrative defect called pandysmaturation. Recent evidence supports this: (1) 12 studies found delayed development in schizophrenics' infants and in preschizophrenics; (2) "blind" psychometric evaluations favored an adult schizotypal disorder in four to six of seven ...
Bolton P - - 1992
Rates of birth in the general population show seasonal fluctuations for reasons that are ill understood. Variations from these general population patterns have been reported for several psychiatric conditions and used as the basis for aetiological hypotheses. In this paper, the evidence for alterations in the expected seasonal fluctuation in ...
Templer D I - - 1992
The monthly distribution of births of people who were later diagnosed with multiple sclerosis differed significantly from that of the general population in Denmark. The multiple sclerosis patients had an excess of births in March, April, May, and June, and fewer in the other months. Infection was suggested as a ...
Matsuda S - - 1992
Seasonal variations in the proportion of preterm births in Japan from January 1979 to December 1983 are analysed using a traditional method of time-series analysis, which divides the variation in a series into trend, seasonal variation, other cyclic change, and remaining irregular fluctuations. It is shown that the proportion of ...
Pulver A E - - 1992
The hypothesis that mothers of winter-spring-born schizophrenics have an unusual pattern of conception which results in an excess of winter-spring births was tested by studying the distribution of birth-dates of 401 siblings of 120 winter-spring-born schizophrenics and 157 siblings of 59 winter-spring-born controls. All analyses were gender-specific. The results suggest ...
Anand J K - - 1992
We wanted to establish whether the season of birth affected the incidence of neonatally diagnosable hip instability in Eastern England. Data relating the numbers of maternities to the numbers of cases of congenital displacement of the hip diagnosed in neonates were analyzed month by month over a period of 8 ...
Wasnidge C - - 1992
We report a loss of antibody binding in our porcine relaxin radioimmunoassay that has occurred during the coldest periods of the past three winters. We do not know the reason for this seasonal variation but we have eliminated cold deterioration of the iodide used for radioiodination and equipment failures as ...
Hadzisehović M - - 1992
An overview of environmental distribution of tritium in the Danube basin in Yugoslavia during the period 1976-1990 is presented. Temporal and regional variations of environmental tritium in the Danube along its flow (1425-847 km from the confluence) and its tributaries (the Sava, the Tisa, the Velika Morava and the Timok) ...
Eagles J M - - 1991
Several recent studies have found markedly increased rates of schizophrenia among West Indian immigrants to the UK. Almost exclusively, authors have sought psychosocial explanations for these findings. This paper hypothesises that environmental causes, notably obstetric complications and perinatal infections, provide more plausible aetiological models, especially for the raised rates of ...
Clementz B A - - 1991
We administered scales of Perceptual Aberration (PERAB) and Physical Anhedonia (PHYSAN), traits that may be related to risk for schizophrenia, to 54 schizophrenics, 146 of their first-degree relatives (evaluated for schizophrenia-related disorders), and 178 normal subjects (screened for psychotic disorders in them or their relatives). For both scales, there was ...
Daigneault J - - 1991
Although a seasonal trend in the birth distribution has been reported in cystic fibrosis (CF), this finding is still very controversial. The birth distribution of 113 patients with cystic fibrosis born in Saguenay-Lac-St-Jean (complete ascertainment) was analysed using two different statistical methods. Our results showed no monthly or seasonal birth ...
Kumar B S - - 1991
Experiments were performed to study the extent of the involvement of photoperiod in the timing of seasonal reproduction in brahminy myna (Sturnus pagodarum). The reproductive cycle corresponds to annual variations in day length and there is a marked seasonal variation in the photogonadal response of birds, which is evident when ...
Jones G H - - 1991
The head circumference of a long-stay population with schizophrenia was compared with that of a population with dementia, matched for sex and year of birth. Schizophrenics had a smaller head circumference, even after correction for height and weight. This confirms earlier but inconclusive and controversial reports, and might be taken ...
Foerster A - - 1991
Risk factors thought to predispose to schizophrenia, and premorbid functioning, were assessed blind to diagnosis by interviewing the mothers of 73 patients with DSM-III schizophrenia or affective psychosis. Higher risk of schizophrenia in relatives, lower mean birth weight, a more frequent history of obstetric complications, and poorer educational achievement distinguished ...
O'Callaghan E - - 1991
OBJECTIVE: This study investigated possible antecedents of minor physical anomalies in schizophrenia, particularly in terms of obstetric and genetic factors, and demographic, clinical and cognitive correlates of such anomalies in schizophrenia. METHOD: Forty-one outpatients satisfying the DSM-III criteria for schizophrenia were examined for minor physical anomalies by using the Waldrop ...
