Biomedical subjects

Chao-Hsiun Tang

Publications and source records attributed to Chao-Hsiun Tang.

12 recordsLinked to original sources

PubMed2006

Willingness to pay for drug abuse treatment: results from a contingent valuation study in Taiwan.

OBJECTIVE: In this study, we attempted to describe and justify the use of a contingent valuation (CV) method to elicit the willingness to pay (WTP) for a drug abuse treatment program by the general public in Taiwan. METHOD: In total, 1817 CV survey questionnaires were conducted through telephone interviews from randomly dialed numbers. Subjects were members of the general public aged between 20 and 65 years, with full-time jobs, and residing in the three major Taiwanese cities of Taipei, Taichung, and Kaohsiung. Respondents' WTP for drug treatment programs was elicited for two different financing mechanisms: payment through 'compulsory' payroll tax/health insurance premiums, and through 'voluntary' donations. The WTP was modeled as a function of scenarios and policies of the treatment program, respondents' socio-demographic information, and their responses to knowledge and attitudes questions. RESULTS: The general public in Taiwan was estimated to be willing to pay between NT$81.00 and NT$95.00 per month for a drug abuse treatment program, while the benefits of drug abuse treatment were estimated to range between NT$12.8 billion and NT$15.0 billion in 2004 (US$1=NT$31.9 in 2004), which was equal to around 0.15% of Taiwan's GDP for that year. The general public in Taiwan was more willing to pay for drug abuse treatment via increases in NHI premiums than via donations. Preferences for the drug abuse treatment program were also found to be sensitive to the target treated population as well as the sequence in which the WTP questions were asked. CONCLUSIONS: Results of this study provide policymakers with important evidence on the monetary value of a substance abuse treatment program, allocation of healthcare resources, and a possible financing mechanism of the treatment program, which may be justified by knowledge of the WTP of the general public. This study has also advanced the knowledge of the methodological issues with regard to CV questionnaire design, and it provides a base case for further studies on drug abuse in Taiwan.

Adult↗

PubMed2006

Risk-adjusted cesarean section rates for the assessment of physician performance in Taiwan: a population-based study.

BACKGROUND: Over the past decade, about one-third of all births nationwide in Taiwan were delivered by cesarean section (CS). Previous studies in the US and Europe have documented the need for risk adjustment for fairer comparisons among providers. In this study, we set out to determine the impact that adjustment for patient-specific risk factors has on CS among different physicians in Taiwan. METHODS: There were 172,511 live births which occurred in either hospitals or obstetrics/gynecology clinics between 1 January and 31 December 2003, and for whom birth certificate data could be linked with National Health Insurance (NHI) claims data, available as the sample for this study. Physicians were divided into four equivalent groups based upon the quartile distribution of their crude (actual) CS rates. Stepwise logistic regressions were conducted to develop a predictive model and to determine the expected (risk-adjusted) CS rate and 95% confidence interval (CI) for each physician. The actual rates were then compared with the expected CS rates to see the proportion of physicians whose actual rates were below, within, or above the predicted CI in each quartile. RESULTS: The proportion of physicians whose CS rates were above the predicted CI increased as the quartile moved to the higher level. However, more than half of the physicians whose actual rates were higher than the predicted CI were not in the highest quartile. Conversely, there were some physicians (40 of 258 physicians) in the highest quartile who were actually providing obstetric care that was appropriate to the risk. When a stricter standard was applied to the assessment of physician performance by excluding physicians in quartile 4 for predicting CS rates, as many as 60% of physicians were found to have higher CS rates than the predicted CI, and indeed, the CS rates of no physicians in either quartile 3 or quartile 4 were below the predicted CI. CONCLUSION: Overall, our study found that the comparison of unadjusted CS rates might not provide a valid reflection of the quality of obstetric care delivered by physicians, and may ultimately lead to biased judgments by purchasers. Our study has also shown that when we changed the standard of quality assessment, the evaluation results also changed.

Adolescent↗

PubMed2006

Association between surgeon and hospital volume in coronary artery bypass graft surgery outcomes: a population-based study.

