Biomedical subjects
Publications and source records attributed to K R Hammond.
The findings of our study indicate that women pretreated with E/progestin demonstrate increased gonadotropin requirements when undergoing ovulation induction. Whether this treatment has a significant effect on the outcome of ovulation induction in patients receiving gonadotropins remains to be established.
The requirement to obtain a semen sample at a specific time for an infertility treatment procedure has potential to produce considerable performance anxiety. This study was designed to evaluate the semen quality of men participating in infertility treatments associated with heightened performance anxiety. The most recent pretreatment semen analysis and the infertility treatment semen analysis, as well as the first and last procedure semen analyses, were compared using paired t-tests for 77 patients undergoing assisted reproductive technology procedures and 121 patients undergoing intrauterine insemination. No significant differences were noted in either of these groups of patients. However, in men with total motile sperm counts of less than 40 million, semen parameters improved significantly in the procedure semen analyses. Thus, participation in infertility treatments associated with performance anxiety does not appear to be detrimental to semen quality, and in certain groups of patients semen quality may improve.
Estrogen (E)/progestin therapy for functional ovarian cysts is widely used in clinical practice, but the efficacy of this treatment has not been determined in controlled trials. In this study, we examined the effect of E/progestin administration in a group of infertility patients enrolled in a program of ovulation induction who had cysts identified by transvaginal sonography. Patients were randomized to receive either norethindrone 1 mg/mestranol 0.05 mg/d (group A, n = 24) or no treatment (group B, n = 24) for up to 6 weeks. Patients were re-evaluated by sonography at 3, 6, and 9 weeks after entry into the protocol. The ages, mean cyst diameters, and proportions of patients having received gonadotropins in the previous menstrual cycle were not significantly different among the two groups. All patients who had a sonographic abnormality persisting for 9 weeks were surgically explored and found to have pathological cysts. The rate of disappearance of functional ovarian cysts was not affected by E/progestin treatment.
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Before carrying out any action, whether it is concerned with professional life or with humdrum everyday routine, one has always to choose between at least two alternatives: to act or not to act. Decisions are always based upon information, and it is clear that this information should be of the best quality possible and that it should also be used in the most efficient way possible. Judgement analysis helps to improve the reliability of clinical decisions, in practice as well as in the management of clinical trials.
This study extends earlier work on the evaluation of depression by general physicians, and compares the results obtained with that group with those from a group of experienced psychiatrists. Differences within each group were larger than those between them. In neither group were individuals able to describe their own diagnostic processes with great accuracy, but psychiatrists were, as expected, somewhat more consistent than general physicians. They became even more so when allowed to select their own cues; of which, however, they made use of a smaller number. These tended to be of a specific rather than (as with the physicians) of a general nature.
Departing from the traditional model for teaching and learning, this article deals with the problem of teaching and learning the effective application of knowledge already acquired. To this end, a model for the process of exercising judgment was outlined, and the results of an empirical study of judgmental learning were employed to show the inadequacy of the traditional outcome feedback procedures. Computer graphics techniques were used to provide new forms of information to the learner; the results are promising for the rapid learning of a task that would otherwise be difficult to learn.
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Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.
Explore the source record for details and available documents.