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Biomedical subjects

K C Stange

Publications and source records attributed to K C Stange.

At least 37 records · Page 2Linked to original sources
PubMed2000

Facilitating participatory decision-making: what happens in real-world community practice?

BACKGROUND: Participatory decision-making (PDM), a widely held ideal, depends on physician facilitation of patient participation. However, little is known about how PDM facilitation is actualized in outpatient primary care. OBJECTIVES: The objective of this study was to describe the prevalence of physician facilitation of PDM in community family practices and associated physician, patient, and visit characteristics. RESEARCH DESIGN: This was a cross-sectional observational study. SUBJECTS: The study included 3,453 patients seen by 138 family physicians in 84 community practices. MAIN OUTCOME MEASURES: Research nurses directly observed PDM facilitation in consecutive adult outpatient visits. The association between PDM facilitation and patient, physician, and visit characteristics was assessed with multilevel multivariable regression. RESULTS: PDM facilitation occurred during 25% of observed patient visits. Rates varied considerably among physicians, from 0% to 79% of visits. Patient satisfaction was not associated with PDM facilitation. In multivariable analyses, employed physicians, chronic illness visits, longer visit duration, and visits involving referral were independently associated with PDM facilitation. Visits in which greater time was spent planning treatment and conducting health education were also more likely to involve facilitation of PDM. CONCLUSIONS: Community family physicians facilitate PDM at highly variable rates but focus it on patients with the greatest medical needs and most complex levels of decision making. This selective approach appears to meet patient expectations, because PDM facilitation and patient satisfaction are not associated. If patient participation is to be more widely incorporated into outpatient primary care, it must be addressed within the complexity and multiple demands of community practice.

Adolescent↗
PubMed2000

Sustained personal autonomy: a measure of successful aging.

OBJECTIVES: This study addresses the following question: What characteristics of urban, noninstitutionalized elders predict which individuals are most likely to remain independent of personal assistance during a 2-year observation period? METHODS: A population-based sample of 602 noninstitutionalized urban residents aged 70 and older was followed for 2 years. RESULTS: Ninety-eight of the 487 survivors remained independent. Factors associated with sustained independence were relatively younger age, male gender, fewer medical conditions, good physical function, and nonsmoking. The attitudes "favors family or self over agency assistance" and "does not expect filial obligation" were also independently associated. DISCUSSION: The results are consistent with previous studies of successful aging and show that attitudes expressed at baseline favoring personal independence are associated with sustained autonomy during a period of at least 2 years.

Age Factors↗
PubMed2000

Two physician styles of focusing on the family.

BACKGROUND: Previous research has identified 2 styles of family physicians' focus on the patient's family: (1) using the family history as the context of care of the patient; and (2) maintaining a family orientation with the family as the unit of care. The purpose of our study was to determine whether these styles affect patient outcomes and time use during outpatient visits. METHODS: In a cross-sectional study, data on 4454 outpatient visits to 138 community family physicians were collected using direct observation, patient and physician questionnaires, and medical record review. We computed partial correlations between the physician's family practice style score and patient outcomes for delivery of preventive services, patient visit satisfaction, and patient-reported delivery of specific components of primary care. We controlled for relevant patient characteristics. RESULTS: The patients of the physicians using either practice style had similar levels of satisfaction with coordination of care and interpersonal communication, and their value of continuity of care was comparable. Patients of physicians with a family-history style, however, rated their physicians lower on a measure of in-depth knowledge of the patient and family but higher on preventive services delivery. Differences in time use during the visit reflected how these styles were manifested during the outpatient visit. CONCLUSIONS: The different styles physicians use to focus on the family affect the process and outcomes of patient care. This difference may be explained by the developmental life cycle of family physicians, as younger physicians may be more focused on family history and older physicians may have a more family-oriented focus. Physicians may need to find alternate ways of meeting those patient needs not well met by their predominant practice style.

Cross-Sectional Studies↗
PubMed1999

Colorectal carcinoma screening attitudes and practices among primary care physicians in counties at extremes of either high or low cancer case-fatality.

