Cost-effectiveness of growth factors during hepatitis C anti-viral therapy.

BACKGROUND: Although the current standard of care for controlling anaemia and neutropenia during anti-viral therapy for hepatitis C is to use dose reduction of ribavirin and pegylated interferon, respectively, erythropoietin and granulocyte colony-stimulating factor are now being advocated as alternatives to dose reduction. AIM: To determine the cost-effectiveness of erythropoietin and granulocyte colony-stimulating factor as an alternative to anti-viral dose reduction during antihepatitis C therapy. METHODS: Decision analysis was used to assess cost-effectiveness by estimating the cost of using a growth factor per quality-adjusted life-year gained. RESULTS: Under baseline assumptions, the cost per quality-adjusted life-year of using growth factors ranged from 16,247 US dollars for genotype 1 with neutropenia to 145,468 US dollars for genotype 2/3 patients with anaemia. These findings are sensitive to the relationship between dose reduction and sustained virological response. CONCLUSIONS: Based upon our findings and the varying strength of the evidence for a relationship between dose reduction and sustained virological response: granulocyte colony-stimulating factor may be cost-effective for genotype 1 patients; erythropoietin is probably not cost-effective for genotype 2/3 patients; no conclusion can be reached regarding the cost-effectiveness of erythropoietin for genotype 1 patients or granulocyte colony-stimulating factor for genotype 2/3 patients. Randomized trials are needed to firmly establish the relationship between dose reduction and sustained virological response.

Prevalence and predictors of sexual dysfunction in long-term survivors of marrow transplantation.

PURPOSE: To describe the prevalence of sexual difficulties in men and women after marrow transplantation (MT), and to define medical, demographic, sexual, and psychologic predictors of sexual dysfunction 3 years after MT. PATIENTS AND METHODS: Four hundred seven adult MT patients were assessed pretransplantation. Survivors repeated measures of psychologic and sexual functioning at 1 and 3 years posttransplantation. RESULTS: Data were analyzed from 102 event-free 3-year survivors who defined themselves as sexually active. Men and women did not differ in sexual satisfaction pretransplantation. At 1 and 3 years posttransplantation, women reported significantly more sexual dysfunction than men. Eighty percent of women and 29% of men reported at least one sexual problem by 3 years after MT. No pretransplantation variables were significant predictors of 3-year sexual satisfaction for women. For men, pretransplantation variables of older age, poorer psychologic function, not being married, and lower sexual satisfaction predicted sexual dissatisfaction at 3 years (R2=.28; P < .001). Women who were more dissatisfied 3 years after MT did not receive hormone replacement therapy (HRT) at 1 -year posttransplantation and were less satisfied at 1 year, but not pretransplantation (R2=.35; P < .001). CONCLUSION: Sexual problems are significant in the lives of MT survivors, particularly for women. Although HRT before 1 year posttransplantation improves sexual function, it does not ensure sexual quality of life. Intervention for women is needed to apply hormonal, mechanical, and behavioral methods to prevent sexual difficulties as early after transplantation as possible.

Multiple sexual partners: results of a national HIV/AIDS survey in the Central African Republic.

OBJECTIVES: To determine the prevalence and characteristics of individuals with more than one sexual partner in the Central African Republic during the previous 12 months. DESIGN: A national survey. METHODS: A stratified sample of 2589 individuals aged 15-50 years was interviewed in late 1989. The 157-question survey questionnaire was a modified version of a questionnaire developed by the World Health Organization Global Programme on AIDS. RESULTS: Thirty-four per cent of men and 17% of women reported having sex with more than one partner during the previous 12 months. For both men and women, logistic regression indicated that the risk of having multiple partners increased with being single compared with being married; being employed in a profession other than agriculture compared with being a farmer, unemployed, a housewife, or a student; living in an urban rather than a rural area; rape being part of their first sexual encounter; and combining sex with alcohol. Risk increased with increasing ability to read for men and with decreasing age and drinking alcohol for women. CONCLUSIONS: These findings can be used to develop and target HIV/AIDS prevention and control programmes and to improve mathematical models of the epidemic.

HIV infection and vaginal douching in central Africa.

