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Biomedical subjects

E Rogot

Publications and source records attributed to E Rogot.

32 records · Page 2Linked to original sources
PubMed1975

The validity of data from next-of-kin in studies of mortality among migrants.

The design of the British-Norwegian Migrant Study afforded a unique opportunity for comparing in a large sample certain items of information on the same individual, as reported by himself some time before death, with the responses on the same points given after his death in a questionnaire addressed to his next-of-kin. This paper describes a comparison of the degree of agreement between these two methods of obtaining data and draws attention to possible sources and directions of bias involved in the use of information supplied after death by the next-of-kin. Validity, as measured by agreement with the subject's own replies, depends in part on the topic and nature of the information required and on the population included in the survey. A built-in check, such as that incorporated in the British-Norwegian Study, confers the advantage that such biases can be identified and the numerical effect of adjusting for them assessed with some confidence.

Age Factors↗
PubMed1975

Solar activity and mortality in the United States.

Mortality from all causes, from coronary heart disease, and from stroke in the US was studied in relation to solar activity as measured by the geomagnetic index, Ap, on a daily basis for the years 1964-66 and on a monthly basis for the years 1964-71. The data did not support previous assertions by Soviet researchers of an association between solar activity and cardiovascular mortality.

Astronomical Phenomena↗
PubMedDate not supplied

Life expectancy by employment status, income, and education in the National Longitudinal Mortality Study.

Based on data from the National Longitudinal Mortality Study for 1979-85, life expectancies are estimated for white men and white women by education, by family income, and by employment status. Life expectancy varies directly with amount of schooling and with family income. Differences in life expectancy at age 25 between the highest and the lowest levels of education completed were about 6 years for white men and about 5 years for white women. For family income, differences between the highest and the lowest income groups were about 10 years for white men and 4.3 years for white women. The largest differences in life expectancy were between employment categories. At age 25, white men in the labor force lived on average about 12 more years than those not in the labor force, and white women lived on average about 9 more years. For those who were unable to work compared with those in the labor force, the difference for white men was about 20 years; for white women, 29 years. Results in this study showed much the same differentials in life expectancy for education as the earlier Kitagawa-Hauser study.

Adult↗
PubMedDate not supplied

The British-Norwegian migrant study: 5-year mortality differentials due to cigarette smoking.

Cigarette smoking and 5-year survivorship of 20,017 British and 10,016 Norwegian migrants to the United States were compared with 17,696 British and 26,155 Norwegian nonmigrants. The highest mortality ratios for 5-year age-adjusted death rates observed were of cigarette smokers to nonsmokers, ranging from 1.40 to 1.60 for men and from 1.18 to 1.36 for women. Mortality ratios of nonmigrants to migrants ranged from 1.07 to 1.19 for men and from 1.22 to 1.36 for women. Mortality ratios for British to Norwegian groups ranged from 1.13 to 1.27. Some differences in mortality ratios for cardiovascular diseases contrasted with mortality ratios for noncardiovascular diseases were noted. The most important of these differences was the apparent lack of any consistent difference between nonmigrants and migrants in their 5-year cardiovascular mortality rates, although there were consistent differences for noncardiovascular diseases.

Adult↗
PubMedDate not supplied

Smoking and causes of death among U.S. veterans: 16 years of observation.

In a 16-year mortality followup of some 293,000 insured U.S. veterans, specific causes of death were studied in relation to smoking status. The main results confirmed earlier findings.Mortality ratios for cigarette smokers as compared with nonsmokers were 1.73 for all causes of death, 1.58 for all cardiovascular diseases, 2.12 for all cancers, and 4.31 for all respiratory diseases. The highest ratios (those greater than 5.0) were observed for cor pulmonale, aortic aneurysm, emphysema and bronchitis, cancer of the pharynx, cancer of the esophagus, cancer of the larynx, and cancer of the lung and bronchus. The greatest excess in deaths in terms of observed numbers minus expected was found for the cardiovascular diseases, in particular for coronary heart disease.Mortality ratios for ex-cigarette smokers who had stopped smoking for reasons other than physicians' orders were much lower compared with nonsmokers than the mortality ratios for current cigarette smokers: 1.21 for all causes, 1.15 for all cardiovascular diseases, 1.39 for all cancers, and 2.08 for all respiratory diseases. For most causes of death, the mortality ratios for ex-cigarette smokers who had stopped smoking for reasons other than physicians' orders varied inversely with the number of years of cessation. For some diseases, the mortality risk for the ex-cigarette smoker returned to normal almost immediately after the cessation of smoking, whereas for others, the return to normal was more gradual. The first group included stroke and the combined category of influenza and pneumonia; the second group included cardiovascular diseases as a whole and coronary heart disease. For still other diseases, although the mortality ratio declined with the length of time smoking was discontinued, substantial excess risks remained even after 20 years of cessation. In this third group were aortic aneurysm, bronchitis and emphysema, and lung cancer-diseases with very high mortality ratios for current cigarette smokers. Parkinson's disease remained the one disease that clearly exhibited a negative association with cigarette smoking.

Adult↗