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Biomedical subjects

W G Dahlstrom

Publications and source records attributed to W G Dahlstrom.

13 recordsLinked to original sources

Using college alumni populations in epidemiologic research: the UNC Alumni Heart Study.

The UNC Alumni Heart Study (UNCAHS) is a prospective study of the role of psychosocial factors, in particular hostility, in the development of coronary heart disease. The target population is composed of persons who completed the Minnesota Multiphasic Personality Inventory while attending the University of North Carolina in the mid-1960s. Logistic regression analyses were used to determine whether hostility, demographic and other variables were significant determinants of the subjects' locatability and participation. It was found that MMPI hostility scores at initial testing were unrelated to either potential or actual locatability or participation. Thus there is no evidence that hostility is the source of selection bias in the UNCAHS. Selection into the study was predicted by age, sex, degree status and variables concerned with the conditions under which the MMPI was administered. It is concluded that follow-up studies of college cohorts may have study-specific sources of selection bias.

Adolescent

The derivation of gender-role scales GM and GF for MMPI-2 and their relationship to Scale 5 (Mf).

Separate scales for masculine and feminine gender roles (GM and GF, respectively) were developed for the Minnesota Multiphasic Personality Inventory-2 (MMPI-2) based on the item endorsements of men and women in the restandardization sample. Each scale reflects the pattern of answers of a majority of the members of the respective sexes. There are no items in common between the two scales, and they correlate -.10 with each other for both men and women. Distributional, temporal stability, and internal consistency characteristics were analyzed, as well as their item overlap and correlations with the basic profile scales. These separate unipolar scales were contrasted with Scale 5 (the Masculinity-Femininity scale, Mf), the traditional measure of these constructs in the Minnesota Multiphasic Personality Inventory (MMPI). The conjoint use of GM and GF to form gender-role groups is recommended to supplement and clarify the ambiguity of midlevel scores on Scale 5.

Adult

Hostility patterns and health implications: correlates of Cook-Medley Hostility Scale scores in a national survey.

Correlated Cook-Medley Hostility Scale (Ho) scores with sociodemographic variables in a national survey of 2,536 adults. Multiple regression models revealed that Ho scores were associated with race (p less than .0001), years of education (p less than .001), sex (p less than .001), occupation (p = .0002), and income (p = .0025). Higher scores were found in non-Whites, men, and those of lower socioeconomic status. There was a Race x Income interaction (p less than .005), such that the greatest Ho score differences between the races occurred among those with the lowest incomes. Age was related to Ho scores in a curvilinear fashion: higher scores in the youngest and oldest age groups than in the middle-aged groups (p = .025). Marital status was unrelated to Ho scores. These patterns of hostility are similar to the patterns of health indicators in the population. Because hostility has been found to be associated with adverse health outcomes, hostility may account for some of the demographic variations in health status. However, it is argued that research must first establish the generality of the hostility-health relationship across subgroups of the population.

Adolescent

The Beck Depression Inventory: item order and the impact of response sets.

The lack of subtle content in the item groups of the Beck Depression Inventory (BDI) and the consistency in the ordering of the items from least to most pathological make this instrument unduly susceptible to either defensive or malingering response sets. Two experimental forms were developed for the BDI: a backwards version (a simple reversal of the order of items within each group) and a random-order version. These forms, together with the original item order, were given to college undergraduate women along with the Depression scale from the MMPI and the Burks-Martin Questionnaire covering recent life changes and current stressful situations. The random order BDI results in a significantly higher depression score than did either the original or backwards version. Correlations with the other instruments were comparable for all three forms. The random order of items within each set appears to break up a response set to endorse either the first or last item and is, therefore, recommended.

Adjustment Disorders

Hostility, CHD incidence, and total mortality: a 25-year follow-up study of 255 physicians.

