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Biomedical subjects

A Wilson

Publications and source records attributed to A Wilson.

At least 505 records · Page 28Linked to original sources
PubMed1976

Multivariate analysis: data reduction and treatment evaluation.

In a recent article, Everitt (1975) discussed several problems with multivariate techniques. However, two useful applications of multivariate techniques were not covered. The present paper describes the use of factor analysis to reduce a large array of outcome variables to a statistically manageable number, and multivariate analysis of variance to determine the relative effectiveness of several treatment regimes where a single outcome variable cannot be specified. It is concluded that the advantages of a multivariate approach out-weigh the disadvantages, provided the researcher is careful in interpreting and reporting his results.

Alcoholism↗
PubMed1976

Disulfiram implantation: placebo, psychological deterrent, and pharmacological deterrent effects.

In an effort to examine the placebo, psychological deterrent, and pharmacological deterrent effects associated with implanted disulfiram, subjects were given either disulfiram implants or sham operations. Ethanol challenges elicited no disulfiram-ethanol reactions (DERs), indicating that at the time of the challenge neither a pharmacological deterrent nor a placebo effect was operating. Of the patients who resumed drinking, only those with disulfiram implants experienced DERs. Sham operation subjects continued to drink after their first post-challenge drink; four of five disulfiram implant recidivists remained abstinent following their experience of a DER. It is concluded that the pharmacological deterrent effect of the disulfiram implant may have been underestimated in previous reports.

Alcohol Drinking↗
PubMed1976

Studies of the renin-angiotension-aldosterone system, cortisol, DOC, and ADH in normal and hypertensive pregnancy.

Compared with a group of normal pregnant women, matched for age, parity, posture, and length of gestation, women with hypertension and proteinuria in the last trimester had significantly lower plasma concentrations of renin, renin substrate and angiotensin II. Plasma aldosterone and DOC concentrations were also lower in the hypertensive group. The plasma levels of cortisol, corticosterone, and ADH showed no significant difference. Plasma renin concentration was raised throughout normal pregnancy, and part of this increase appeared to be due to the presence of an inactive form of renin. Plasma concentrations of renin substrate, angiotensin II, and aldosterone were also raised in normal pregnant women, but concurrent measurement of these substances showed no significant relationship between them, renin, and plasma electrolytes in mid- or late gestation. A study of five women in the weeks immediately after conception showed increases in plasma angiotensin II and aldosterone concentrations, which were significantly related at this very early stage of pregnancy. Total 24-hour urinary sodium increased gradually from about two weeks after gestation to the end of the study five weeks later. This increase was due mainly to a rise in overnight sodium excretion, with a fall in the day/night ratio. No relationship was found between plasma angiotension II or aldosterone concentrations and day, night, or total 24 hour sodium excretion.

Adrenal Cortex Hormones↗
PubMed1975

Sensorimotor and physiological effects of various alcoholic beverages.

Effects of a standard dose of alcohol (1.3 g/kg) in the form of Canadian rye whisky, Canadian beer and a sparkling table wine were compared with those of a nonalcoholic carbonated control beverage. Sixteen young male and eight female subjects, all moderate drinkers, were tested in a Latin square design. Measurements were made on the pursuit rotor and quantitative Romberg tests, and of skin temperature, heart rate, malar flush and blood alcohol concentration during the prealcohol baseline period and at regular intervals over the 4-hour drinking period. The three alcoholic beverages produced blood alcohol curves that did not differ significantly. All three alcoholic beverages produced increasing sensorimotor impairment over time, which corresponded in degree to the increasing blood alcohol concentration. There were no significant differences between the three beverages on either the sensorimotor or physiological measures at any blood alcohol value. The results of this study indicate that the degree of impairment after alcohol ingestion in a socially relevant manner is not dependent on the type of beverage consumed, but only on the resulting blood alcohol concentration.

Adult↗