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Results 501 - 550 of 704
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Papadopoulos B - - 1994
During the period from May to October 1992, a survey of phlebotomine sandflies was conducted in the Greater Athens region where cases of human and canine leishmaniasis occur. Using castor-oil paper traps, a total of 3015 sandflies were caught. Of the identified specimens, 1002 (34.1%) were Phlebotomus neglectus, 541 (18.4%) ...
Xue J L - - 1994
Seasonal variation of reproductive performance of female swine was analyzed by use of a data base that included farrowing records from 42 commercial swine herds. Farrowing rates of sows bred during December or January were higher (P < 0.001) than those bred in July or August (79.2 vs 74.1%). The ...
Suwanabun N - - 1994
Enzyme-linked immunosorbent assays (ELISAs) highly specific for the characteristic repeat units of the circumsporozoite proteins of the VK 247 and VK 210 polymorphs of Plasmodium vivax were used to test sporozoites produced by feeding mosquitoes on 1,711 human volunteers presenting at four locations in Thailand over five years. There was ...
Matsuda S - - 1994
Seasonal variations of births in six different prefectures in Japan are analysed using Vital Statistics from 1974 to 1983. First births show a bimodal pattern with two peaks, one in winter (December-February) and the other in summer to early autumn (August-September). The seasonality of first births is statistically significantly correlated ...
Günther-Genta F - - 1994
Schizophrenics have been repeatedly found to experience more obstetric complications (OCs) at birth. The meaning of such a finding is debated, and the aim of this study is to contribute to the understanding of OCs' aetiological role in schizophrenia. We compared a group of schizophrenic patients with their siblings and ...
Walkden-Brown S W - - 1994
Each month, for 15 months, the testes and epididymides were recovered from five Australian cashmere bucks selected at random from a group of mature bucks (initial n = 116) at pasture (location 29 degrees S, 153 degrees E). The extent of seasonal change in testicular and epididymal sperm reserves was ...
Takei N - - 1994
The question of whether prenatal exposure to influenza epidemics is associated with an increased risk of later schizophrenia remains controversial. The authors examined this relationship, using data on the dates of birth and gender of 3,827 schizophrenic patients born in England and Wales between 1938 and 1965 and first admitted ...
Wolański N - - 1994
The paper is focused on the seasonal pattern of birth and occurrence of menarche in different populations. The material collected in 1988/89 consists of 522 girls and their 249 mothers from schools of Merida, and of 135 girls and their 66 mothers from Progreso (Yucatan, Mexico). Occurrence of a biorhythm ...
Pallast E G - - 1994
In this study we examined whether the well-known winter excess of schizophrenic births exists among Dutch schizophrenia patients when statistical artifacts such as the age-incidence and age-prevalence effects are avoided and, if so, whether the seasonal preovulatory release of overripe ovum (SPrOO) hypothesis, that is, seasonally bound ovopathy, might be ...
Aschauer H N - - 1994
We examined the birth distribution of 2,450 schizophrenic and 682 schizoaffective patients first admitted between 1971 and 1992 to the University Hospital for Psychiatry in Vienna. Our data showed an excess of schizophrenic births in the first quarter of the year and a deficit in the third quarter compared with ...
Takei N - - 1993
We examined the relationship between influenza epidemics and the number of schizophrenic and affective psychotic individuals born each month between 1938 and 1965 in England and Wales. Increased death rates from influenza were followed 5 months later by a significant increase in schizophrenic births and a concurrent fall in the ...
Wen X - - 1993
Two samples of births were used to examine the effect of son preference and population policy on sex ratios in Hebei and Shaanxi provinces of China. The results from all births to women aged 15-49 in the 1985 In-Depth Fertility Survey indicated a strong son preference but no clear policy ...
Abassa P K - - 1993
Birth and weaning data on zebu cattle (Gudali and Wakwa) of north Central Cameroon were analysed. Calf breed, sire and sex had significant effects (P < 0.01 or 0.001) on birth weight while parity and season of birth were not important. Calf breed, sex, season of birth and birth weight ...
Milham S S - - 1993
In the years of 1980-1990, there were 139 birth records filed in Washington State on which father's occupation was designated as "carbon setter," a job title specific to aluminum reduction plants of the prebake type. Fifty-three (53) of these records specified sex of the birth as male, while 86 records ...
Livingston R - - 1993
OBJECTIVE: Increased risk for certain psychiatric disorders has been associated with season of birth. This study was undertaken to look for hypothesized season-of-birth effects for dyslexia, schizophrenia spectrum disorders, and neurological soft signs in children and adolescents. METHOD: Month of birth and the diagnostic findings in question were examined based ...
Evans S J - - 1993
The seasonality of canine births was investigated using records from the Kennel Club and the breeding centre for the Guide Dogs for the Blind Association. In these populations a distinct seasonal pattern was found with a greater number of puppies being born in the summer months than the winter. The ...
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 ...
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