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Deanna Ashley Maureen Samms-Vaughan Rosemary Greenwood Jean Golding 《Paediatric and perinatal epidemiology》1994,8(S1):158-165
Summary. The Jamaican Perinatal Mortality Survey collected data that have been used in this paper to estimate: (1) the rate of multiple deliveries on the island; (2) the way in which this varies with demographic features; and (3) the causes of perinatal mortality among twins on the island.
The survey consisted of two phases: a study of all births in the months of September and October 1986 (the cohort months) and a study of all perinatal deaths in the 12 months from 1 September 1986 to 31 August 1987.
Among the 10408 pregnancies in the cohort months, 99(1.0%) were multiple pregnancies. The twinning rate showed statistically significant trends with maternal age and parity but no association with social factors.
Among the 2020 perinatal deaths occurring in the 12-month period, 173 (8.6%) were twins, with particularly high contribution to the Wigglesworth group 'deaths from immaturity'. Mortality rate of twins was significantly lower if mothers resided in areas where there were good obstetric and paediatric facilities. 相似文献
The survey consisted of two phases: a study of all births in the months of September and October 1986 (the cohort months) and a study of all perinatal deaths in the 12 months from 1 September 1986 to 31 August 1987.
Among the 10408 pregnancies in the cohort months, 99(1.0%) were multiple pregnancies. The twinning rate showed statistically significant trends with maternal age and parity but no association with social factors.
Among the 2020 perinatal deaths occurring in the 12-month period, 173 (8.6%) were twins, with particularly high contribution to the Wigglesworth group 'deaths from immaturity'. Mortality rate of twins was significantly lower if mothers resided in areas where there were good obstetric and paediatric facilities. 相似文献
34.
Prevalence and Predictors of Adolescent Dating Violence 总被引:1,自引:0,他引:1
Patricia Y. Symons MSN RN CRNP Maureen W. Groër PhD RN Patricia Kepler-Youngblood MSW Victoria Slater MSN RN 《Journal of child and adolescent psychiatric nursing》1994,7(3):14-23
This study of 561 rural North Carolina adolescents examined relationships among race, parental educational level, family structure, parental discipline, family violence exposure, and dating violence experiences. The sample was predominantly female (77%), with 40% black and 58% white. The subjects ranged in age from 15 to 20 years; 80% of the adolescents were 16–18. Dating violence experiences were assessed by a researcher-constructed instrument measuring warning signs of potential violence and actual violent experiences. The results suggested that recognition of abusive relationships is difficult, with many adolescents denying such a relationship but actually reporting numerous abusive events. Sixty percent had experienced violent acts during dating relationships; 24% reported extreme violence (episodes of rape, use of weapons). More than 20% of the adolescents reported family violence and 2.2% reported family sexual abuse. The study suggests new avenues for research in adolescent date violence, and for interventions with high risk groups. 相似文献
35.
Justin C Wise Rose A Sevcik Robin D Morris Maureen W Lovett Maryanne Wolf 《J. Speech Lang. Hear. Res.》2007,50(4):1093-1109
PURPOSE: Some researchers (F. R. Vellutino, F. M. Scanlon, & M. S. Tanzman, 1994) have argued that the different domains comprising language (e.g., phonology, semantics, and grammar) may influence reading development in a differential manner and at different developmental periods. The purpose of this study was to examine proposed causal relationships among different linguistic subsystems and different measures of reading achievement in a group of children with reading disabilities. METHODS: Participants were 279 students in 2nd to 3rd grade who met research criteria for reading disability. Of those students, 108 were girls and 171 were boys. In terms of heritage, 135 were African and 144 were Caucasian. Measures assessing pre-reading skills, word identification, reading comprehension, and general oral language skills were administered. RESULTS: Structural equation modeling analyses indicated receptive and expressive vocabulary knowledge was independently related to pre-reading skills. Additionally, expressive vocabulary knowledge and listening comprehension skills were found to be independently related to word identification abilities. CONCLUSION: Results are consistent with previous research indicating that oral language skills are related to reading achievement (e.g., A. Olofsson & J. Niedersoe, 1999; H. S. Scarborough, 1990). Results from this study suggest that receptive and expressive vocabulary knowledge influence pre-reading skills in differential ways. Further, results suggest that expressive vocabulary knowledge and listening comprehension skills facilitate word identification skills. 相似文献
36.