OBJECTIVE: To determine whether vaginal douching is associated with HIV infection. METHODS: A total of 397 female patients who attended the referral clinic for sexually transmitted diseases in Bangui, Central African Republic, from August 1994 to February 1995, were interviewed regarding sexual behavior, sexual history, and vaginal douching during the previous 3 years. Pelvic examinations were conducted and vaginal and cervical fluids evaluated for genital infections. Blood was drawn for HIV and syphilis serologic testing. RESULTS: The seroprevalence of HIV infection in the study population was 34%. Twenty-one per cent of the 115 HIV-seropositive women had a consistent practice of douching with commercial antiseptics versus 35% of the 223 HIV-seronegative women [odds ratio (OR), 0.6; 95% confidence interval (CI), 0.4-0.9; after adjusting for lifetime number of sexual partners, marital status, and condom use]. In contrast, a higher percentage of HIV-seropositive than HIV-seronegative women had a consistent practice of douching with a non-commercial preparation (14.8 versus 6.7%; adjusted OR, 1.7; 95% CI, 1.0-3.0). CONCLUSION: Our results suggest that vaginal douching with non-commercial preparations is associated with an increased prevalence of HIV, whereas douching with commercial antiseptic preparations was associated with a lower prevalence of HIV. The findings from this cross-sectional survey require confirmation in prospective studies.

PIP: Previous research has suggested that frequent vaginal douching modifies vaginal flora and increases the risk of cervical infections -- a probable risk factor for human immunodeficiency virus (HIV). To assess the association between HIV infection and vaginal douching, 397 women attending a sexually transmitted disease clinic in Bangui, Central African Republic, during 1994-95 were interviewed regarding their sexual behavior and vaginal douching practices in the preceding 3 years. The overall HIV prevalence rate was 34%. Douching, primarily for hygiene or treatment of a vaginal discharge, was reported by 195 women (49%); its mean weekly frequency was 7 times. A commercial antiseptic was used by 140 women (72%); 48 (25%) used a noncommercial preparation (largely herbs) and 7 (3%) used water. The analysis was restricted to women who used commercial or noncommercial preparations at least once a week (104 and 32 women, respectively). 25 (21.7%) of the 115 HIV-positive women reported use of commercial antiseptics compared with 79 (35.4%) of seronegative women (odds ratio, 0.6; 95% confidence interval, 0.4-0.9 after adjustment for condom use, lifetime number of sexual partners, and marital status). Use of noncommercial preparations was reported by 17 (14.8%) seropositive and 15 (6.7%) seronegative women (adjusted odds ratio, 1.7; 95% confidence interval, l.0-3.0). Although these findings should be considered preliminary, it is speculated that the antifungal and bacteriostatic properties of commercial antiseptics used after sexual intercourse may reduce the inoculum of HIV through a flushing mechanism or reduce the frequency of sexually transmitted diseases that serve as co-factors for HIV infection. Moreover, the agents used in noncommercial preparations may irritate vaginal mucosa, enhancing HIV transmission.

Outcomes of coronary angioplasty procedures performed in rural hospitals.

PURPOSE: To determine how many rural hospitals in the United States performed coronary angioplasty; to compare patient outcomes in rural and urban hospitals; and to assess whether outcomes were better in rural hospitals in which more procedures were performed. SUBJECTS AND METHODS: In 1996, among patients 65 years of age and older, 201,869 coronary angioplasties were performed in 996 hospitals that were included in the Medicare Provider Analysis and Review files. Geographic location was defined as rural or urban, according to U.S. Census Bureau criteria. Outcome variables were in-hospital death and coronary artery bypass surgery performed during the same admission. Hospital volumes were categorized as low (< or = 100 cases or fewer per year), medium (101 to 200 cases per year), or high (> 200 cases per year). RESULTS: Fifty-one rural hospitals accounted for 4% of all angioplasties performed. After angioplasty, in-hospital mortality was greater in rural hospitals (8.1% versus 6.4%, P = 0.001) among patients with acute myocardial infarction, but was not different for patients without infarction (1.4% versus 1.3%, P = 0.41). Coronary artery bypass surgery rates during the same admission were similar in rural and urban hospitals. In general, in-hospital mortality and same-admission surgery rates were lower in high-volume centers in both rural and urban areas. CONCLUSION: Although in-hospital mortality after angioplasty for acute myocardial infarction was worse in low- and medium-volume rural centers, overall outcomes in rural and urban hospitals were similar.

