What is the difference between missing completely at random and missing at random?

abstract：BACKGROUND:Epidemiology in Latin America, as in the rest of the world, has been developed for the purpose of contributing towards understanding the causes and determinants of the phenomena of health and disease in specific contexts. However, in that continent it has specific characteristics. METHODS:The paper explores...

journal_title：International journal of epidemiology

authors： Barreto ML

更新日期：2004-10-01 00:00:00

abstract：:Mortality rates for cancers of 13 sites in 34 countries were analysed using two data reduction techniques, factor and cluster analysis. Factor analysis identified two independent underlying factors which appear to influence cancer mortality patterns. The first factor, which appears to be related to affluence, may repr...

journal_title：International journal of epidemiology

authors： Groves FD,Zavala DE,Correa P

更新日期：1987-12-01 00:00:00

abstract：BACKGROUND:A recent monograph by the International Agency for Research on Cancer (IARC) has identified indoor air pollution from coal usage as a known human carcinogen, while that from biomass as a probable human carcinogen. Although as much as 74% of the Indian population relies on solid fuels for cooking, very little...

journal_title：International journal of epidemiology

authors： Sapkota A,Gajalakshmi V,Jetly DH,Roychowdhury S,Dikshit RP,Brennan P,Hashibe M,Boffetta P

更新日期：2008-04-01 00:00:00

abstract：BACKGROUND:Melioidosis, or infection with Pseudomonas pseudomallei is an important cause of morbidity and mortality in South East Asia and Northern Australia. The epidemiology of melioidosis in Ubon Ratchatani, Northeast Thailand was studied over a 5-year period from 1987 to 1991. METHODS:Rates and, when possible, the...

journal_title：International journal of epidemiology

authors： Suputtamongkol Y,Hall AJ,Dance DA,Chaowagul W,Rajchanuvong A,Smith MD,White NJ

更新日期：1994-10-01 00:00:00

abstract：:Each of three consecutive cold seasons (November-March) in the town of Tiberias, Israel, was dominated by one particular rotavirus serotype causing acute diarrhoea in the community: the 1987/88 season by serotype-2; 1988/89 by serotype-1 and 1989/90 by serotype-4. Each season was also characterized by a particular pat...

journal_title：International journal of epidemiology

authors： Shif I,Silberstein I,Aboudy Y,Mendelson E,Mates A,Gotlieb-Stematsky T

更新日期：1992-04-01 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

authors： King CC,Chen CJ,You SL,Chuang YC,Huang HH,Tsai WC

更新日期：1989-03-01 00:00:00

abstract：BACKGROUND:Three recent studies have reported a decreased risk of non-Hodgkin lymphoma (NHL) for high ultraviolet (UV) radiation exposure. METHODS:We conducted a multicentre case-control study during 1998-2004 in France, Germany, Ireland, Italy and Spain, comprising 1518 cases of NHL, 268 cases of Hodgkin lymphoma, 24...

journal_title：International journal of epidemiology

authors： Boffetta P,van der Hel O,Kricker A,Nieters A,de Sanjosé S,Maynadié M,Cocco PL,Staines A,Becker N,Font R,Mannetje A',Goumas C,Brennan P

更新日期：2008-10-01 00:00:00

abstract：BACKGROUND:Aboriginal Australians experience a higher risk of diabetes than the general Australian population. In this paper, we conducted a nested case-control study to determine whether the presence of microalbuminuria and macroalbuminuria is associated with the development of diabetes among diabetes-free Aboriginal ...

journal_title：International journal of epidemiology

authors： Wang Z,Hoy WE

更新日期：2006-10-01 00:00:00

abstract：BACKGROUND:In July 2004 a strain-specific vaccine was introduced to combat an epidemic of group B meningococcal disease in New Zealand. We estimated the effectiveness of this vaccine in pre-school-aged children. METHODS:We conducted a cohort analysis of all children in New Zealand who were aged 6 months to <5 years at...

journal_title：International journal of epidemiology

authors： Galloway Y,Stehr-Green P,McNicholas A,O'Hallahan J

更新日期：2009-04-01 00:00:00

abstract：BACKGROUND:In the past, upward shifts of the so-called Preston curve, which relates life expectancy to national income, have contributed importantly to worldwide increases in life expectancy. These shifts were due to rapid diffusion of knowledge and technology for infectious disease control from high-income to low-inco...