Maureen Mayhew 《Canadian Medical Association journal》2002,167(12):1371-1373
37.
The incidence of primary cutaneous malignant melanoma is increasing in the developed countries. Cutaneous malignant melanomas diagnosed in our Department over a period of fifty years from 1930 to 1980 were examined to see if there was any change in their histological features. In 1930 and 1955, over 90% of malignant melanomas presented as tumours infiltrating deep into the subepithelial tissue. By 1980, 55% of tumours presented with deeply infiltrating lesions and only 20% occurred at a stage where adequate local excision could provide hope of a cure. There is thus a need for greater awareness among the medical profession and the public if we hope to be able to treat malignant melanomas at an early stage. 相似文献
38.
Goddijn Mariette; Joosten Hannie; Knegt Lia; van der Veen Fulco; Franssen Maureen; Bonsel Gouke; Leschot Nico 《Human reproduction (Oxford, England)》2004,19(9):2172
Sir, We thank Mayumi Sugiura-Ogasawara et al. for their commentson our paper (Goddijn et al., 2004 相似文献
39.
DRAK2 is a member of the death-associated protein (DAP)-like family of serine/threonine kinases. Members of this family induce apoptosis in various cell types. DRAK2, in particular, is specifically expressed in T cells and B cells, and it is differentially regulated during T cell development. To determine whether DRAK2 regulates lymphocyte apoptosis, we produced Drak2(-/-) mice. Contrary to our expectations, Drak2(-/-) T cells did not demonstrate any defects in apoptosis or negative selection; however, T cells from Drak2(-/-) mice exhibited enhanced sensitivity to T cell receptor-mediated stimulation with a reduced requirement for costimulation. These results provide evidence that DRAK2 raises the threshold for T cell activation by negatively regulating signals through the TCR. In contrast to other models of T cell hypersensitivity, Drak2(-/-) mice were remarkably resistant to experimental autoimmune encephalomyelitis (EAE). These results expose a new pathway regulating T cell activation and highlight the intricacies of induced autoimmune disease. 相似文献
40.
Development and Evaluation of a Tetraplex Flow Cytometric Assay for Quantitation of Serum Antibodies to Neisseria meningitidis Serogroups A, C, Y, and W-135 下载免费PDF全文
Gouri Lal Paul Balmer Helen Joseph Maureen Dawson Ray Borrow 《Clinical and Vaccine Immunology : CVI》2004,11(2):272-279
A rapid and simple method for the simultaneous quantitation of serum immunoglobulin G (IgG) antibodies specific for Neisseria meningitidis serogroups A, C, Y, and W-135 was developed and evaluated. Four bead sets were generated, each conjugated with one of the meningococcal capsular polysaccharides (A, C, Y, or W-135) and serologically assessed by the use of antimeningococcal international reference sera. Cross-reactivity studies demonstrated no inhibition between monoplex and multiplex assays, and the assay was linear over a 24-fold serum dilution range. Inhibition studies demonstrated that the assay is specific, with <25% heterologous inhibition occurring. The assay was also found to have low intra- and interassay variations and limits of detection ≤650 pg/ml. A comparison of the meningococcal bead assay with the standardized meningococcal enzyme-linked immunosorbent assay showed a good correlation between the IgG concentrations obtained by each assay. The tetraplex assay has the potential to be an important addition to the serologic evaluation of meningococcal capsular polysaccharide conjugate vaccines. 相似文献