BACKGROUND: To the authors' knowledge, physician attitudes and reported practices regarding colorectal carcinoma screening have not been studied in areas of highest risk for cancer death. METHODS: Medicare claims were used to calculate colorectal carcinoma 2-year case-fatality rates for counties with >100 incident cases of colorectal carcinoma between 1991-1993. All 2682 practicing primary care physicians in 20 counties with the lowest case-fatality rates (mean of 29.9%) and 19 counties with the highest case-fatality rates (mean of 47.8%) were surveyed regarding their screening procedures and attitudes. RESULTS: Among the 972 respondents (36.1%), the reported use of fecal occult blood testing (FOBT) and flexible sigmoidoscopy was similar in the low and high case-fatality counties. However, physicians who practiced in the high case-fatality counties were less likely to be trained in and to perform sigmoidoscopy themselves (37.0% vs. 45.6%; P<0.01). Moreover, practitioners in the high case-fatality counties were more likely than the other physicians to consider or plan enhanced FOBT and sigmoidoscopic screening in the near future. FOBT and sigmoidoscopy screening rates at the county level were associated negatively with cancer incidence rates, case-fatality rates, and metastatic disease rates, suggesting a potentially protective effect. CONCLUSIONS: Geographically targeted interventions are a potentially cost-effective strategy for focusing additional screening services on the highest risk populations. The primary care clinicians in these high risk areas are logical partners for these interventions by virtue of their high degree of readiness to change their current screening practices.

Attitude to Health↗
PubMed1999

Direct observation of health-habit counseling of adolescents.

OBJECTIVES: To determine the rate of health-habit counseling of adolescents seeing community family physicians and to identify the factors associated with the delivery of recommended preventive counseling services. DESIGN: Cross-sectional multimethod study emphasizing direct observation of patient visits. SETTING: Community family practices in northeast Ohio. PATIENTS OR OTHER PARTICIPANTS: Adolescents (n = 445) aged 11 to 21 years who were being seen for outpatient visits to community family physicians (n = 119) during 2 days of observation by trained research nurses. MAIN OUTCOME MEASURE: Direct observation of the delivery of clinical preventive counseling services recommended by the Guidelines for Adolescent Preventive Services. RESULTS: During the 445 visits made by adolescents, the most frequently delivered counseling service was exercise advice (13%). At least 1 health-habit counseling service was delivered during 38% of visits. In multivariable analyses, older patient age was strongly associated with increased service delivery. Visits for well care, longer visits, and new patient visits were also associated with the provision of counseling. Visits including preventive counseling services were on average 2.5 minutes longer than visits without preventive counseling. CONCLUSIONS: The rates of delivery of preventive counseling services in clinical practice were low, raising concern about the feasibility of current recommendations. The practical implementation of prevention guidelines may require a greater use of well-care visits and longer patient visits than are currently used in community family practice.

Adolescent↗
PubMed1999

Direct observation of exercise counseling in community family practice.

BACKGROUND: Although physical activity is important for the prevention and management of a variety of common chronic diseases, the prevalence and patient and visit characteristics associated with provision of physical activity advice by community family physicians is not well understood. METHODS: In a cross-sectional multi-method study of 138 family physicians in northeast Ohio, exercise advice was measured by direct observation and patient report of consecutive patient visits to 138 practicing family physicians. The association of exercise advice with patient and visit characteristics, assessed by direct observation, medical record review, patient exit questionnaire, and billing data, was determined by logistic regression analysis. RESULTS: In 4,215 visits by patients older than 2 years of age, exercise counseling was observed during 927 visits (22.3%), but reported by only 13% of patients returning questionnaires. The mean time spent counseling about exercise was 0.78 minutes, with a range of 0.33 to 6.00 minutes (SD = 0.67). Exercise advice was more common during longer visits, visits for well care, and visits by patients who were older, male, and had chronic illnesses for which lack of physical activity is a risk factor. CONCLUSIONS: Exercise counseling is relatively common during outpatient visits to family physicians, and is more commonly given to patients with risk factors. Multiple patient visits over time present opportunities to integrate exercise counseling among the competing demands of primary care practice.