BACKGROUND: We have found no study conducted outside of the United States on the association between physician volume and patient outcomes after coronary artery bypass graft surgery. The aim of this study is to examine the association between surgeon-hospital coronary artery bypass graft volume and patient outcomes using three-year population-based data on Taiwan. METHODS: This study uses the Taiwan National Health Insurance Research Database covering the period 2000 to 2002, with the study sample comprising 9,895 first-time coronary artery bypass graft admissions, treated by 316 surgeons in 46 hospitals. RESULTS: Of the sampled patients, 356 (3.6%) were discharged after death. Those patients treated by low-volume (1-50 cases) surgeons had significantly higher mortality rates than those treated by medium-volume (51-100 cases) surgeons (7.0% vs 3.8%), high-volume (101-150 cases) surgeons (7.0% vs 2.7%), or very-high-volume (> or = 151 cases) surgeons (7.0% vs 3.2%). However, hospital coronary artery bypass graft volume alone is an insufficient predictor of hospital in-patient deaths (p = 0.078). The adjusted odds ratio of hospital in-patient deaths declined with increasing surgeon volume, with the odds of in-patient death for those patients treated by low-volume surgeons being 1.52 times those of medium-volume surgeons, 1.89 times those of high-volume surgeons, and 2.04 times those of very-high-volume surgeons. CONCLUSIONS: We conclude that for all coronary artery bypass graft surgeries taking place in Taiwan, the skill and experience of individual surgeons is a more critical factor for patient outcome than either hospital equipment or surgical teams.

Aged↗

PubMed2006

Delayed parenthood and the risk of cesarean delivery--is paternal age an independent risk factor?

BACKGROUND: Between 1995 and 2001, the average cesarean section rates in Taiwan were as high as 33.34 percent. This study set out to determine the independent effects of paternal age on the likelihood of cesarean delivery among a sample of Taiwanese women. METHODS: Logistic regressions were used to analyze 310,574 singleton deliveries by nulliparous women in Taiwan between 1999 and 2001, linking data abstracted from birth certificates and from the National Health Insurance claims database. After controlling for socioeconomic, pregnancy, and obstetric complications, as well as institutional factors, we investigated both maternal and paternal ages simultaneously, using the single category variable "parental age" to determine the differential age effects on the risk of cesarean delivery. RESULTS: Taking 20- to 29-year-old couples as the reference group, we observed that the relative risks of cesarean delivery become progressively higher with advancing age of the mother. At the same time, within each maternal group, positive and significant variations in cesarean rates occurred for different paternal age groups. The respective increases in the relative risks of cesarean delivery for men aged 20-29, 30-34, 35-39, and 40 years or more, in conjunction with women aged 20-29, 30-34 and 35 or over, are 34 percent from 1.00 to 1.34, 18 percent from 1.51 to 1.69, and 16 percent from 2.03 to 2.19. Other confounding variables are also taken into account. CONCLUSIONS: Irrespective of maternal age, advancing paternal age also appears to be an additional independent factor that has a strong association with the increase in cesarean section rates.

Adult↗

PubMed2005

Risk adjustment for inter-hospital comparisons of caesarean section rates in Taipei municipal hospitals.

BACKGROUND: This study sets out to determine whether adjustments for specific patient caesarean delivery risk factors have an affect on the assessment of performance rates among the municipal hospitals of Taipei City. METHODS: Analysis of National Health Insurance (NHI) claims data, linked with birth certificate data, was undertaken on a cohort of 27,693 live births in the six general hospitals of the Taipei Medical Hospital System (TMHS) between 1999 and 2001. Using multivariable logistic regression modeling of the risk factors independently associated with caesarean deliveries, an expected caesarean delivery rate was constructed for each of the hospitals. By contrasting observed rates with expected rates to quantify the magnitude of the deviation from average practice, a measurement similar to relative risk (RR) was also constructed for each hospital. RESULTS: The observed rates for two of the six hospitals examined fell within the expected 95% confidence interval (CI), two were above the expected upper limit, and two were below the expected lower limit. The RR ranking of Hospitals A (RR=1.08, CI=1.01-1.15) and C (RR=1.01, CI=1.00-1.03) improved from first to second, and third to fourth, whilst the RR of Hospitals B (RR=1.09, CI=1.05-1.14) and D (RR=1.02, CI=0.99-1.06) worsened from second to first, and fourth to third, respectively. The RR rankings of Hospitals E (RR=0.92, CI=0.88-0.96) and F (RR=0.80, CI=0.77-0.84) were the same as the observed rates. CONCLUSIONS: Caesarean delivery rate profiles, or hospital comparisons without risk adjustment, may be methodologically biased and may lead to unfair judgments by healthcare purchasers.

