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Nationwide Cohort (nationwide + cohort)

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Medical Sciences100%

Terms modified by Nationwide Cohort

  • nationwide cohort study
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    Selected Abstracts

    Low risk of overt nephropathy after 24 yr of childhood-onset type 1 diabetes mellitus (T1DM) in Norway

    PEDIATRIC DIABETES, Issue 5 2006
    Torild Skrivarhaug
    Aim:, To estimate the risk of diabetic nephropathy and associated risk factors in a nationwide cohort of childhood-onset type 1 diabetes mellitus (T1DM) and 19,30 yr of diabetes duration. Methods:, Patients diagnosed with childhood-onset T1DM (<15 yr) from 1973 through 1982, who previously (1989,1990) participated in a clinical examination to assess diabetic complications, were invited for a new examination in 2002,2003. Of 355 eligible patients, 299 participated (84.2%), and complete urine samples for evaluation of albuminuria were obtained from 295 patients, with a mean age of 33 yr (range 20.9,44.0) and mean diabetes duration of 24 yr (range 19.3,29.9). Persistent microalbuminuria and overt nephropathy [albumin excretion rate (AER) 15,200 ,g/min and AER > 200 ,g/min, respectively] in at least two out of three consecutive overnight urine samples were defined as diabetic nephropathy. Results:, Overt nephropathy was found in 7.8% [95% confidence interval (CI) 4.7,10.9] and persistent microalbuminuria in 14.9% (95% CI 10.8,19.0) of the subjects. Hemoglobin A1c (HbA1c) (p = 0.001), systolic blood pressure (BP) (p = 0.002), total cholesterol (p = 0.019), and C-reactive protein (CRP) (p = 0.019) were associated with diabetic nephropathy. Significant predictors in 1989,1990 for the development of diabetic nephropathy in 2002,2003 were HbA1c (p < 0.001), AER (p = 0.007), and cholesterol (p = 0.022). Conclusions:, In a subgroup of patients diagnosed with childhood-onset T1DM in 1973,1982, 7.8% had overt nephropathy after 19,30 yr of diabetes duration, which is low compared with studies from other countries. HbA1c, systolic BP, total cholesterol, and CRP were each independently associated with diabetic nephropathy. [source]

    Acquired pure red cell aplasia associated with malignant lymphomas: A nationwide cohort study in Japan for the PRCA Collaborative Study Group

    AMERICAN JOURNAL OF HEMATOLOGY, Issue 3 2009
    Makoto Hirokawa
    Pure red cell aplasia (PRCA) has been reported in association with lymphoma as one of the autoimmune diseases seen during the course of lymphoid malignancies. However, the relation of PRCA with the underlying lymphomas remains unclear. The aim of this study was to clarify the histologic subtypes of lymphomas, the chronological sequence of anemia and lymphoma, and the response to treatment. We conducted a nationwide survey in Japan. From a cohort of 185 PRCA patients, 8 patients with lymphoma were evaluated. Histologic subtypes varied and the lymphoma was of the B-cell type in four cases and of the T-cell type in four. Four patients simultaneously developed PRCA and lymphoma. Three patients developed PRCA following lymphoma, two of whom developed anemia during remission of lymphoma. PRCA preceded lymphoma in one patient. Effective chemotherapy was associated with remission of anemia in concurrent lymphoma and PRCA. Overall, anemia responded to chemotherapy and/or immunosuppressive therapy in seven patients. In four responding patients, PRCA remained in durable remission without maintenance immunosuppressive therapy, which is different from a recurrent feature of idiopathic PRCA. We suggest that the mechanism of lymphoma-associated PRCA is heterogeneous and that durable maintenance-free remission of anemia can be obtained in some patients. Am. J. Hematol., 2009. © 2008 Wiley-Liss, Inc. [source]

    Perinatal mortality and morbidity in a nationwide cohort of 529 688 low-risk planned home and hospital births