Adult↗
PubMed1999

The sensitivity of Medicare claims data for case ascertainment of six common cancers.

BACKGROUND: Although Medicare claims data have been used to identify cases of cancer in older Americans, there are few data about their relative sensitivity. OBJECTIVES: To investigate the sensitivity of diagnostic and procedural coding for case ascertainment of breast, colorectal, endometrial, lung, pancreatic, and prostate cancer. SUBJECTS: Three hundred and eighty nine thousand and two hundred and thirty-six patients diagnosed with cancer between 1984 and 1993 resided in one of nine Surveillance Epidemiology and End Results (SEER) areas. MEASURES: The sensitivity of inpatient and Part B diagnostic and cancer-specific procedural codes for case finding were compared with SEER. RESULTS: The sensitivity of inpatient and inpatient plus Part B claims for the corresponding cancer diagnosis was 77.4% and 91.2%, respectively. The sensitivity of inpatient claims alone was highest for colorectal (86.1%) and endometrial (84.1%) cancer and lowest for prostate cancer (63.6%). However, when Part B claims were included, the sensitivity for diagnosis of breast cancer was greater than for other cancers (93.6%). Inpatient claim sensitivity was highest for earlier years of the study, and, because of more complete data and longer follow up, the highest sensitivity of combined inpatient and Part B claims was achieved in the late 1980s or early 1990s. CONCLUSIONS: Medicare claims provide reasonably high sensitivity for the detection of cancer in the elderly, especially if inpatient and Part B claims are combined. Because the study did not measure other dimensions of accuracy, such as specificity and predictive value, the potential costs of including false positive cases need to be assessed.

Aged↗
PubMed1999

The utility of Medicare claims data for measuring cancer stage.

BACKGROUND: The validity of using claims data for measuring tumor stage, one of the most important determinants of choice of therapy and long-term survival, is unknown. OBJECTIVES: To determine the relative accuracy of both inpatient and hospital Outpatient Medicare claims for measuring the stage of disease of six commonly diagnosed cancers. RESEARCH DESIGN: Analysis of a database linking Surveillance, Epidemiology, and End Results (SEER) registry data and Medicare claims in patients aged 65 years with cancer. SUBJECTS: Three hundred twenty thousand, six hundred and thirty seven cases of invasive breast, colorectal, endometrial, lung, pancreatic, and prostate cancers diagnosed between 1984 and 1993. MEASURES: Using SEER files as the "gold standard," concordance with Medicare claims, as well as sensitivity and positive predictive value of coding for each stage was measured. RESULTS: Although Medicare data correctly categorized local, regional, and distant stage tumors in 97%, 33%, and 65%, respectively, the data substantially overestimated the proportion of localized tumors and underestimated the rate of regional stage disease. The highest concordance was observed for breast and colorectal cancer. However, the sensitivity and positive predictive values were never simultaneously 80% within one stage of a specific cancer. The accuracy of coding for stage in Outpatient files was inferior to inpatient data. CONCLUSIONS: With few exceptions, Medicare claims have limited utility as a measure of cancer stage. If tumor registry data are not available, investigators should consider the trade offs in sensitivity and predictive value when considering a study that will use claims data.

Aged↗
PubMed1999

Does managed care restrictiveness affect the perceived quality of primary care? A report from ASPN. Ambulatory Sentinel Practice Network.