Association between percutaneous transluminal coronary angioplasty volumes and outcomes in the Healthcare Cost and Utilization Project 1993-1994.

Studies from a variety of settings have indicated that outcomes for coronary angioplasty are improved when performed in institutions with high caseloads (> 400/year). The purpose of this investigation was to examine the volume outcome hypothesis for coronary angioplasty in a 20% stratified sample of acute care, non-federal hospitals in 17 states. Data were derived from the Nationwide Inpatient Sample from the Health Care Cost and Utilization Project releases 2 and 3. From these records, 163,527 angioplasties from 214 hospitals were selected. Outcomes included hospital mortality, same-admission coronary artery bypass surgery, and a combined end point of either death or same-admission surgery, or both. Hospital volumes were defined as low (< or = 200 cases/year), medium (201 to 400), and high (> 400). Analyses were conducted separately for patients with and without a principal discharge diagnosis of acute myocardial infarction (AMI). For both AMI and no-AMI groups, the rates of adverse outcomes were generally lower in high-volume institutions, and this finding was true in both univariate and multivariate analyses. Although 27% of hospitals were in the low-volume category, only 5% of all procedures were performed in these institutions. Projecting to all United States hospitals for the 2 years, if all procedures performed in low-volume centers had been done in high-volume institutions, 137 deaths could have been averted (90 AMIs, 47 no-AMIs) as well as 404 (46 AMIs, 358 no-AMIs) same-admission surgeries. The results of this study support the hypothesis that better results are obtained in higher volume institutions, but also show that in 1993 and 1994, relatively few patients had their procedures performed in low-volume institutions.

A comparison of percutaneous transluminal coronary angioplasty in the Department of Veterans Affairs and in the private sector in the State of Washington.

Coronary angioplasty is performed > 1,000 times daily in a variety of health care settings in the public and private sectors in the USA. How outcomes for this procedure differ in the Department of Veterans Affairs and the private sector is unknown. The purpose of this study was to compare outcomes of coronary angioplasty performed in hospitals in the Department of Veterans Affairs and the State of Washington. This study used administrative data from the Department of Veterans Affairs patient treatment file (n = 8,326) and the State of Washington episode of illness file (n = 6,666) and included men who underwent coronary angioplasty in 1993 and 1994. Outcomes included (1) in-hospital mortality and mortality at 10 and 30 days after hospital admission, and (2) the use of coronary artery bypass surgery at similar intervals. Patients with a principal diagnosis of acute myocardial infarction were analyzed separately. Men in the Department of Veterans Affairs had more comorbid conditions than their counterparts in Washington State, and the length of hospital stay was longer in the former group. After using logistic regression to adjust for patient differences, mortality rates for the 2 groups of patients with acute myocardial infarction were similar, although bypass surgery was used more frequently in patients in Washington State. For patients without myocardial infarction, hospital and 10-day mortality did not differ with respect to health care system, and the use of bypass surgery subsequent to angioplasty was similar. In the Department of Veterans Affairs, most hospitals had low institutional caseloads (< 150 procedures per year), whereas > 40% of Washington State hospitals performed > or = 300 procedures per year. Although there were greatly differing institutional caseloads, mortality and the need for early bypass surgery were similar in the 2 systems.

Coronary angioplasty outcomes in the Healthcare Cost and Utilization Project, 1993-1994.

It is estimated that >400,000 percutaneous transluminal coronary angioplasty (PTCA) procedures are performed in the Unites States annually. This study reports patient characteristics and outcomes for 163,527 PTCAs performed in 214 hospitals in 17 states from 1993 to 1994. These hospitals were a 20% random sample of hospitals in the Healthcare Cost and Utilization Project, which was designed to reflect hospitalization in the United States, generally. Cases with International Classification of Diseases, 9th Revision, Clinical Modification procedure codes 36.01, 36.02, and 36.05 were defined as PTCA and were categorized as to whether acute myocardial infarction (AMI) was the principal discharge diagnosis. The average age of 44,270 AMI discharges (27%) was 62 +/- 12 years and that of 119,257 no-AMI cases (73%) was 64 +/- 11 years; 1/3 of both groups were women, 88% were white, and almost 90% had Medicare or private insurance as the primary payer. The states contributing the most cases were Florida (26%), California (12%), and Wisconsin (10%). Hospital mortality was 1.7% overall and was 3.8% for AMI and 0.8% for no-AMI cases. Bypass surgery performed during the same admission was 3.4% overall and was 4.5% and 3.0% for AMI and no-AMI cases, respectively. Multivariate analysis showed that advanced age, diabetes, female gender, and Medicaid payer status were associated with increased risk of mortality. National estimates from this 20% sample indicate that >850,000 PTCAs were performed in the 2 years, with 452,319 cases estimated for 1994. In 1994 there were an estimated 2,789 deaths and 9,903 bypass surgeries in the no-AMI subset of 327,856 procedures. For the AMI group of 124,463 procedures, there were 4,486 deaths and 5,799 bypass surgeries in 1994. This study of PTCA outcomes contains the largest number of cases as well as the most representative sample reported to date.

