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Duccini dal Colletto G M - - 2001
CONTEXT: Epidemiological studies on twin births have been motivated mostly by the positive correlation between twinning rate and human fertility, prematurity, low birth weight, increased risk of infant death and long term risk for morbidity. OBJECTIVE: This paper intends to estimate the incidence of multiple births in a private hospital ...
van Os J - - 2001
BACKGROUND: We investigated whether low birth weight constitutes a causal risk factor for child problem behavior, using a variation of the co-twin control method. METHODS: In a representative sample of 745 twin pairs (monozygotic: 324 pairs), birth weight was recorded at birth and child problem behavior at mean age 10 ...
Lummaa V - - 2001
The number and gender of offspring produced in a current reproductive event can affect a mother's future reproductive investment and success. I studied the subsequent reproductive outcome of pre-industrial (1752-1850) Finnish mothers producing twins versus singletons of differing gender. I predicted that giving birth to and raising twins instead of ...
Loos R J - - 2001
An adverse intra-uterine environment has been associated with abdominal fat distribution in singletons. Twins often have a low birth weight and a short gestation. Therefore, they may have an increased risk to develop abdominal obesity. Furthermore, monozygotic monochorionic twins (MZ MC) have a larger intra-pair birth weight difference compared to ...
Imaizumi Y - - 2001
The infant mortality rate (IMR) was analysed among single, twin and triplet births during the period from 1995 to 1998 using Japanese Vital Statistics. This study also investigated the effects of order of multiple births and of birthweight on the IMR. Proportions of neonatal deaths among total infant deaths were ...
Sadrzadeh S - - 2001
In this study we examine the hypothesis that monozygotic (MZ) twins in historical databases are less discordant for birth weight due to negative selection of severely discordant MZ twins. Furthermore, we test the hypothesis that MZ twins are less discordant for birth weight when comparing a volunteer based twin registry ...
Christensen K - - 2001
The intrauterine growth patterns for twins are characterized by normal development during the first two trimesters and reduced growth during the third trimester. According to the fetal origins hypothesis this growth pattern is associated with risk factors for cardiovascular morbidity and mortality. We studied cause-specific mortality of 19,986 Danish twin ...
Hohwy J - - 2001
The purpose of this study was to examine the genetic structure of the typical commensal Streptococcus mitis biovar 1 in its natural habitat in the human oral cavity and pharynx and to investigate the role that selected microbial properties and host, spatial, and temporal factors play in determining the structure ...
Redline R W - - 2001
Abnormal growth in one or both twins may contribute to the increased morbidity and mortality observed in twin gestation. Our objective in this retrospective study of all twin pregnancies delivered at our hospital (n = 240) over a 2-year period was to study the relationship between placental lesions and abnormal ...
Loos R J - - 2001
OBJECTIVE: To assess the relation of umbilical cord insertion and fusion of placentas with birthweight in monozygotic monochorionic, monozygotic dichorionic, and dizygotic twins. DESIGN: A prospective population study. POPULATION: 4529 liveborn twin pairs whose birthweight was recorded, placentas were examined, and site of umbilical cord insertion was determined after delivery. ...
Katz J - - 2001
BACKGROUND: Twin pregnancies are common but there are few data on rates of twinning or survival of liveborn twin infants in developing countries. METHODS: The rates of multiple births were calculated in a population-based cohort of married women of childbearing age who were enrolled in a randomized community trial to ...
Luna F - - 2001
This study attempted to analyze the effect of several factors on the stillbirth pattern in a relatively isolated rural population, La Alpujarra (Spain), during the first half of the 20th century. The study was a retrospective analysis from a total sample of 2199 births to 525 mothers, allowing for birth ...
Rydhstroem H - - 2001
The aim of this research was to study fetal and infant mortality in Sweden between 1973 and 1996 in twins vs singletons in relation to gestational duration. Analysis was of fetal and infant mortality based on the number of pregnancies at risk as the denominator rather than the number of ...