BACKGROUND: The competitive managed care marketplace is causing increased restrictiveness in the structure of health plans. The effect of plan restrictiveness on the delivery of primary care is unknown. Our purpose was to examine the association of the organizational and financial restrictiveness of managed care plans with important elements of primary care, the patient-clinician relationship, and patient satisfaction. METHODS: We conducted a cross-sectional study of 15 member practices of the Ambulatory Sentinel Practice Network selected to represent diverse health care markets. Each practice completed a Managed Care Survey to characterize the degree of organizational and financial restrictiveness for each individual health care plan. A total of 199 managed care plans were characterized. Then, 1475 consecutive outpatients completed a patient survey that included: the Components of Primary Care Instrument as a measure of attributes of primary care; a measure of the amount of inconvenience involved with using the health care plan; and the Medical Outcomes Study Visit Rating Form for assessing patient satisfaction. RESULTS: Clinicians' reports of inconvenience were significantly associated (P < .001) with the financial and organizational restrictiveness scores of the plan. There was no association between plan restrictiveness and patient report of multiple aspects of the delivery of primary care or patient satisfaction with the visit. CONCLUSIONS: Plan restrictiveness is associated with greater perceived hassle for clinicians but not for patients. Plan restrictiveness seems to be creating great pressures for clinicians, but is not affecting patients' reports of the quality of important attributes of primary care or satisfaction with the visit. Physicians and their staffs appear to be buffering patients from the potentially negative effects of plan restrictiveness.

Adult↗
PubMed1998

Use of Medicare claims data to measure county-level variations in the incidence of colorectal carcinoma.

BACKGROUND: Population-based cancer registries that can be used to compare cancer incidence and mortality across regions of the U.S. are currently lacking. The authors conducted this study to validate Medicare claims as a measure of county-level colorectal carcinoma incidence among older Americans. Variations found among counties are described in this article. METHODS: A total of 183,174 hospitalized patients age 65 years in 1991-1993 with newly diagnosed colorectal carcinoma who resided in one of 480 large counties were identified in Medicare files. The county-level truncated age, race, and gender adjusted incidence rates for the population age 65 years, the proportion of patients with a code indicating distant metastases, and the 2-year case-fatality rates were determined. Corresponding rates from the SEER database were compared. RESULTS: The median truncated adjusted 3-year incidence rate was 870 per 100,000 (Quartile 1-Quartile 3, 779-955), with almost twofold differences among counties even after the exclusion of outliers. The median proportion of patients with codes indicating distant metastases was 23.4% (range, 10.2-46.9%; Quartile 1-Quartile 3, 20.8-25.8), and the average 2-year case-fatality rate was 39.2% (range, 26.5-51.4%; Quartile 1-Quartile 3, 37.0-41.6). Medicare files tended to underestimate the truncated incidence rate according to SEER, but among counties the two sets of rates were closely correlated (r = 0.94, P < 0.0001). CONCLUSIONS: Medicare files are a potential alternative source of national data for the study of colorectal carcinoma incidence among the elderly at the county level. The data also suggest significant variations among counties in colorectal carcinoma incidence, stage, and mortality that could be used in public health initiatives.

Age Factors↗
PubMed1998

How valid are medical records and patient questionnaires for physician profiling and health services research? A comparison with direct observation of patients visits.

OBJECTIVES: This study was designed to determine the optimal nonobservational method of measuring the delivery of outpatient medical services. METHODS: As part of a multimethod study of the content of primary care practice, research nurses directly observed consecutive patient visits to 138 practicing family physicians. Data on services delivered were collected using a direct observation checklist, medical record review, and patient exit questionnaires. For each medical service, the sensitivity, specificity, and Kappa statistic were calculated for medical record review and patient exit questionnaires compared with direct observation. Interrater reliability among eight research nurses was calculated using the Kappa statistic for a separate sample of videotaped visits and medical records. RESULTS: Visits by 4,454 patients were observed. Exit questionnaires were returned by 74% of patients. Research nurse interrater reliabilities were generally high. The specificity of both the medical record and the patient exit questionnaire was high for most services. The sensitivity of the medical record was low for measuring health habit counseling and moderate for physical examination, laboratory testing, and immunization. The patient exit questionnaire showed moderate to high sensitivity for health habit counseling and immunization and variable sensitivity for physical examination and laboratory services. CONCLUSIONS: The validity of the medical record and patient questionnaire for measuring delivery of different health services varied with the service. This report can be used to choose the optimal nonobservational method of measuring the delivery of specific ambulatory medical services for research and physician profiling and to interpret existing health services research studies using these common measures.