Recovery after allogeneic marrow transplantation: prospective study of predictors of long-term physical and psychosocial functioning.

No prospective data have documented the physical and psychosocial functioning of patients before and after BMT. In this study 67 allogeneic transplant patients completed standardized self-report measures pre-transplant. Survivors were re-assessed at 90 days (n = 34) and 1 year (n = 31) post-transplant. Telephone interviews established 4-year work history and performance status. Physical function was most impaired at 90 days post-transplant, with a return to pre-transplant levels of functioning by 1 year in most areas. By 2 years post-transplant, 68% of patients had returned to full-time work. Only 9% of 4-year survivors failed to return to full-time occupations. Mean levels of anxiety and depression did not change over the first year. Pre-transplant, 27% of patients reported depression and 41% reported elevated anxiety. Greater emotional distress at 1 year was predicted by pre-transplant family conflict, non-married status and development of less severe chronic GVHD. Impaired physical recovery at 1 year was predicted by more severe chronic GVHD, pre-transplant physical impairment and family conflict. The large majority of long-term survivors returned to full-time employment with normal physical and psychosocial functioning, although recovery took longer than 1 year for approximately 40%. Family relationships were important determinants of physical and emotional recovery.

Chemoradiotherapy toxicity during bone marrow transplantation: time course and variation in pain and nausea.

Chemoradiotherapy-induced toxicity following unmodified allogeneic marrow grafting was studied. Patients with hematologic malignancy (n = 157) received cyclophosphamide (120 mg/kg) followed by single or fractionated total body irradiation (TBI); aplastic anemia patients (n = 41) received only cyclophosphamide (200 mg/kg). Physicians rated mucositis, pain and nausea daily as (0) none, (1) mild, (2) moderate, (3) severe, (4) life threatening. Oral mucositis pain began several days prior to transplant, peaked during the second week after transplant, and declined thereafter. Patients with hematologic malignancies (maximum mean rating of 1.6, day 11) experienced more pain than aplastic anemia patients (maximum mean rating of 0.7, day 6). Nausea peaked before transplant and gradually declined. Nausea was higher (p less than 0.001) in patients with aplastic anemia (maximum mean rating of 1.3, day -2) than with hematologic malignancies (maximum mean rating of 0.9, day -6). There was no significant difference between single dose 1000 cGy and 6-day 1200 cGy irradiation. Recipients of 1575 cGy rather than 1200 cGy TBI had significantly (p less than 0.01) higher levels of pain (mean rating 1.25 and 0.82, respectively) and nausea (mean rating 1.27 and 0.72, respectively). Additional research is needed to determine the predictors, consequences and best methods of controlling these toxicities.

Hospitalizations in Niger (West Africa) for complications from arterial hypertension.

Fifty-four patients hospitalized in Niger for complications from hypertension between September 1988 and October 1989 were studied. The following complications were observed: left ventricular hypertrophy (56%), coronary vascular defect (35%), left heart deficiency (26%), cardiac failure (32%), retinopathy (56%), renal insufficiency (35%), and stroke (24%). The most frequent risk factor was Type A personality (76%), followed by stress (48%), excess weight (37%), tobacco use (35%), hyperuricemia (35%), hypercholesteremia (17%), and diabetes (15%). Complications from hypertension may well become a major problem for African countries as they develop.

Evaluation of a command-line parser-based order entry pathway for the Department of Veterans Affairs electronic patient record.

