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Biomedical subjects

G Black

Publications and source records attributed to G Black.

29 records · Page 2Linked to original sources
PubMed1991

Health care use among young children in day care. Results in a randomized trial of early intervention.

Exposure of young children to group day-care settings increases the risk of illness and may result in higher use of medical care. These observations raise concerns that the use of such settings for early intervention programs for low-birth-weight infants may increase the already high burden of medical care costs incurred by these children and their families. To address the question of medical care use associated with center-based care, we examined the hospital-based and ambulatory care reported for participants of the Infant Health and Development Program. This project is a multisite randomized trial of an early intervention program for preterm low-birth-weight infants with an intervention including 2 years of center-based care. The Intervention group did not differ in hospital-based care and averaged only two more physicians' visits over the 3-year observation period than the comparison group. We conclude that early intervention programs involving high-quality group care are not accompanied by substantial increases in health care use.

Ambulatory Care↗
PubMed1985

Lack of photoprotection against UVB-induced erythema by immediate pigmentation induced by 382 nm radiation.

Immediate pigment darkening (IPD) was induced on the backs of 11 human volunteers of skin types III and IV by exposing the skin to UVA radiation (382 nm). The minimum erythema dose (MED) of UVB radiation was also determined by exposing sites to graduated doses of 304 nm radiation. The order of exposure of distinct anatomic areas was as follow: UVB followed by IPD induction; IPD induction followed by UVB; IPD induction followed 3 h later by UVB; and UVB only. Erythema responses induced by UVB were graded by inspection 24 h later and the MEDs in the 4 areas were compared. The induction of IPD before UVB exposure caused no significant change in the MED compared to sites receiving UVB only, or receiving UVA radiation after UVB, confirming that the IPD reaction does not protect against UVB-induced erythema. There was also no evidence of photorecovery, i.e., an increase in the MED of UVB resulting from exposure to longer wavelength, UV or visible radiation following UVB exposure.

Adolescent↗
PubMedDate not supplied

Social dominance and 22-year all-cause mortality in men.

OBJECTIVE: Research findings suggest that, in addition to hostility, social dominance-related variables may be related to morbidity and mortality. The purposes of the present study were to evaluate a) whether pressured social dominance (defined as a pattern of structured-interview-defined characteristics of verbal competition, immediateness of response, and fast speaking rate) was related to long-term health outcomes, namely, all-cause mortality, and b) whether individuals characterized by other patterns of structured-interview-derived characteristics also varied in terms of mortality. METHOD: The present study represents an analysis of the data from the 22-year mortality follow-up of 750 men from the Western Collaborative Group Study. Cluster analytic techniques were used to classify individuals according to their speech and behavioral characteristics during a structured interview. Cox proportional hazards models were used to test the association between the behavioral characteristics and the risk of all-cause mortality. RESULTS: The pattern of characteristics reflecting pressured social dominance was found to be positively related to mortality (RR = 1.6, 95% CI = 1.1-2.4, p < .02); this relation held after controlling for diastolic blood pressure, total cholesterol, and smoking status at study entry, and also after controlling for hostility. In addition, the pattern of characteristics in which hostility was salient was found to be positively related to mortality (RR = 1.5, 95% CI = 1.1-2.2, p < .02). Finally, a pattern of characteristics that suggests placid individuals who are neither hostile nor socially dominant was found to be significantly negatively related to mortality (RR = .638, 95% CI = .419-.974, p < .04). CONCLUSIONS: These results suggest that, in future research concerning psychosocial factors and long-term survival, attention should be given to social dominance as well as to hostility.

Adult↗