Adult↗
PubMed1998

The association of attributes of primary care with the delivery of clinical preventive services.

OBJECTIVES: Evidence is building that primary care is associated with quality of care and cost effectiveness. Still, little is known of the contribution of specific attributes of primary care to important health outcomes, such as the delivery of preventive services. This study tests the association of specific attributes of primary care with a comprehensive measure of the delivery of preventive services. METHODS: A cross-sectional multimethod study design was used to examine 2,889 patient visits to 138 community-based primary care physicians. Four primary care attributes were measured: patient preference for their regular physician, interpersonal communication, physician's accumulated knowledge of the patient, and coordination of care. Delivery of US Preventive Service Task Force-recommended services were based on data collected from direct observation and medical record review. Hierarchical linear regression models (HLM) were used to test the association of each of the primary care attributes with being up to date on screening, immunization, and health habit counseling preventive services. Each regression model was adjusted for patient age, race, health status, and insurance type. RESULTS: Interpersonal communication and coordination of care scale scores were associated with being more up to date on screening services and health habit counseling. Accumulated knowledge and preference for regular physician were associated with being more up to date on immunizations. CONCLUSIONS: The attributes of primary care measured in this study are associated with the receipt of preventive services. Fostering the tenets of primary care may have an impact on the delivery of preventive services and possibly other important health outcomes.

Adolescent↗
PubMed1998

The value of a family physician.

BACKGROUND: Most efforts to improve health care have been made without a full understanding of the value of a primary care approach. METHODS: This article synthesizes the observations from the Direct Observation of Primary Care (DOPC) study. This multimethod study of 138 family physicians in 84 practices included direct observation of 4454 patients visits were used to describe aspects of family practice that may provide value for patients. RESULTS: Family physicians provide and coordinate care for a wide variety of patients problems, prioritizing these competing demands on the basis of relationships developed during multiple patient visits over time. They use acute and chronic illness visits as opportunities to integrate care for specific diseases, mental health, and preventive care in ways that are tailored to the specific needs of patients and families. Higher rates of delivery of core attributes of family practice are associated with patient satisfaction and preventive services delivery, and are diminished by forced discontinuity of care. CONCLUSIONS: Family physicians prioritize and deliver care according to a broad agenda based on patient needs. These needs are understood within ongoing relationships with the patient, family, larger health care system, and community. This integrative approach includes numerous avenues for affecting important patient outcomes that are unlikely to be optimally met by less integrated models of medical care. Expanding the value of family practice will require the development and application of new knowledge of the core structures, processes, and contexts of family practice, and their effects on patient outcomes.

Cross-Sectional Studies↗
PubMed1998

Understanding change in primary care practice using complexity theory.

BACKGROUND: Understanding the organization of primary care practices is essential for implementing changes related to delivery of preventive or other health care services. A theoretical model derived from complexity theory provides a framework for understanding practice change. METHODS: Data were reviewed from brief participant observation fieldnotes collected in the 84 practices of the Direct Observation of Primary Care (DOPC) study and in 27 practices from three similar studies investigating preventive services delivery. These data were synthesized with information from an extensive search of the social science, nursing, and health services literature concerning practice organization, and of the literature on complexity theory from the fields of mathematics, physics, biology, management, medicine, and family systems, to create a complexity model of primary care practice. RESULTS: Primary care practices are understood as complex adaptive systems consisting of agents, such as patients, office staff, and physicians, who enact internal models of income generation, patient care, and organizational operations. These internal models interact dynamically to create each unique practice. The particular shape of each practice is determined by its primary goals. The model suggests three strategies for promoting change in practice and practitioner behavior: joining, transforming, and learning. CONCLUSIONS: This model has important implications for understanding change in primary care practice. Practices are much more complex than present strategies for change assume. The complexity model identified why some strategies work in particular practices and others do not.

Family Practice↗
PubMed1998

Illuminating the 'black box'. A description of 4454 patient visits to 138 family physicians.