OBJECTIVE: To improve and simplify electronic order entry in an existing electronic patient record, the authors developed an alternative system for entering orders, which is based on a command- interface using robust and simple natural-language techniques. DESIGN: The authors conducted a randomized evaluation of the new entry pathway, measuring time to complete a standard set of orders, and users' satisfaction measured by questionnaire. A group of 16 physician volunteers from the staff of the Department of Veterans Affairs Puget Sound Health Care System-Seattle Division participated in the evaluation. RESULTS: Thirteen of the 16 physicians (81%) were able to enter medical orders more quickly using the natural-language-based entry system than the standard graphical user interface that uses menus and dialogs (mean time spared, 16.06 +/- 4.52 minutes; P=0.029). Compared with the graphical user interface, the command--based pathway was perceived as easier to learn (P<0.01), was considered easier to use and faster (P<0.01), and was rated better overall (P<0.05). CONCLUSION: Physicians found the command- interface easier to learn and faster to use than the usual menu-driven system. The major advantage of the system is that it combines an intuitive graphical user interface with the power and speed of a natural-language analyzer.

Stability of in vitro fertilization-embryo transfer success rates from the 1989, 1990, and 1991 Clinic-Specific Outcome Assessments.

OBJECTIVE: To determine if the differences in IVF-ET success rates among clinics are due to chance alone. DESIGN: Retrospective analysis of data reported by individual clinics. SETTING: One hundred seventy-five clinics in 1989, 192 clinics in 1990, and 208 clinics in 1991 that reported IVF-ET success rates to the Society for Assisted Reproductive Technology and the American Society for Reproductive Medicine (formerly The American Fertility Society). PATIENTS: Women < 40 years of age with no male factor. INTERVENTION: In vitro fertilization-ET. MAIN OUTCOME MEASURE: Delivery rate per retrieval and delivery rate per transfer. RESULTS: The hypothesis that the differences among IVF-ET success rates for clinics is due to chance alone can be rejected. Seven clinics were found to have pregnancy rates significantly higher than average and six clinics were found to have pregnancy rates significantly lower than average. Significant correlations were found between different years in the success rates for individual clinics but not for success as a function of the number of patients treated. CONCLUSIONS: Success rates for a few clinics are significantly different from the average success rate, but success rates must be used with caution in selecting a clinic.

Development of a behavioral measure of mouth pain, nausea, and wellness for patients receiving radiation and chemotherapy.

Toxicities from the chemotherapy and irradiation preparative regimen for bone marrow transplantation include nausea, emesis, and oral pain. Behavioral measures were developed as alternatives to paper and pencil measures of these symptoms because patients are sometimes too ill, unavailable, or unwilling to complete self-report scales. Behavioral observations also provide supplements to self-report for these multidimensional symptoms. For 24 days during the acute phase of transplantation, nurses rated the behavior of adult patients on: (a) oral pain (for example, requests pain medication or refuses mouth examination), (b) nausea (for instance, retches or keeps emesis basin near), (c) wellness (for example, talks voluntarily or smiles), (d) verbal complaints of pain, and (e) verbal complaints of nausea. The behavioral measures demonstrated good interday reliability (range, 0.70-0.86) and construct validity as demonstrated by a multitrait, multimethod correlation matrix.

Evaluation of an AIDS training program for traditional healers in the Central African Republic.

Training designed to improve AIDS knowledge, attitude, and practice was delivered to 96 traditional healers in the Central African Republic. The training (17 to 36 hours) was conducted by traditional healers with the assistance of staff from the Ministry of Health. Training included the following topics: prevention of HIV transmission during traditional practice; diagnosis, treatment, and prevention of sexually transmitted diseases; condom promotion; AIDS education at the community level; psychosocial support for people with AIDS; and promotion of a positive image for traditional healers. The evaluation of the training consisted of a prospective assessment of knowledge and attitude immediately prior to and after training. These assessments were conducted using structured interviews. Improvement in knowledge and/or attitudes was observed in all areas assessed except for prevention of HIV transmission during traditional practice. We concluded that AIDS training can be successfully delivered to traditional healers.

Development of a measure of job satisfaction for dentists and dental auxiliaries.