High levels of hostility as assessed by a MMPI scale (Ho) have been found associated with increased levels of arteriographically documented coronary atherosclerosis. In this study we examined the relationship between hostility and subsequent health status in a 25-year follow-up of 255 medical students who completed the MMPI while in medical school. High Ho scores were found to be predictive of both clinical coronary disease incidence and total mortality.

Adult

A survey of MMPI teaching in APA-approved clinical training programs.

A questionnaire on teaching of the MMPI was sent to all APA-approved clinical training programs. The questionnaire asked the faculty member primarily responsible for teaching the MMPI to indicate how much emphasis was placed on it, how they made use of it, and how valuable it was felt to be. A return rate of 83% was achieved. It was found that: a) 92% of the responding programs offer courses dealing with the MMPI; b) 74% of the programs that teach the MMPI put major emphasis on it; c) emphasis placed on the instrument is holding steady; d) instructors with 10 years or less teaching experience rate the test as highly and are as likely to use it outside the classroom as their more experienced colleagues.

Curriculum

Follow-up study of patients treated by X-ray epilation for tinea capitis: psychiatric and psychometric evaluation.

To investigate the late effects of radiation to the head upon subclinical mental disorders, a psychiatric and psychometric evaluation was performed on 177 cases treated 10-29 years earlier for ringworm of the scalp by X-ray therapy (N :109) or, by chemotherapy (N :68). Analyses which controlled for educational level and family psychiatric disorders showed that, among whites, the irradiated group manifested more psychiatric symptoms and more deviant MMPI (Minnesota Multiphasic Personality Inventory) scores. They were also judged more maladjusted from their MMPI profiles, and more frequently had a history of treated psychiatric disorders; however, the psychiatrist's overall rating of current psychiatric status showed only a borderline differnece between the two groups. There were no significant differences between irradiated and chemotherapy treated blacks.

Adult

Personality.

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Achievement

The Cook-Medley hostility scale: item content and ability to predict survival.

Previous studies have identified the MMPI-based Cook and Medley hostility scale (Ho) as a predictor of health outcomes. To achieve a better understanding of the construct measured by this scale, Ho items were classified on an a priori basis. Six subsets were identified: Cynicism, Hostile Attributions, Hostile Affect, Aggressive Responding, Social Avoidance, and Other. Study 1 examined the correlations of these subsets with scales of the NEO Personality Inventory in two samples of undergraduates. Good convergent and discriminant validity were demonstrated, but there was some evidence that items in the Social Avoidance and Other categories reflect constructs other than hostility. Study 2 examined the ability of the Ho scale and the item subsets to predict the 1985 survival of 118 lawyers who had completed the MMPI in 1956 and 1957. As in previous studies, those with high scores had poorer survival (chi 2 = 6.37, p = 0.012). Unlike previous studies, the relation between Ho scores and survival was linear. Cynicism, Hostile Affect, and Aggressive Responding subsets were related to survival, whereas the other subsets were not. The sum of the three predictive subsets, with a chi 2 of 9.45 (p = 0.002), was a better predictor than the full Ho scale, suggesting that it may be possible to refine the scale and achieve an even more effective measure of those aspects of hostility that are deleterious to health.

Adaptation, Psychological

A caution on the use of the MMPI K-correction in research on psychosomatic medicine.

The MMPI K scale is widely used to screen for invalid responses and to adjust substantive scale scores for defensiveness. In a normal volunteer sample, correlations of MMPI clinical scales and the Cook-Medley Hostility (HO) scale with self-reports and peer ratings on the NEO Personality Inventory (NEO-PI) were decreased rather than increased by K-correction. Similarly, in a medical sample, structured interview-based ratings of Potential for Hostility were better predicted by uncorrected HO scores than by K-corrected HO scores. Finally, in a prospective study of mortality among lawyers, uncorrected HO scores were a significant predictor of all-cause mortality; K-corrected scores were not. The data suggest that, under some circumstances, the K scale may measure substantive traits rather than defensiveness, and should be used and interpreted with caution. Its use is probably contraindicated for most research on psychiatrically normal subjects.

Adult