Adult↗

PubMed2005

Factors contributing to patient dumping in Taiwan.

OBJECTIVE: Little research has been carried out to explore the issues surrounding patient dumping outside of the US. This study, therefore, uses a national research survey to examine the factors contributing to patient dumping within Taiwan. METHODS: A self-administered postal survey was undertaken to assess the prevalence of patient dumping in Taiwan, with the study subjects being superintendents of general hospitals. Data from the Bureau of Medical Affairs at the Department of Health in Taiwan were used in conjunction with the Taiwan National Health Insurance Research Database (NHIRD) to obtain estimates of factors potentially contributing to patient dumping. A multiple logistic regression analysis was performed to determine the relationships between the perceived extent of patient dumping occurring within the respondents' healthcare networks, as well as other factors, including the total number of hospitals, total number of hospital beds, the percentages of beds in public, for-profit and teaching hospitals (vis-à-vis all hospital beds), discharges, discharges covered under the case payment system, transferred inpatients, and the perceived degree of competition within each healthcare market. RESULTS: A total of 485 survey questionnaires were distributed, of which 251 were returned, giving a response rate of 51.75%. The responses from 29.9% of the sample group indicated that the perceived extent of patient dumping occurring in their service area was 'serious' or 'very serious'. The regression analysis showed that after controlling for other factors, the superintendents' perceived extent of the patient dumping occurring within their healthcare networks was positively related to the total number of patients covered under the case payment system, the total number of discharged patients, the extent of healthcare market competition and the number of respondent's hospital beds. CONCLUSIONS: We conclude from our findings that, under the National Health Insurance system, patient dumping is a widespread problem within Taiwan's healthcare industry.

Health Services Research↗

PubMed2004

Using a population-based database to explore the inter-specialty differences in physician practice incomes in Taiwan.

Gaining an understanding of the distribution of physician incomes between different medical specialties could assist policymakers to predict the future medical manpower supply. The purpose of this study is to examine the differences in medical specialty-specific gross practice incomes between office-based physicians in Taiwan. The primary data source for the study, which includes 7444 office-based physicians, was provided by the Taiwan Department of Health, with the dependent variable of interest to this study being the annual gross income of physician practices, whilst the independent variable is physician specialty. The study controlled for physicians' age, gender, specialty-board status, type of practice, location of clinic and urbanization level of the community in which the practice was located. Multivariate regression analyses were carried out to explore the relationship between physician specialty and gross practice income. This study finds a significant relationship between the annual gross income of physician practices and the physician's medical specialty (P < 0.001). Of all physicians, those specializing in rehabilitation and orthopedics had the highest gross practice incomes; conversely, obstetricians and gynecologists had the lowest gross practice incomes. The regression analyses demonstrated that after adjusting for socio-demographic and professional characteristics, gross practice incomes of physicians were significantly related to their medical specialty. This study concludes that differences in the gross practice incomes of physicians were significantly related to medical specialties. Those physicians specializing in procedure-based specialties, such as rehabilitation and orthopedics, had higher practice incomes than their counterparts in other more diagnosis-oriented specialties such as family practice and pediatrics.

Adult↗

PubMed2004

Costs per discharge and hospital ownership under prospective payment and cost-based reimbursement systems in Taiwan.

This study in Taiwan examined the relationships between health care costs and hospital ownership under two financing systems with diametrically opposite incentives, case-payment (a form of prospective payment) and cost-based reimbursement. The universal sample of patients treated in 2000, for three standard care groups under each payment method, was included. The case payment diagnoses were uncomplicated cases of caesarean section, femoral/inguinal hernia operation and thyroidectomy, and the cost-based reimbursement diagnoses were uncomplicated cases of benign breast neoplasm, pneumococcal pneumonia and traumatic finger amputation. Costs per discharge were significantly lower in for-profit hospitals (by 2.8 to 5.7%) compared with public and not-for-profit hospitals for case payment diagnoses, which is consistent with the literature on US hospitals. For the cost-based reimbursement diagnoses, for-profits had 11.5 to 21.8% higher costs per discharge. The opposite direction of associations under the two payment systems validates the assumptions of the property rights theory in Taiwan's health care sector. Three plausible explanations for the study findings are suggested: (1). greater productive efficiency in private hospitals under case payment, (2). cost shifting from case payment diagnoses to cost-reimbursed diagnoses, and (3). patient dumping. Longitudinal studies using detailed hospital-level information with patient tracking facility are needed to clarify these issues.