BACKGROUND: The content and context of family practice outpatient visits have never been fully described, leaving many aspects of family practice in a "black box," unseen by policymakers and understood only in isolation. This article describes community family practices, physicians, patients, and outpatient visits. METHODS: Practicing family physicians in northeast Ohio were invited to participate in a multimethod study of the content of primary care practice. Research nurses directly observed consecutive patient visits, and collected additional data using medical record reviews, patient and physician questionnaires, billing data, practice environment checklists, and ethnographic fieldnotes. RESULTS: Visits by 4454 patients seeing 138 physicians in 84 practices were observed. Outpatient visits to family physicians encompassed a wide variety of patients, problems, and levels of complexity. The average patient paid 4.3 visits to the practice within the past year. The mean visit duration was 10 minutes. Fifty-eight percent of visits were for acute illness, 24% for chronic illness, and 12% for well care. The most common uses of time were history-taking, planning treatment, physical examination, health education, feedback, family information, chatting, structuring the interaction, and patient questions. CONCLUSIONS: Family practice and patient visits are complex, with competing demands and opportunities to address a wide range of problems of individuals and families over time and at various stages of health and illness. Multimethod research in practice settings can identify ways to enhance the competing opportunities of family practice to improve the health of their patients.

Adult↗
PubMed1998

The family in family practice: is it a reality?

BACKGROUND: The purpose of this study was to describe, from multiple perspectives, the extent to which community family physicians focus on the family. METHODS: In a cross-sectional study, research nurses directly observed consecutive patient visits for 2 days in the offices of 138 community family physicians. Data were collected on 4454 outpatient visits using direct observation, patient and physician questionnaires, and medical record review. Descriptive statistics were calculated, and a factor analysis was used to identify subsets of correlated family focus descriptors. RESULTS: On average, 10% of the time intervals during patient visits was devoted to addressing family issues. Other family members were present during 32% of visits, and another family member's problems were discussed in 18% of visits. Seventy percent of patients reported that other family members see the same doctor. A family history was obtained during 51% of visits by new patients and 22% of visits by established patients. Genograms were present on 11% of charts and family folders were seldom used. The presence or absence of a family history of breast or colon cancer was noted in 40% of charts. A factor analysis identified two different physician styles: family history as a context for care of an individual patient, and the family as the unit of care. The latter approach correlated with the patient's assessment that the doctor knew their families. CONCLUSIONS: Family physicians show a high degree of emphasis on the family, and exhibit two different styles of family focus in community practice. The effects of these different approaches to family care on patient outcomes is an important area for future research.

Cross-Sectional Studies↗
PubMed1998

Trade-offs in high-volume primary care practice.

BACKGROUND: With today's emphasis on reducing costs and increasing efficiency, primary care physicians are under pressure to increase patient volume. This study was undertaken to (1) identify factors associated with differences in physician volume, and (2) test for differences in selected clinical outcomes and time use during patient visits. METHODS: Research nurses directly observed consecutive patient visits during 2 separate days in the offices of 108 community family physicians. Data on the content of 3893 outpatient visits were collected using direct observation, patient and physician questionnaires, and medical record review. Physicians with high-, medium-, and low-volume practices were compared in the rates of preventive services delivery, patient satisfaction, and time use during patient visits as measured with the Davis Observation Code. RESULTS: High-volume physicians had visits that were 30% shorter, scheduled one third fewer patients for well care, and were more likely to own their practice and to be male than were low-volume physicians. Time use during patient visits was remarkably similar for high- and low-volume physicians. However, after controlling for relevant patient characteristics, patients of high-volume physicians had lower up-to-date rates of preventive services and scored lower on measures of satisfaction and the doctor-patient relationship. CONCLUSIONS: Physicians with high-volume practices are more efficient than those with low-volume practices in providing similar services in a shorter amount of time. This greater apparent efficiency may come at a cost of lower rates of preventive services delivery, lower patient satisfaction, and a less positive doctor-patient relationship. Health care plans and physicians setting productivity goals should consider the trade-offs inherent in high-volume practice.

Adult↗