Harirah H - - 2001
BACKGROUND: Monoamniotic twins in a triplet gestation is a rare combination. Each condition is separately associated with significant perinatal morbidity and mortality. There are no data about the outcome and management of such gestations. CASE: We report a case of monoamniotic twins in a spontaneous dichorionic triplet gestation with a ...
Joseph K S - - 2001
OBJECTIVE: To examine the causes and consequences of the recent increase in preterm birth among twins. METHODS: We studied all twin births among residents of the province of Nova Scotia, Canada, between 1988 and 1997. Rates of preterm birth, preterm labor induction, preterm cesarean, small-for-gestational age (SGA), respiratory distress syndrome ...
Suri K - - 2001
OBJECTIVE: To determine if preterm infants of higher-order multiple (HOM) gestations have a significantly worse outcome during hospital stay when compared with preterm twins. STUDY DESIGN: Retrospective cohort analysis. METHODS: Perinatal outcome variables including gestational age (GA), birthweight, prenatal steroid use, cesarean section delivery rate, Apgar scores, and growth retardation ...
Wade T D - - 2001
OBJECTIVE: The authors investigated differences between twins in nine pairs of female monozygotic twins in the Australian Twin Registry who were discordant for lifetime bulimia nervosa. METHOD: The twins affected and unaffected by lifetime bulimia nervosa were compared on self-report measures, including a measure of parental bonding, four measures of ...
Hübinette A - - 2001
BACKGROUND: Epidemiological studies that used birthweight as a crude marker of fetal growth have suggested that low birthweight is associated with increased risk of coronary heart disease. Through investigation of this association within same-sexed twin pairs, confounding by genetic and early environmental factors can be greatly decreased. We undertook a ...
Herschel M - - 2001
A 31-year-old primigravida with twins had spontaneous rupture of the membranes at 32 weeks' gestation. On admission, because of contractions, the mother was started on tocolytic magnesium sulfate (MgSO4) along with betamethasone and prophylactic antibiotics. About a day later, she was found to have magnesium toxicity. Her serum total magnesium ...
Rydhstroem H - - 2001
The aim was to analyse the neonatal mortality related to mode of delivery for twins using a population-based registry. In all, 18,125 twins delivered in Sweden between 1991 and 1997, after excluding those with unknown gestational duration, were used to analyse the differences between groups of twins. Results showed the ...
Parkin N A - - 2001
The purpose of this study was to compare the skeletal and dental changes contributing to Class II correction with 2 modifications of the Twin-block appliance: Twin-block appliances that use a labial bow (TB1) and Twin-block appliances that incorporate high-pull headgear and torquing spurs on the maxillary central incisors (TB2). After ...
Oleszczuk J J - - 2001
OBJECTIVE: To utilize United States birth certificate data (years 1989-1991) to examine the effects of race/ethnicity on twinning rates. STUDY DESIGN: We used a database of birth certificate data for the United States (years 1989-1991) available on CD-ROM from the United States National Center for Health Statistics. This linked birth/infant ...
Zachos J - - 2001
Since 65 million years ago (Ma), Earth's climate has undergone a significant and complex evolution, the finer details of which are now coming to light through investigations of deep-sea sediment cores. This evolution includes gradual trends of warming and cooling driven by tectonic processes on time scales of 10(5) to ...
Ananth C V - - 2001
The authors performed a population-based epidemiologic study to evaluate and contrast risk factor profiles for placental abruption among singleton and twin gestations. Data were derived from linked US birth/infant death files for 1995 and 1996, comprising 7,465,858 singleton births and 193,266 twin births. The authors also evaluated effect modification between ...
Crawford J R - - 2001
BACKGROUND: The National Adult Reading Test (NART) is widely used in research and clinical practice as an estimate of pre-morbid or prior ability. However, most of the evidence on the NART's validity as a measure of prior intellectual ability is based on concurrent administration of the NART and an IQ ...