Lam D A - - 1991
Seasonal fluctuations in births have been observed in virtually all human populations. In this paper we re-examine the seasonality of births with two main objectives in mind. The first is to provide an overview of the basic facts about the seasonality of births, presenting new estimates of the seasonal patterns. ...
Underwood J H - - 1991
Analyses of vital data derived from a family record register for the native population of Guam reveal significant variations in births, deaths, and marriages over the period 1901-41. Although lacking marked photoperiod or temperature changes of temperate zones, the tropical island is subject to marked seasonal differences in rainfall characteristic ...
Dysken M W - - 1991
We obtained season-of-birth data in 727 autopsy-confirmed cases of Alzheimer's Disease (AD) and compared these data with expected general population birth rates. There were no significant differences between quarterly birth rates in the AD group and expected quarterly birth rates. Edward's test for cyclical trends did not establish a peak ...
Grønning M - - 1991
The incidence of multiple sclerosis (MS) was studied in the county of Hordaland, western Norway. A significant increase in incidence in the period 1958-1987, a decline followed by a gradual increase in mean age at onset, geographic differences in time trends and a biphasic pattern revealed by a birth cohort ...
Vaegan - - 1990
We directly compared nonlinear kernels of normal human pattern electroretinograms (PERGs) and corresponding localized flash ERGs (FERGs). The FERG was triphasic and resembled an adaptive process because it decayed slowly without changing shape over several kernel orders and interpulse intervals. The PERG was biphasic in the slice nearest the diagonal ...
Nonaka K - - 1990
Birth records of the French-Canadian population for the period 1621-1765 were analyzed retrospectively to examine the effect of maternal birth season on the seasonal distribution of births. Preliminary examination indicated that there was a bimodal pattern in birth seasonality: a major peak in early spring, a trough in early summer, ...
Barr C E - - 1990
We attempted to replicate earlier findings of an association between exposure to influenza in the second trimester of gestation and adult schizophrenia. The number of live births, of births of future schizophrenics, and of cases of influenza reported to the Ministry of Health in Denmark was ascertained by month from ...
Davies M A - - 1990
A method originally proposed by Snyder and Poore [(1973) Macromolecules 6, 708-715] as a specific probe of trans-gauche isomerization in hydrocarbon chains and recently applied [Mendelsohn et al. (1989) Biochemistry 28, 8934-8939] to the quantitative determination of phospholipid acyl chain conformational order is utilized to monitor the effects of cholesterol ...
Tembon A C - - 1990
This article presents an analysis of the seasonal variation of births between 1978 and 1987 (10 years) in the North West Province. A total of 157,316 births were recorded during the 10 years in question. Highest delivery peaks noticed in the second half of the year for 8/10 years. This ...
Guptill K - - 1990
From 1 January 1981 to 31 December 1982 information on all births to Bedouin Arab women residing in the Negev Desert of Israel showed a previously unreported seasonal pattern. The peak season, November-February, coincided with the period of cool temperatures and the Bedouin Arab cultural seasons of winter and spring. ...
Moran M C - - 1990
Strategic tick control is an attempt to control ticks and reduce losses in animal production due to tick infestations while decreasing the cost for this control. Tick control is understood as a necessity to achieve maximum animal production from animals raised in tick-infested areas. At the same time, it has ...
James W H - - 1990
During the first half of this century, the seasonal pattern of births in European countries showed a major peak in the spring and a minor peak in the autumn. In contrast, the pattern in the US was of a minor peak in spring and a major peak in autumn. Over ...
Pulver A E - - 1990
Contrary to the position taken by Lewis (1989), several articles have demonstrated an association between season of birth and the risk of schizophrenia after controlling for the age-incidence effect. The method used by Pulver et al. (1983) was misinterpreted by Lewis. Clarification of this method is provided along with additional ...
Hjertkvist M - - 1989
STUDY OBJECTIVE: To examine the epidemiological characteristics of boys with cryptorchidism. DESIGN: Cohort survey using the Swedish personal identification code and Medical Birth Registry to link cryptorchid boys with their pregnancy and delivery data. They were compared with the total population of male births during the same period. SUBJECTS: 2861 ...
Nonaka K - - 1989
Questionnaires of birth dates of family members (13,404 families in total) were analyzed in order to examine the effects of delivery season of a baby on the subsequent birth interval. Deliveries at maternal age of 20-34 years were used. In 1921-1935, the mothers who had been delivered of a baby ...
Philpot M - - 1989
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 ...
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