Abstract:
:This study investigates whether consumption of fish during pregnancy may prolong gestation or increase fetal growth. From 1984 to 1987, 11,980 pregnant Danish women filled out a questionnaire while they were in the 36th week of gestation; this was 83% of all such women living in two geographically defined areas. The women were divided into four strata dependent on having consumed a fish meal 0, 1-2, 3-4, or 5+ times during the previous month. In non-smokers, a one level increase in fish consumption was, after adjusting for 19 other variables in a multiple regression model, found to be associated with an increase of 11 g in placental weight, 0.08 cm in head circumference and 16 g in birthweight (95% confidence intervals (CI) 5 to 17 g (p = 0.0002), 0.02 to 0.14 cm (p = 0.02), and -2 to 34 g (p = 0.09), respectively); no associations with birth length or gestational age could be detected (95% Cl-0.07 to 0.11 cm (p = 0.7) and -0.82 to 0.05 days (p = 0.2), respectively, per level change in fish consumption). None of the associations seen in non-smokers were seen in smokers. We postulate that the associations seen in non-smokers could be due to marine n-3 fatty acids improving placental blood flow by increasing the ratio of prostacyclins to thromboxane. Smoking may possibly interfere with this mechanism via nicotine's inhibitory effect on platelet thromboxane production.
journal_name
Int J Epidemioljournal_title
International journal of epidemiologyauthors
Olsen SF,Olsen J,Frische Gdoi
10.1093/ije/19.4.971subject
Has Abstractpub_date
1990-12-01 00:00:00pages
971-7issue
4eissn
0300-5771issn
1464-3685journal_volume
19pub_type
杂志文章abstract::The extensive rubella epidemic which occurred in Israel in 1972, had a considerable impact on the population at risk: 1. The spread of rubella infection into the community strongly influenced the extent of legal abortions: (a) 1 x 5 as many abortions for all causes were recorded in the epidemic year, as compared to th...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/4.4.331
更新日期:1975-12-01 00:00:00
abstract::The risk of cancer was evaluated among 77,952 asthma patients with bronchial asthma. The series was obtained through linkage of two registers: the Finnish Social Insurance Institution's file of asthma patients and the Finnish Cancer Registry. There was a significant excess risk of lung cancer in both sexes, the standa...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/22.6.976
更新日期:1993-12-01 00:00:00
abstract:BACKGROUND:Mycobacterium leprae (M. leprae) soluble antigen (MLSA) reagents have been developed with the aim of finding a reagent, comparable to tuberculin, which could identify individuals infected with the leprosy bacillus. They have yet to be evaluated fully in human populations. METHODS:More than 15000 individuals...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/27.4.713
更新日期:1998-08-01 00:00:00
abstract:BACKGROUND:So far, no randomized controlled trials with a mean mammographic screening interval of > or = 2 years has demonstrated statistically significant mortality reduction for women younger than age 50. The issue of screening frequency is vital in detection of primary breast cancer. METHODS:The study group consist...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/29.5.803
更新日期:2000-10-01 00:00:00
abstract:BACKGROUND:In epidemiological studies researchers often depend on proxies to obtain information when primary subjects are unavailable. However, relatively few studies have performed formal statistical inference to assess agreement among proxy informants and primary study subjects. In this paper, we consider inference p...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/29.6.1070
更新日期:2000-12-01 00:00:00
abstract:Background:Most existing research on the association of parental education with childhood undernutrition focuses on maternal education and often ignores paternal education. We systematically investigate differences in maternal and paternal education and their association with childhood undernutrition. Methods:One hund...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyw133
更新日期:2017-02-01 00:00:00
abstract::We describe our experience in several settings, following a suggestion in 1983 to add questions on the smoking status of the deceased on the UK death certificate as an effective way to monitor the evolution of the smoking epidemic. In South Africa in 1997 and in Tianjin Municipality, China, in 2010, questions about th...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyy226
更新日期:2019-04-01 00:00:00
abstract::Specificity of association between putative risk factor and disease under study is important to inference on causality. Nevertheless many studies investigate mortality of a single disease without comparison with a control. Age-standardized proportional mortality ratios make single disease studies into case-control stu...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/20.4.984