This paper describes the development of a multidimensional, 38-item measure of job satisfaction appropriate for dentists, dental hygienists, and dental assistants. Items were grouped into the following 12 subscales: income, recognition, opportunity to develop professionally, time to develop professionally, responsibility, non-patient tasks, staff relations, quality of care, leisure time, fatigue, time pressure and general satisfaction. The measure was developed from a set of 45 items included in questionnaires administered to dentists and staff of 126 dental practices in Washington State, USA. Questionnaires were returned by 117, 121 and 106 dentists; 69, 80, and 82 hygienists; and 322, 329, and 320 assistants, respectively, in each of the 3 yr (1979, 1980, 1981). Factor analysis (principal components analysis with varimax rotation) plus categorization of items by a panel of professionals were used to initially group items into subscales. Contribution to internal consistency was the final criterion for an item's inclusion in a subscale. Internal consistency reliability of subscales ranged from 0.68 to 0.95. Statistically significant relationships were found between individual job satisfaction subscales and intent to change job for hygienists and assistants.

A model for reducing the cost of care in VA medical centers that offer adult day health care.

One approach to providing cost-effective adult day health care (ADHC) services is to guide both the inputs to ADHC services and the provision of other services so that substitution for institutional services can realistically take place. This approach has been used in a randomized clinical trial to evaluate the medical efficacy and cost of ADHC in the Department of Veterans Affairs (DVA). This article describes the strategies that were used to improve the cost effectiveness of ADHC during the evaluation. Cost and use estimates were developed based on the best data available from the DVA and previous research on the cost for patients' use of ADHC, nursing home, hospital, and ambulatory care. A cost workshop was attended by the ADHC managers to develop plans for controlling costs. Plans were identified that increase the likelihood that ADHC can be shown to be less costly than customary care.

Methods of determining the cost of health care in the Department of Veterans Affairs medical centers and other non-priced settings.

Cost is increasingly important in the evaluation of health care. Though charges are often used as a proxy for cost, some health care systems such as the Veterans Administration do little or no billing. This article describes, presents examples of, and evaluates four options for determining the cost of care within the Department of Veterans Affairs: measuring input costs, the Department's cost accounting system, the reimbursement system, and use of charges from a surrogate health care facility. Each approach is evaluated for accuracy, ability to compare the costs of different treatments, and effort required to estimate cost.

Time to adoption of an innovation by dentists in private practice: sealant utilization.

Dentists can be divided into five adoption categories based upon their time of adoption of pit and fissure sealants: innovators, early adopters, early majority, late majority, and laggards. The differences among dentists in the five adoption categories were examined for four classes of variables: practice characteristics, dentist characteristics, communication of information, and practice environment. Questionnaires were mailed in September 1984 to a random sample (N = 521) of Washington State dentists in general practices. A total of 376 completed questionnaires were returned, for a response rate of 72 percent. Adoption of sealants proceeded as follows: 5 percent of dentists through 1973, 24 percent through 1979, 50 percent through 1982, and 75 percent through 1984. Adoption category was related to percent of assistants who were certified, delegation to assistants and hygienists, magnitude of the fees charged by the practice, number of staff meetings per month, the dentist having been an officer in a dental organization, year the dentist adopted other new technologies, dentist's self-rating of willingness to try new things, percent of patients who are children, and percent of the dentist's colleagues who used sealants. These data lend some support to the two-stage or opinion-leader model of diffusion and suggest that new technologies can be promoted by first influencing dentists who consistently adopt early.

A study of the intentional use of pit and fissure sealants over carious lesions.

This article reports data on the intentional use by dentists of pit and fissure sealants over carious lesions. In early 1985 a random sample of 127 dentists in general practice and 20 pedodontists from Washington State were interviewed by phone. Completed interviews were obtained from 81.9 percent (N = 104) of the general practitioners and 60.0 percent (N = 12) of the pedodontists. Eighteen percent of the dentists who offer sealants in their practice use sealants on "incipient" or "superficial" lesions. The major reasons given for not sealing lesions are: concern about failure or leakage, lack of confidence, or amalgams would be better. Dentists who seal lesions have larger practices in terms of the number of operatories and patients seen per week, place sealants on a larger proportion of their child patients, and more frequently delegate sealants to the hygienist. There is no relationship between placing sealants on lesions and placing sealants on primary teeth, the dentist's year of graduation, the number of years the dentist has used sealants, being a pedodontist, or employing a hygienist.