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Biomedical subjects

C Patrick

Publications and source records attributed to C Patrick.

18 recordsLinked to original sources
PubMed1999

Postoperative irradiation: are there long-term effects on nerve regeneration?

This study investigates the histomorphologic and functional effects of external-beam irradiation on peripheral nerve regeneration in the rat model. All animals received a 1.5-cm interposition isogeneic nerve graft to the right posterior tibial nerve. Group 1 animals served as controls and Groups 2 and 3 received fractionated postoperative irradiation doses of 66 and 106 Gy, respectively. All animals were evaluated for functional recovery with monthly walking-track analysis. At the end of 8 months, the animals were sacrificed and segments of the grafted and distal nerve were harvested for histomorphologic analysis. A statistically significantly fewer number of axons were found in the distal segment of the irradiated specimens, compared to controls. There was no significant difference in the nerve-fiber density of the grafted or distal segments, compared to controls. Functional evaluation by walking-track analysis showed no difference between the irradiated groups and controls over the length of the study. These results suggest that acute nerve grafting of nerve defects in the face of planned postoperative irradiation is safe.

Animals↗
PubMed1997

Folie à deux in forensic setting.

OBJECTIVE: This paper is written with the aim of presenting a series of cases of folie à deux, an unusual disorder, occurring in a forensic setting where all the victims suffered a fatal or near-fatal outcome. Similarities in the psychopathology in these cases are drawn and comments are made about their outcome in court. The paper is also written to draw attention to the potential risks involved in this type of case and to accent patterns in psychopathology and in legal outcomes. CLINICAL PICTURE: Five folie à deux cases are described. All are well known to one of the authors (NK), who has treated them at some stage of their illness, provided medicolegal reports for the trial of cases 3, 4 and 5, and provided expert witness testimony in the trial of case 3. All case notes and other relevant documents were studied in detail and a brief summary is provided for each case. OUTCOME: The cases appear to conform with the description of folie à deux given in the literature and consist of husband and wife (three cases), mother and daughter (one case) and twin brothers (one case). None of these cases had had any past psychiatric or criminal history, yet all the victims suffered a fatal or near fatal outcome. Additionally, all had shared religious delusions in one form or another. CONCLUSIONS: Folie à deux cases with shared religious delusions can be a very high risk and could be potentially fatal in a family setting. The authors also highlight the difficulties inherent in a forensic system restricted to McNaughton rules, particularly when a person is on trial having committed, or being alleged to have committed, a serious offence, and who is found to be suffering from a psychotic illness.

Adolescent↗
PubMed1994

Women and outpatient mental health services: use by black, Hispanic, and white women in a national insured population.

Factors affecting ethnic differences in women's use of outpatient mental health services were analyzed to determine whether lower use by black and Hispanic women occurred when socioeconomic and other factors are controlled. Employing the Andersen and Newman model of health use, insurance claims of 1.2 million federal employees insured by Blue Cross/Blue Shield in 1983 were analyzed to identify significant predictors of use. Results revealed that black and Hispanic women had lower probabilities and amounts of use when compared to white women even after controlling for a number of variables. Further research is needed to examine cultural and gender-related factors that may underlie ethnic differences; attitudinal factors and service system barriers are also implicated. Such findings have policy implications in the current climate of health care reform for which efforts are needed to increase access to care for ethnic minority women and other underserved populations.

Adult↗
PubMed1994

Ethnicity and the use of outpatient mental health services in a national insured population.

OBJECTIVES: Factors affecting ethnic differences in the use of outpatient mental health services are analyzed in an insured, nonpoor population to determine if lower use by Blacks and Hispanics persists when socioeconomic and other factors are controlled. METHODS: To identify significant predictors of the probability and amount of use, insurance claims data for a population of 1.2 million federal employees insured by Blue Cross/Blue Shield in 1983 were analyzed with the Andersen and Newman model of health service utilization. Logistic and ordinary least squares regression models were estimated for each ethnic group. RESULTS: Blacks and Hispanics had lower probabilities and amounts of use when compared with Whites after controlling for a number of variables. CONCLUSIONS: Since ethnic differences in the use of outpatient mental health services exist even in an insured, nonpoor population, factors other than lower socioeconomic status or insurance coverage--for example, cultural or attitudinal factors and service system barriers--are likely responsible. Such findings have policy implications in the current climate of health care reform to increase access to care for the underserved.

Adolescent↗
PubMed1994

Ethnic differences in use of inpatient mental health services by blacks, whites, and Hispanics in a national insured population.