Riese M L - - 2001
Full-term neonate twins from weight-discordant pairs were compared with nondiscordant pairs on perinatal variables, minor physical anomalies, developmental status, and temperament/interactive measures. For perinatal variables, twins from the top quartile of discordance were found to be at higher risk than other twins. Both the total group of discordant twins and ...
Pharoah P O - - 2001
BACKGROUND: Monozygotic twins are at greater risk of dying and of serious morbidity than dizygotic twins, and both are at greater risk than singletons. This is only partly explained by the higher proportion of low birthweight infants among twins. AIM: To compare, in same sex and different sex twins, birth ...
Porter L M - - 2001
The callitrichines are a specialized radiation of primates that are characterized in part by variable social systems and cooperative infant care. Callimico goeldii, unlike the other callitrichines, have single rather than twin offspring, reducing the need for allocare and permitting synchronous breeding within groups. Low mortality rates among offspring and ...
Koehler S A - - 2001
Epidemiologic studies of sudden infant death syndrome (SIDS), the leading cause of death of infants during the postperinatal period (7-365 days), have mainly focused on the deaths of single infants. Simultaneous sudden infant death syndrome (SSIDS), the death of a pair of twins occurring at the same time, has received ...
Hacking D - - 2001
OBJECTIVE: To determine the effect of birth order on respiratory distress syndrome (RDS) in the outcome of twins in a large premature population managed in a modern neonatal intensive care unit. METHODS: An historical cohort study design was used to analyse the neonatal outcomes of 301 premature liveborn twin sibling ...
Williamson D - - 2001
We report the presence of calcified nodules on the heels secondary to heel sticks in healthy monozygotic twins in childhood. The subjects were born preterm at 34 weeks. The heels were normal at birth. While in the hospital, they underwent multiple heel sticks as a means of venesection. The wounds ...
Hartley R S - - 2001
OBJECTIVE: The aim of this study was to determine the gestational age at delivery associated with the lowest rates of perinatal mortality, respiratory distress syndrome, and long hospital stays among twins, with pair rates used to account for both infants in each twin pregnancy. STUDY DESIGN: We conducted a population-based ...
Sherer D M - - 2001
Twin gestations are at significant increased risk for adverse perinatal outcome. As a result, although prospective randomized data is lacking, increased fetal surveillance has been advocated for twins. Growth concordance is considered a reassuring sign in twins and conversely, discordancy to possibly reflect a hostile intrauterine environment at least to ...
Chauhan A R - - 2001
AIM: To study the changing trend in the delivery of transverse lie, and its effect on neonatal outcome, in a developing country. SUBJECTS AND METHOD: This is a retrospective study involving records of 12 years of all patients with transverse lie. Neonatal outcome of births by internal podalic version (IPV) ...
Parker J D - - 2001
Overall infant mortality rates have steadily declined in recent years. The goal of this study was to examine whether recent declines in infant mortality were similar for twins and singletons, and to assess the impact of differing birthweight distributions on these relationships. Linked birth and infant death records for 1985-86 ...
Blickstein I - - 2001
OBJECTIVE: To compare the incidence of twin births and their birth weight characteristics in mothers aged > or = 40 years with those of mothers aged 35-39 years. METHODS: We used a population-based cohort of Israeli twins delivered between 1993-98 to compare birth weight characteristics of 510 and 2102 twin ...
Mori H - - 2001
We counted nucleated red blood cells (NRBC) per 100 white blood cells (WBC) in the umbilical cord blood from 98 twins born to 49 women with uncomplicated twin pregnancies at > or = 34 weeks of gestation to better characterize NRBC in twins. Twelve women with monochorionic (MC) placentas and ...
Bird J A - - 2001
We examined the effect of time after birth and beta(3)-adrenergic agonist (Zeneca D7114) administration on uncoupling protein-1 (UCP1) abundance and thermoregulation in the lamb. Forty twin lambs, all born normally at term, were maintained at a cold ambient temperature of between 3 and 8 degrees C. At 0.5, 1.75, 5.25, ...
