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A reanalysis of some data from "a study of motivational, attitudinal and environmental deterrents to the taking of physical examinations that include cancer tests".
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[Reanalysis of lung cancer occurrence in Fredericia].
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A reanalysis of acid-base equilibria of 1,4-benzodiazepines in nonaqueous media.
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A logistic reanalysis of Ashford and Sowden's data on respiratory symptoms in British coal miners.
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The conditions underlying race riots as portrayed by multidimensional scalogram analysis: a reanalysis of Leiberson and Silverman's data.
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Symposium: Medical problem solving: a reanalysis and alternative perspectives.
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Suicide and pseudocide: a reanalysis of Maris's data.
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The inbreeding load in Brazilian whites and negroes: further data and a reanalysis.
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Item selection for profiles: a reanalysis of an international profile of schizophrenia.
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Reanalysis of genetic effects of atomic bombs: comment and further analysis.
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Factors related to the intention to have additional children in the United States: a reanalysis of data from the 1965 and 1970 national fertility studies.
Reproductive intentions of white mothers with no more than three children in 1965 and in 1970 were analyzed for their stability and change with respect to such factors as parity, age of the youngest child, wife's employment, and husband's education. Parity and age of the youngest child were found to have a much more important effect on the intent to have additional children than were such socioeconomic variables as wife's employment and husband's education. Parity and the interval since the latest birth (or the age of the youngest child) were found to have a nonlinear effect and to interact in affecting the reproductive intention. This suggests a convergence to a two-child family as the threshold size and that the lenght of childspacing is contingent on the parity. Change during 1965--1970 in this direction was found to be greater among mothers with husbands having college or higher educations.
Regional obstetric anesthesia and newborn behavior: a reanalysis toward synergistic effects.
The Brazelton Neonatal Behavioral Assessment Scale was administered to 54 term, healthy infants on days 1, 2, 3, 4, 5, 7, and 10. Infants were divided into 8 groups of maternal obstetrical medication. A separate drug factor score was computed from 4 variables: time from (1) first and (2) last drug administration to delivery, (3) number of different drugs, and (4) drug administrations. In order to determine the additive effects of drug and other obstetric factors on neonatal behavior, the drug group and drug factor score plus length of labor, parity, and the ponderal index were used in a series of multiple regression analyses to predict Brazelton scale cluster scores on each day. In a second set of multiple regressions, these variables were used to predict the infant's rate of behavioral change as estimated by the slopes of the Brazelton scale cluster scores across the 7 days. The results indicated that the combined effect of the predictor variables significantly explained 10%-28% of the variance in neonatal behavior. It was hypothesized that the effects of low levels of medication are subtle but may be unmasked when medication effects are studied in combination with other factors that may potentiate drug effects.
Prolonged end-stage fetal heart rate deceleration: a reanalysis.
In an earlier publication we reported on 18 patients who had what was described as prolonged fetal heart rate (FHR) deceleration in the second stage of labor and who had uniformly good outcome. It was believed that the reason for the good outcome was early diagnosis and rapid delivery when the FHR deceleration did not improve by the time the patient entered the delivery room. We have continued to handle this type of deceleration pattern in a similar fashion with good results, but 18 additional cases of prolonged end-stage FHR deceleration associated with a poor outcome are reported along with 1 case of intrauterine demise. Physicians who use the fetal monitor need to be aware of this potentially ominous FHR pattern.
Catecholamine alterations attending spinal cord injury: a reanalysis.
The catecholamine response of injured tissue after severe spinal cord injury (SPI) remains a puzzling controversy. This study was undertaken in an attempt to resolve that controversy. The influence of the biochemical assay method, the magnitude of injury, and the spinal cord region injured on catecholamine levels was determined in the cat spinal cord. It was found that the concentration of norepinephrine (NE) in the traumatized spinal cord is dependent on both the magnitude and the region of injury. The relatively large tissue samples necessitated by the older, less sensitive assay methodology show little or no change in NE levels after a 500-g/cm injury in the cat. When regional samples are analyzed with more sensitive methods, a net depression in the NE level of local tissue is observed. The results of earlier studies from this laboratory indicating an increase in tissue NE after trauma were apparently artifactual, presumably due to the nonselective nature of the biochemical assay used at that time. Dopamine levels were not elevated after SCI, and previous reports from other laboratories indicating an increase in dopamine levels were probably also errant due to methodology-related problems.
Medical problem-solving: a reanalysis.
Data derived from high-fidelity simulation studies of medical diagnostic reasoning are reanalyzed and critiqued. Results from the reanalyses do not support the earlier findings. The reanalyses also raise questions about the validity of a psychological model of diagnostic inquiry that formed the foundation of the high-fidelity simulation research. Suggestions regarding alternate methods for conducting research on diagnostic problem-solving are offered.
Breast cancer. Reanalysis confirms results of 'tainted' study.
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'J-shaped' relationship between drinking during pregnancy and birth weight: reanalysis of prospective epidemiological data.
Worldwide epidemiological studies on the effects of drinking during pregnancy on birth weight and prematurity were surveyed. Far more studies have reported no significant effects on birth weight than have reported significant decreases. Statistical analyses of the means from the prospective studies in this area indicated that both maternal smoking and alcohol consumption during gestation are associated with a significant decrease in birth weight. The effect of smoking is three times greater than the effect of alcohol. When the data were stratified by smoking status, maternal alcohol consumption did not have a significant effect on birth weight for non-smokers, but among smokers there was a significant linear trend with a threshold for decreased birth weight at about an average of two drinks per day. There was also a significant pattern of increased birth weight associated with low levels of alcohol consumption, suggesting an inverted 'J-shaped' function between drinking during pregnancy and birth weight.