OBJECTIVE: We examine whether ethnic differences in use of inpatient mental health services exist when the usually confounding effects of minority status and culture are minimized or controlled. DATA SOURCES AND STUDY SETTING: Secondary analyses were conducted using a national insurance claims database for 1.2 million federal employees and their dependents insured by the Blue Cross/Blue Shield (BC/BS) Federal Employees Plan (FEP). STUDY DESIGN: The Andersen-Newman model of health utilization was used to analyze predisposing, enabling, and need variables as predictors of inpatient mental health utilization during 1983. The study design was cross-sectional. DATA COLLECTION: The study database was made up of BC/BS insurance claims, Office of Personnel Management employee data, and Area Resource File data. PRINCIPAL FINDINGS: No significant differences were found among blacks, whites, and Hispanics in the probability of a psychiatric hospitalization or in the number of inpatient psychiatric days. Regression analyses revealed younger age and psychiatric treatment of other family members as significant predictors of a hospitalization; region of residence, younger age, hospital bed availability, and high option plan enrollment were significant predictors of the number of treatment days. CONCLUSIONS: Ethnic differences in use of inpatient mental health services were not significant in this generously insured population. Further research involving primary data collection among large and diverse samples of ethnic individuals is needed to fully examine the effects of cultural and socioeconomic differences on use of mental health services.

Adolescent↗
PubMed1993

Use of inpatient services by a national population: do benefits make a difference?

This study describes changes in the use of inpatient mental health services by children and adolescents under age 18. The data were insurance claims from the Blue Cross and Blue Shield Federal Employees Program. The study focused on a cut in inpatient benefits that occurred between 1978 and 1983. The rate of inpatient hospitalization dropped significantly, and the average number of days also decreased significantly from 45.8 to 27.0 days. This study is among the first to demonstrate that the rate and amount of inpatient care provided for children and adolescents is responsive to variations in benefit coverage.

Adolescent Psychiatry↗
PubMed1993

The effect of insurance benefit changes on use of child and adolescent outpatient mental health services.

Use of outpatient mental health services by dependent children younger than 18 years of age enrolled in the Blue Cross and Blue Shield Federal Employees Plan (FEP) is examined in 1978 and 1983 focusing on a cut in benefits and a shift from high- to low-option plan enrollment between those years. While use rates increased from 2.13% to 2.76% by 1983, the average number of visits decreased from 18.9 to 12.8. High-option plan use exceeded low-option plan use in both years--2.26% versus 0.81% in 1978 and 3.58% versus 1.93% in 1983. In addition to benefit plan, ethnicity, parent's education, type of provider, and type of treatment setting also significantly predicted amount of use. Despite the strong evidence of the effects of benefit coverage, it is likely that need exceeded use even in this insured population of children and adolescents. Implications of the findings are discussed in the context of recent dramatic changes in mental service delivery including privatization, managed care initiatives to cut costs, and growing pressures for national health insurance.

Adolescent↗
PubMed1992

Serious physical illness as a stressor: effects on family use of medical services.

The purpose of this study was to investigate the effect of stress on the family due to the hospitalization of a family member for a serious chronic illness. The data were the health insurance claims of 3,591 families obtained from the largest U.S.A. insurer of federal employees. It was hypothesized that the nonhospitalized family members would have a stress-related increase in medical expenses for some period of time after the chronically ill person was hospitalized. Multiple regression analysis with adjustments for a number of covariates found increases in mean medical charges of $326 per person (p less than 0.01) (excluding the hospitalized person) in the 3 years following the hospitalization. This finding lends support to the theory that stress--in this case, hospitalization of one family member--affects the entire family system. No significant differences were found in medical charges between families who did and did not receive mental health treatment following the hospitalization.

Adaptation, Psychological↗
PubMed1984

A new look at evidence about reduced cost of medical utilization following mental health treatment.

Meta-analysis of 58 controlled studies and analysis of the claims files for the Blue Cross and Blue Shield Federal Employees Plan for 1974-1978 provide mutually supporting evidence of the cost-offset effects of outpatient mental health treatment. These two complementary resources provide a powerful tool for investigating the nature of associations between mental health services and subsequent reductions in the use of other medical services. The authors found that the reductions in use of medical services are associated with inpatient rather than with outpatient utilization and tend to be larger for persons over 55 years of age.

Adolescent↗
PubMed1983

Mental health treatment and medical care utilization in a fee-for-service system: outpatient mental health treatment following the onset of a chronic disease.

Charges for medical services of persons covered by the Blue Cross/Blue Shield Federal Employees Program from 1974 through 1978 who were first diagnosed as having one of four chronic diseases in 1975 and within one year began mental health treatment (MHT) were compared with persons who also were first diagnosed as having one of these diseases in 1975 but had no subsequent MHT. In the third year following the diagnosis, those having seven to 20 MHT visits had medical charges $309 lower and those having over 21 MHT visits had medical charges $284 lower than the comparison group. The savings in medical charges over three years of the group having seven to 20 MHT visits were a function of lower use of inpatient services and roughly equaled the cost of 20 MHT visits. Outpatient mental health treatment can be included in a fee-for-service medical care system to improve the quality and appropriateness of care and, if not extensive, may also serve to lower medical care costs.

Adolescent↗