Search PubMed⌕ Search

Biomedical subjects

W F Page

Publications and source records attributed to W F Page.

51 records · Page 3Linked to original sources
PubMed1991

Using longitudinal data to estimate nonresponse bias.

In a recent survey of depressive symptoms among former prisoners of war, longitudinal data were used to estimate nonresponse bias. A predictive model was fitted to the data of current respondents and then was used to predict the scores of nonrespondents who had earlier provided similar convariate data. This analysis showed that, despite differences between respondents and nonrespondents in age, education, and severity of treatment during captivity, differences between the observed scores of respondents and the predicted scores of nonrespondents were small. For an estimation of the overall impact of nonresponse bias, revised estimates for the entire sample were calculated by combining observed data from respondents and predicted data for nonrespondents; the revised estimates differed little from those for respondents alone.

Adult↗
PubMed1991

Age, education, maltreatment, and social support as predictors of chronic depression in former prisoners of war.

This study examined the relationships of prisoner of war captivity trauma variables and individual protective variables to current depressive symptoms as indexed by the CES-D and its components. The sample consisted of 989 U.S. former POWs of World War II and the Korean War, who have been followed since the mid 1950s. Depressive symptoms persisted over 40 years later. Age, education, medical symptoms during captivity, and level of social support were related to later levels of adjustment. Theoretical and methodological implications of the findings were discussed.

Chronic Disease↗
PubMed1991

Prevalence and correlates of depressive symptoms among former prisoners of war.

Studies of former prisoners of war (POWs) provide valuable insights into posttraumatic adaptation because they gather information from a large population who survived the traumatic experiences of military captivity. Previous studies of POWs have shown elevated rates of psychiatric symptoms and disorders. This report presents evidence from a longitudinal study of three large, representative, national samples of former POWs. The study finds that depressive symptomatology, as measured by the Center for Epidemiologic Studies Depression Scale, is elevated in World War II POWs from the Pacific and European theaters and in Korean conflict POWs. Decades later, depressive symptomatology is found to be strongly associated with prior treatment in captivity. Differences in depressive symptomatology among the three POW groups can be attributed to captivity-related factors and to buffering factors, such as age at capture and education.

Age Factors↗
PubMed1987

Migration biases in address tracing by commercial firms.

The results of a small experiment in address tracing have shown that subjects who were found by commercial tracing were less apt to have moved and were especially apt to have remained in the same state. The documented relation of migration and health status means that differential success in subject tracing can lead to subsequent study bias. Therefore, those who use commercial tracing of epidemiologic study subjects must carefully consider the possibility of a "missing migrant" effect, and that it may, in turn, produce a subsequent survey bias.

Epidemiologic Methods↗
PubMed1987

Mortality and morbidity selection effects among US veterans.

Previous studies have documented a substantially lower mortality rate among US male veterans, a form of the "healthy worker" effect, but there have been no studies of morbidity selection effects among veterans. In this paper the evidence for mortality selection effects among US male veterans is reviewed, and data from two general health surveys are examined for evidence of a morbidity selection effect. Overall, there are no substantial differences in health characteristics between veterans and nonveterans, thus providing no evidence for a morbidity selection effect; the inclusion of military service-connected disabled veterans in this comparison, however, makes it somewhat problematic. Reconciliation of a clear mortality selection effect for veterans with the lack of evidence for a corresponding morbidity selection effect is attempted.

Adult↗
PubMed1986

Prostate cancer.

Explore the source record for details and available documents.

Black People↗
PubMed1985

The use of comparability ratios to adjust hospital trend data.

Hospital trend data may be affected by changes in diagnostic coding schemes. We studied the change from ICDA-8 (I-8) to ICD-9-CM (I-9) in a sample of roughly 13,600 double-coded Veterans Administration hospital diagnoses. Comparability ratios were computed and used to adjust trend data which overlap the time period when the shift from I-8 to I-9 occurred. With this adjustment for change in diagnostic coding scheme, apparent diagnostic trends are substantially altered.

Diagnosis↗
PubMed1985

Mortality patterns of New York State Vietnam Veterans.

Mortality odds ratios (MORs) comparing veterans with Vietnam service who died in New York State to veterans of the Vietnam era with no Vietnam service were estimated (N = 1,496). The most elevated MORs and their confidence intervals were non-motor vehicular injuries of transport (MOR = 2.18, (1.19, 3.96)), other accidents and burns (MOR = 1.37, (0.95, 1.98)), and homicide (MOR = 1.59, (0.86, 2.94).