    BJOG : AN INTERNATIONAL JOURNAL OF OBSTETRICS & GYNAECOLOGY, Issue 9 2009
    A De Jonge
    Objective, To compare perinatal mortality and severe perinatal morbidity between planned home and planned hospital births, among low-risk women who started their labour in primary care. Design, A nationwide cohort study. Setting, The entire Netherlands. Population, A total of 529 688 low-risk women who were in primary midwife-led care at the onset of labour. Of these, 321 307 (60.7%) intended to give birth at home, 163 261 (30.8%) planned to give birth in hospital and for 45 120 (8.5%), the intended place of birth was unknown. Methods, Analysis of national perinatal and neonatal registration data, over a period of 7 years. Logistic regression analysis was used to control for differences in baseline characteristics. Main outcome measures, Intrapartum death, intrapartum and neonatal death within 24 hours after birth, intrapartum and neonatal death within 7 days and neonatal admission to an intensive care unit. Results, No significant differences were found between planned home and planned hospital birth (adjusted relative risks and 95% confidence intervals: intrapartum death 0.97 (0.69 to 1.37), intrapartum death and neonatal death during the first 24 hours 1.02 (0.77 to 1.36), intrapartum death and neonatal death up to 7 days 1.00 (0.78 to 1.27), admission to neonatal intensive care unit 1.00 (0.86 to 1.16). Conclusions, This study shows that planning a home birth does not increase the risks of perinatal mortality and severe perinatal morbidity among low-risk women, provided the maternity care system facilitates this choice through the availability of well-trained midwives and through a good transportation and referral system. [source]

    Long-term health-related quality of life following surgery for oesophageal cancer

    BRITISH JOURNAL OF SURGERY (NOW INCLUDES EUROPEAN JOURNAL OF SURGERY), Issue 9 2008
    T. Djärv
    Background: The aim of the study was to assess health-related quality of life (HRQL) in patients with surgically cured oesophageal cancer. Methods: A Swedish nationwide cohort of patients undergoing oesophagectomy for cancer between April 2001 and January 2004 was studied prospectively, and compared with a Swedish age- and sex-adjusted reference population. Validated European Organisation for Research and Treatment of Cancer quality of life questionnaires were used to assess HRQL at 6 months and 3 years after surgery. A mean score difference of 10 or more between groups was considered clinically relevant and tested further for statistical significance. Results: Of 358 patients, 117 (32·7 per cent) survived for at least 3 years. Of these, 87 patients (74·4 per cent) responded to the questionnaires. Six months after surgery, most aspects of HRQL were substantially worse than in the reference population with no improvement at 3 years. Patients alive at 3 years reported significantly poorer role and social function, and significantly more problems with fatigue, diarrhoea, appetite loss, nausea and vomiting, than in the reference population. Conclusion: HRQL in long-term survivors after oesophagectomy does not improve between 6 months and 3 years after surgery, and is worse than that in a comparable reference population. Copyright © 2008 British Journal of Surgery Society Ltd. Published by John Wiley & Sons, Ltd. [source]

    Prevalence and independent risk factors for hearing loss in NICU infants

    ACTA PAEDIATRICA, Issue 8 2007
    Elysée TM Hille
    Abstract Aim: To determine the prevalence and independent relationship between hearing loss and risk factors in a representative neonatal intensive care unit (NICU) population. Methods: Automated auditory brainstem response (AABR) hearing screening has been introduced since 1998 in the Dutch NICUs. After a second AABR failure, diagnostic ABR was used to establish diagnosis of hearing loss. Newborns who died before the age of 3 months were excluded. In the present study only the NICU infants who were born with a gestational age <30 weeks and/or a birth weight <1000 g between October 1, 1998 and January 1, 2002 were included. Risk factors included in the study were familial hearing loss, in utero infections, craniofacial anomalies, birth weight <1500g, hyperbilirubinemia, ototoxic medications, cerebral complications, severe birth asphyxia, assisted ventilation ,5 days and syndromes. Results: A nationwide cohort of 2186 newborns were included. Mean gestational age was 28.5 weeks (SD 1.6) and mean birth weight was 1039 g (SD 256). Prevalence of uni- or bilateral hearing loss was 3.2% (71/2186; 95% CI 2.6,4.1). Multivariate analysis revealed that the only independent risk factors for hearing loss were severe birth asphyxia (OR 1.7; 95% CI 1.0,2.7) and assisted ventilation ,5 days (OR 3.6; 95% CI 2.1,6.0). Conclusion: The prevalence of hearing loss in a representative NICU population was 3.2%. Independent risk factors for hearing loss were severe birth asphyxia and assisted ventilation ,5 days. [source]