journal_title：International journal of epidemiology

authors： Mackenbach JP,Looman CW

更新日期：2013-08-01 00:00:00

abstract：BACKGROUND:The long-term effects of infant vitamin D supplementation and status are unclear since there have been few controlled intervention trials and these have been small and contradictory. The Delhi Infant Vitamin D Supplementation (DIVIDS) trial found that supplementation of low-birthweight term infants with one ...

journal_title：International journal of epidemiology

authors： Trilok-Kumar G,Kaur M,Rehman AM,Arora H,Rajput MM,Chugh R,Kurpad A,Sachdev HS,Filteau S

更新日期：2015-06-01 00:00:00

abstract：BACKGROUND:Trisomy 18 (Edwards' syndrome, T18) is the second most common trisomy in man. We describe 118 children with regular T18 who were ascertained clinically and cytogenetically in the Kuwait Medical Genetics Centre during 1980-1997. METHODS:Ascertainment of T18 cases was performed shortly after birth. Chromosoma...

journal_title：International journal of epidemiology

authors： Naguib KK,Al-Awadi SA,Moussa MA,Bastaki L,Gouda S,Redha MA,Mustafa F,Tayel SM,Abulhassan SA,Murthy DS

更新日期：1999-08-01 00:00:00

abstract：:The published data for overall cancer incidence for the registries of Birmingham (UK) and Connecticut (US) show remarkable similarity for men but diverge for women. The incidence of cancer of the endometrium, ovary and breast in Connecticut is higher than in Birmingham, and in each case the menopausal dislocation in t...

journal_title：International journal of epidemiology

authors： Anthony HM

更新日期：1976-09-01 00:00:00

abstract：BACKGROUND:In many countries, little is known about adult mortality rates. New innovations are necessary to develop reasonable estimates from available information. One readily available resource is household survey data. While birth histories collected in surveys have produced reasonable estimates of child mortality, ...

journal_title：International journal of epidemiology

authors： Gakidou E,Hogan M,Lopez AD

更新日期：2004-08-01 00:00:00

abstract：BACKGROUND:This article analyses the epidemiological research developments in Latin America and the Caribbean (LAC). It integrates the series commissioned by the International Epidemiological Association to all WHO Regions to identify global opportunities to promote the development of epidemiology. METHODS:Health situ...

journal_title：International journal of epidemiology

authors： Barreto SM,Miranda JJ,Figueroa JP,Schmidt MI,Munoz S,Kuri-Morales PP,Silva JB Jr

更新日期：2012-04-01 00:00:00

abstract：:The infant mortality rate is not a good indicator of overall mortality or health status. Based on new empirical life tables from the UN Population Division, it can only predict life expectancy with 95% confidence to within a 14-year range. Two infant mortality rates must be nearly 80 units apart to be 95% confident th...

journal_title：International journal of epidemiology

authors： Murray CJ

更新日期：1988-03-01 00:00:00

abstract：:Mildmay Uganda (MUg), an HIV treatment centre near Kampala, the capital of Uganda, has entered into a memorandum of understanding to collaborate with Canadian researchers at the University of Ottawa to develop their research programme and develop an observational cohort database (the MUg observational cohort). The pri...

journal_title：International journal of epidemiology

authors： Funk A,Kanters S,Nansubuga M,Mwehire D,Featherstone A,Druyts E,Odiit M,Mills EJ

更新日期：2012-12-01 00:00:00

abstract：:The proportional relationships of the four numbers in a 2 x 2 table can be displayed using two types of box graphs. In one approach, a 'unitary square' is first divided according to the denominator proportions of the two groups formed in a cohort or case-control study, and then re-divided according to the numerator pr...

journal_title：International journal of epidemiology

authors： Feinstein AR,Kwoh CK

更新日期：1988-03-01 00:00:00

abstract：BACKGROUND:Human herpes virus 8 (HHV8) appears to be the primary aetiologic agent of Kaposi sarcoma (KS). To study the distribution of HHV8, a seroepidemiological study was carried out in western Sicily, where a high incidence rate of classical KS is well documented. METHODS:A total of 970 sera of healthy human immuno...

journal_title：International journal of epidemiology

authors： Perna AM,Bonura F,Vitale F,Viviano E,Di Benedetto MA,Ajello F,Villafrate MR,Prestileo T,Mancuso S,Goedert JJ,Romano N

更新日期：2000-02-01 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

authors： Sharp GC,Lawlor DA,Richmond RC,Fraser A,Simpkin A,Suderman M,Shihab HA,Lyttleton O,McArdle W,Ring SM,Gaunt TR,Davey Smith G,Relton CL