Accidents↗
PubMed1982

Why veterans choose Veterans Administration hospitalization: A multivariate model.

Data from a national survey of veterans are analyzed to determine how age, income, health insurance and service-connected disability influence the veteran's choice of Veterans Administration (VA) hospitalization. Log-linear analysis is used to provide a model that expresses in numerically quantifiable terms (odds and odds ratios) the effects of these factors on the choice of VA hospitalization. Moreover, the multivariate nature of the analysis provides the opportunity for assessing the magnitude of these effect simultaneously in the presence of all other effects. The final model shows that age and health insurance act independently of each other and of all other factors. The effect of income is modified by service-connected disability status and vice versa; this interaction of two factors is probably due to VA hospital care eligibility criteria. Overall, the single most important factor affecting a veteran's choice of hospitalization is health insurance; veterans without health insurance have nearly five times greater odds of going to VA hospitals than do those with health insurance-regardless of age, income or service-connected disability status.

Age Factors↗
PubMed1980

Racial and socioeconomic factors in cancer survival. A comparison of Veterans Administration results with selected studies.

The survival experience of 46,000 Veterans Administration (VA) male cancer patients was analyzed and compared with the results of three other studies. In the VA data, no significant differences were found between white and black patient cancer survival rates except for bladder cancer; this observation differs from those in other studies. In the VA, all patients receive the same treatment with no distinctions whereas most U. S. hospitals place their patients into categories based on ability to pay. This factor probably accounts for the lack of racial differences in survival rates in the VA and the existence of racial or socioeconomic differences in survival rates in the other studies.

Adult↗
PubMed1975

Self-esteem and internal versus external control among black youth in a summer aviation program.

Changes in self-esteem and belief in internal versus external control of reinforcement (skill versus chance) were investigated among 24 black male and female youngsters, aged 12 through 19, and from diverse backgrounds and geographical locations. Age, socioeconomic status, geographical location, and achievement in flight training were varied. Results showed significant gains in self-esteem by Ss under 16 years of age (p smaller than .05) and Ss from middle income families (p smaller than .005). There was no significant change in belief in internal versus external control among any of the subgroups.

Adolescent↗
PubMedDate not supplied

Antecedent tonsillectomy and appendectomy in rheumatoid arthritis.

The prevalence of tonsillectomy and appendectomy was higher in 196 patients with rheumatoid arthritis (RA), prior to the onset of articular disease, than in their spouses and siblings. The estimated increased risk of developing RA with tonsillectomy was 1.5 and 3.5 times, with appendectomy 1.7 and 6.6 times, and with both surgical procedures 2.3 and 6.7 times, using patient-spouse and patient-sibling matched-pair data, respectively. However, only with patient-sibling data did the lower limits of the 95% confidence interval for the risk ratio exceed 1.0. Several hypotheses are offered to explain the possible association between these surgical procedures and RA.

Adult↗
PubMedDate not supplied

A cohort study of twins and cancer.

Given the current explosion of knowledge of the genetics and molecular biology of cancer, the possibility of widespread testing for inherited predisposition to cancer has been raised. The main objective of this study was to assess the effect of inherited predisposition on cancer mortality among the National Academy of Sciences-National Research Council Twin Registry. The twins were white male United States veterans of World War II, who were born during the period 1917-1927. The follow-up period was from 1946 to 1990, and some cause of death was determined with the use of death certificates. We compared concordance for death from cancer among 5690 monozygotic twin pairs to that among 7248 dizygotic pairs. A possible effect of inherited predisposition to death from cancer was considered present if concordance for cancer mortality among monozygotic twin pairs was greater than it was among dizygotic twin pairs. Among monozygotic and dizygotic twins, a total of 1918 cancer deaths was observed. Concordance for death from cancer at all sites among monozygotic twins was higher than it was among dizygotic twins (overall rate ratio, 1.4; 95% confidence interval, 1.0-2.0). For each zygosity group, two or fewer pairs were observed to be concordant for death from cancer of a specific site, with the exception of lung cancer.(ABSTRACT TRUNCATED AT 250 WORDS)

Cohort Studies↗