Leguizamón G - - 2001
OBJECTIVE: We tested the hypothesis that preterm delivery in women with twins or polyhydramnios is associated with enhanced expression and activity of cyclooxygenase type 2 in the amnion. STUDY DESIGN: We obtained amniotic tissue samples from women undergoing preterm delivery complicated by either twins or polyhydramnios and also from women ...
Webb R D - - 2001
We performed a retrospective study of twin pairs under 36 weeks gestation admitted to a regional neonatal unit over a three year period to determine if the larger twin of a twin pair is at increased risk of respiratory distress in the immediate postnatal period compared to the smaller twin. ...
Cheung Y B - - 2000
This study used data from the Swedish Medical Birth Registry between 1982 and 1995 to address the question of whether there is higher mortality in twins in relation to singletons of the same gestational age and to examine the optimal gestational age range for twins. A "varying-coefficient approach" was adopted ...
Meer A - - 2000
Twins born prematurely presented with choanal atresia and were successfully treated using a transnasal, endoscopically and microscopically controlled Ho:YAG-Laser assisted technique. One twin, who had bilateral choanal atresia was operated immediately, the other one, with unilateral choanal atresia, received surgery 8 months after birth. The rare feature of twins both ...
Korpelainen H - - 2000
The heritability and evolvability of lifespan in two socioeconomically different groups of humans, including birth cohorts for 1600-1800s, were investigated. Among the aristocratic Europeans, the heritability estimates based on offspring-mother regressions ranged from 0.46 to 0.89, while the estimates based on offspring-father regressions varied from 0.23 to 0.59. However, the ...
Cable J - - 2000
Reproductive success of Gvrodactylus salaris from River Lierelva was compared experimentally on 3 stocks of salmon (12.5 degrees C +/- 0.2). Isolated fish from 2 susceptible Norwegian stocks (Rivers Lier and Alta) and 1 resistant Baltic stock of salmon (River Neva) were infected with a single gravid worm in order ...
Hsu M J - - 2000
A population of Formosan macaques at Mt. Longevity exhibits an unusually high incidence of supernumerary nipples (polythelia: between 1-6 accessory nipples and/or areolae on 33% of adults), as well as a high rate of twinning (about 1% of births). The coexistence of these unusual traits suggests a connection, which is ...
Sumathipala A - - 2000
We report the process of adaptation into Sinhala of a questionnaire given to mothers of twins to determine zygosity. Adaptation and validation was carried out in three stages. Firstly, we used a nominal group to translate the English version and to assess the extent of agreement (consensus measurement) on the ...
Ostfeld B M - - 2000
Assisted reproductive techniques and fertility enhancing therapies have increased multiple births and, therefore, the risk of prematurity and its developmental consequences. Parent intervention is an effective source of compensation for the cognitive effects of prematurity. We hypothesized that relative to parents of preterm singletons, parents of preterm twins are less ...
Ondo W G - - 2000
To better understand genetic characteristics of restless legs syndrome (RLS) and identify nongenetic factors that may influence phenotype, the authors studied 12 identical twins in which at least one member expressed RLS. Ten of the 12 twin pairs were concordant for RLS symptoms. Despite the high concordance rate, the disease ...
Oguchi K - - 2000
Between 1983 and 1998 there were 23433 births at Kitasato University Hospital, including 359 births. A retrospective analysis was performed on 320 twin pairs analyzing survivability indexes with respect to fetal age, chorionicity and birth weight discordance. Furthermore, the paper illustrates an analysis of causes of neonatal deaths as well ...
Ziadeh S M - - 2000
OBJECTIVE: The purpose of this retrospective study was to evaluate. The mode of delivery on neonatal outcome of twins weighing <1500 g. METHODS: We reviewed the effect of birth order, presentation, and method of delivery on neonatal outcome in twin gestation under 1500 g at Princess Badeea' Teaching Hospital in ...
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