更新日期：2015-08-01 00:00:00

abstract：:It is usually necessary to estimate repeatability of a self-administered questionnaire from responses by subjects on just two occasions. It is shown that it is not possible to estimate false positive and false negative classification rates separately, but that an average correct classification can be calculated. This ...

journal_title：International journal of epidemiology

authors： Chinn S,Burney PG

更新日期：1987-03-01 00:00:00

abstract：BACKGROUND:Increasing physical activity (PA) and reducing sedentary behaviour (SB) have been associated with healthy ageing, but their effects when adjusted for reverse causation and selection bias remain unclear. METHODS:A deficits accumulation (DA) index based on the number and severity of 51 health deficits (0-100%...

journal_title：International journal of epidemiology

authors： García-Esquinas E,Ortolá R,Martínez-Gómez D,Damián J,Prina M,Rodríguez-Artalejo F,Pastor-Barriuso R

更新日期：2020-11-05 00:00:00

abstract：BACKGROUND:Previous evidence from the Alameda County Study indicated that residential area has an independent effect on risk for mortality, adjusting for a variety of important individual characteristics. The current research examined the effect of poverty area residence on risk for developing depressive symptoms and d...

journal_title：International journal of epidemiology

authors： Yen IH,Kaplan GA

更新日期：1999-02-01 00:00:00

abstract：BACKGROUND:Little is known about the relationship between physical functional health and long-term risk of coronary heart disease (CHD) independently of known risk factors in a general population. METHODS:Men and women aged 40-79 years at baseline who completed a health and lifestyle questionnaire and attended a healt...

journal_title：International journal of epidemiology

authors： Myint PK,Luben RN,Surtees PG,Wainwright NW,Wareham NJ,Khaw KT

更新日期：2010-08-01 00:00:00

abstract：OBJECTIVES:The aim of the present historical cohort study was to enhance the understanding of the unusual mortality pattern seen among seafarers. The main object was to describe the mortality pattern of Danish seafarers in recent years with special reference to the influence of accidents in the maritime workplace and a...

journal_title：International journal of epidemiology

authors： Hansen HL,Pedersen G

更新日期：1996-12-01 00:00:00

abstract：BACKGROUND:Neighbourhood socioeconomic status (SES) may affect rich and poor residents differentially. Two models are proposed. Model 1: living in a non-deprived neighbourhood is better for health because better collective material and social resources are available. Model 2: being poor (rich) relative to the neighbour...

journal_title：International journal of epidemiology

authors： Stafford M,Marmot M

更新日期：2003-06-01 00:00:00

abstract：:We have studied cytosolic low molecular weight phosphotyrosine phosphatase (cLMWPTP or ACP1) in 364 healthy puerperae from the population of Penne, in 155 diabetic puerperae from the population of Rome and in 349 consecutive normal newborn infants from the population of Rome. The data from these independent samples po...

journal_title：International journal of epidemiology

authors： Bottini E,Gloria-Bottini F,La Torre M,Lucarini N

更新日期：2001-04-01 00:00:00

abstract：:In Papua New Guinea a 15-year mortality follow-up was carried out among 2026 highlanders and 1734 coastal dwellers on whom data on respiratory symptoms and signs, and lung function had been obtained by prevalence surveys in 1970/71. Survival status was established in 99%, of whom 9.8% had died, the rate being higher i...

journal_title：International journal of epidemiology

authors： Anderson HR,Vallance P,Bland JM,Nohl F,Ebrahim S

更新日期：1988-03-01 00:00:00

abstract：:The 'Mendelian randomization' approach uses genotype as an instrumental variable to distinguish between causal and non-causal explanations of biomarker-disease associations. Classical methods for instrumental variable analysis are limited to linear or probit models without latent variables or missing data, rely on asy...

journal_title：International journal of epidemiology

authors： McKeigue PM,Campbell H,Wild S,Vitart V,Hayward C,Rudan I,Wright AF,Wilson JF

更新日期：2010-06-01 00:00:00

abstract：:A review of the international epidemiological literature is undertaken with the view of identifying the main demographic and sociocultural features of MS as they apply to ethnic groups. Ethnic groups are differentiated principally in terms of three variables: race, religion, and nationality. Although MS is present in ...

journal_title：International journal of epidemiology

authors： Lowis GW

更新日期：1988-03-01 00:00:00