更新日期:1991-12-01 00:00:00
abstract:BACKGROUND:Recently, using a counterfactual framework, a causal mediation analysis has been formalized to decompose the total effect of a time-fixed exposure on an outcome into four components that can be loosely defined as being components due to mediation only, interaction only, mediated interaction and neither. The ...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyy252
更新日期:2019-08-01 00:00:00
abstract::In tropical Africa, parasitic and infective diseases remain the predominant causes of mortality and morbidity, and health and epidemiological services are poorly developed. Experience elsewhere has shown the value of surveillance in the control of communicable diseases and this paper contains a brief review of the use...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/5.1.39
更新日期:1976-03-01 00:00:00
abstract::An outbreak of typhoid fever occurred in Chu-Tung township, Taiwan, with dates of onset from 6 July to 8 August, 1983. Fifty-four cases were hospitalized, of which 52 were laboratory confirmed. A chloramphenicol-resistant strain of Salmonella typhi was isolated from patients' blood samples. A community survey of 2772 ...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/18.1.254
更新日期:1989-03-01 00:00:00
abstract::The relationship of parents' cigarette smoking to outcome of pregnancy-implications as to the problem of inferring causation from observed associations. Amer J Epidem 1971;93:443-456. Nearly 10,000 white and more than 3000 black women were interviewed early in pregnancy on a variety of medical, genetic, environmental,...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyu160
更新日期:2014-10-01 00:00:00
abstract::The reliability of casual blood pressures for reflecting blood pressure status and predicting cardiovascular sequelae of hypertension was examined in the Framingham cohort of 5209 men and women followed for 18 years. Blood pressures were more variable in persons with higher levels. After controlling for pressure level...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/5.4.327
更新日期:1976-12-01 00:00:00
abstract:Background:Analysis of physical activity usually focuses on a small number of summary statistics derived from accelerometer recordings: average counts per minute and the proportion of time spent in moderate-vigorous physical activity or in sedentary behaviour. We show how bigrams, a concept from the field of text minin...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyx093
更新日期:2017-12-01 00:00:00
abstract:BACKGROUND:Increases in measles antibodies without rash-illnesses have been documented in previously vaccinated children exposed to measles cases. The phenomenon has been incompletely evaluated in young unvaccinated infants with immunity of maternal origin. METHODS:Monthly cohorts of newborns were prospectively random...
journal_title:International journal of epidemiology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1093/ije/28.1.147
更新日期:1999-02-01 00:00:00
abstract:BACKGROUND:To determine the presence of interaction in epidemiologic research, typically a product term is added to the regression model. In linear regression, the regression coefficient of the product term reflects interaction as departure from additivity. However, in logistic regression it refers to interaction as de...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dym157
更新日期:2007-10-01 00:00:00
abstract:BACKGROUND:Educational attainment is associated with many life outcomes, including income, occupation and many health and lifestyle variables. Many researchers use it as a control variable in epidemiological and other social scientific studies, often without specifying exactly what environmental effects or set of perso...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyq072
更新日期:2010-10-01 00:00:00
abstract::Blood samples from 382 children between the ages of one and 15 years were tested for anti-chlamydial antibody. A low prevalence of antibody against Chlamydia trachomatis was found among children under the age of seven years. Antibody against the Chlamydial agent C IOL-207 was rare before the age of five years, but was...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/13.4.491
更新日期:1984-12-01 00:00:00
abstract:BACKGROUND:In designing prevention strategies, it may be useful to understand how early and midlife cardiovascular disease risk factor (CVDRF) exposures affect outcomes that primarily occur in mid to late life. Few single US cohorts have followed participants from early adulthood to late life. METHODS:We pooled four p...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyy264
更新日期:2019-06-01 00:00:00
abstract::A comparative study of the effects of combined oral contraceptives (OC) on coagulation and fibrinolytic variables using standardized laboratory technique and methodology has been performed in Dublin (Ireland), Salvador (Brazil), Santiago (Chile) and Singapore. Of 777 entrants to the study, 622 were randomly allocated ...
journal_title:International journal of epidemiology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1093/ije/20.4.913
更新日期:1991-12-01 00:00:00
abstract:BACKGROUND:Evidence suggests that in utero exposure to undernutrition and overnutrition might affect adiposity in later life. Epigenetic modification is suggested as a plausible mediating mechanism. METHODS:We used multivariable linear regression and a negative control design to examine offspring epigenome-wide DNA me...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyv042
更新日期:2015-08-01 00:00:00
abstract::Management of medical services necessitates decisions regarding the possibly ineffective treatment programmes, hospitals and (even) individual practitioners. Although rigorous evaluations of effectiveness can only be achieved by randomized trials there has been, in recent years, much increase in audit (or peer review)...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/12.4.482
更新日期:1983-12-01 00:00:00
abstract::This paper discusses the application of Popper's philosophy to epidemiological research, examining in particular the problems of replication without risk of refutation, of mistaking statistical sophistication for deductive inference, and of dealing with causality at a general level. An example is given of a Popperian ...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/4.3.159
更新日期:1975-09-01 00:00:00
abstract::In 1983 and 1984, surveys were conducted in four Chinese population samples, urban and rural for both Beijing and Guangzhou, as part of PRC-USA collaborative research in cardiovascular and cardiopulmonary epidemiology. Serum total cholesterol (TC), HDL-cholesterol (HDL-C), and triglycerides (TG) were measured in 4280 ...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/21.5.893
更新日期:1992-10-01 00:00:00
abstract:BACKGROUND:Small-for-gestational-age (SGA) birth is commonly used as a proxy for fetal growth restriction, but also includes constitutionally small infants. Genetic factors account for almost half of the risk of SGA birth. We estimated perinatal risks of SGA birth using both population-based and within-sibling analyses...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyy196
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:The impact and cost-effectiveness of couples' voluntary HIV counselling and testing (CVCT) has not been quantified in real-world settings. We quantify cost-per-HIV-infection averted by CVCT in Zambia from the donor's perspective. METHODS:From 2010 to 2016, CVCT was established in 73 Zambian government clini...
journal_title:International journal of epidemiology
pub_type: 杂志文章,多中心研究
doi:10.1093/ije/dyy203
更新日期:2019-02-01 00:00:00
abstract:BACKGROUND:We analyse the NHANES III sample to assess the suitability of measured stature and sitting height to estimate leg length (tibia + femur) and predict fatness. High rates of overweight in the United States population may lead to greater gluteo-femoral fat mass which will increase sitting height and artificiall...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dym254
更新日期:2008-02-01 00:00:00
abstract:BACKGROUND:We reported in a recent study that parity was inversely related to the incidence of Hodgkin's disease (HD) in Norwegian women younger than 56. In this study, another data set was used to estimate the parity effects on incidence at higher ages, and two different data sets were used to assess how parity influe...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/25.4.737
更新日期:1996-08-01 00:00:00
abstract:BACKGROUND:Several studies have been conducted to estimate the population prevalence of hypertension, or its diagnosis and treatment. There is no multinationally comparable information on the prevalence of hypercholesterolaemia, or its diagnosis and treatment, since individual studies are often not directly comparable....
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/dyi056
更新日期:2005-02-01 00:00:00
abstract::One task faced by public health surveillance practitioners is the timely identification of data patterns that might suggest the onset of an epidemic period. Many available techniques for analysis of surveillance data are based on sequential procedures, which predict expected numbers of cases and compare this estimate ...
journal_title:International journal of epidemiology
pub_type: 杂志文章
doi:10.1093/ije/23.2.408
更新日期:1994-04-01 00:00:00