Adult↗

PubMed2004

Association between maternal age and the likelihood of a cesarean section: a population-based multivariate logistic regression analysis.

BACKGROUND: A majority of studies examining the relationship between advancing maternal age and the likelihood of cesarean section (CS) use data from regional samples or from a limited number of medical institutions. This study uses population-based data from Taiwan to explore the relationship between maternal age and the likelihood of a CS. METHODS: The National Health Insurance Research Database (NHIRD) on registries of medical facilities and board-certified physicians and monthly claim summaries for inpatients were used. In total, 502 524 singleton deliveries were included in the study. Multivariate logistic regressions were performed with the presence of CS as the dependent variable and maternal age (<20, 20-29, 30-34 and >34 years) as the independent variable. The study controlled for maternal indications, institution characteristics, maternal requests and attending physician characteristics. RESULTS: CS rates for the age groups <20, 20-29, 30-34 and >34 years were 17.7, 27.4, 37.4 and 47.5%, respectively. The regression analyses consistently showed that the likelihood of a CS significantly increased with advancing maternal age within each category of complication after adjusting for medical institution characteristics and characteristics of the attending physician. CONCLUSIONS: This study found that, after adjusting for maternal indications, and healthcare institution and physician characteristics, there was a significant relationship between advancing maternal age and an increased likelihood of a CS. This finding, together with the high CS rate of 32.1% in Taiwan, one of the highest reported in the world today, highlights an imperative need to devise interventions to reduce the frequency of CSs.

Adult↗

PubMed2004

Opinions of hospital administrators toward the prevalence of patient dumping in Taiwan.

BACKGROUND: The purposes of this paper were to examine whether patient dumping has occurred under the National Health Insurance and to explore hospital administrators' attitudes toward the practice of patient dumping in Taiwan. METHODS: The study subjects were administrators in general hospitals that were accredited by the Taiwan Joint Commission on Hospital Accreditation as medical centers, regional hospitals, or district teaching hospitals in the years 2000 and 2001. A self-administered postal survey was conducted using a structured questionnaire mailed to 128 administrators in general hospitals. RESULTS: Of the respondents, 83 of 99 (83.8%) administrators perceived that patient dumping did occur in their service areas to a certain degree regardless of their hospital location, hospital level, or hospital ownership. A total of 67 of 74 (90.5%) administrators who attempted to answer the question on the prevalence of patient dumping perceived that different percentages (mean=13.27%) of hospitals transferred patients solely on economic considerations in their service areas. In addition, this study found that no statistically significant relationships existed between the administrators' perceived percentage of emergency patients received by their hospitals and hospital characteristics. However, there was a statistically significant relationship between the perceived percentage of inpatients received and hospital level (p = 0.007). CONCLUSION: According to the results of this study, we concluded that patient dumping is a serious and widespread problem in the healthcare industry in Taiwan. Patient dumping can jeopardize patient health and impair the financial integrity of receiving hospitals. Implementation of a case payment system may worsened the situation in Taiwan.

Attitude of Health Personnel↗

PubMed2004

Do consumers in Taiwan need physician information?

BACKGROUND: This article was written to determine the extent of consumers' needs for physician information and what information consumers use in decision making when selecting a physician. METHODS: To collect data, a self-administered questionnaire was hand-delivered to 700 patients who visited the general surgery outpatient departments of seven hospitals during June 2003. A multiple logistic regression was conducted to identify the statistically significant factors related to patients' needs to use physician information. RESULTS: Of the respondents (N = 687), 74.7% felt they "greatly needed" or "needed" physician information. About 90% of respondents would "certainly" or "possibly" change physicians if the performances of their physicians shown by physician profiling were not as good as others. Respondents ranked the three most needed physician information as specialties, malpractice history, and overall patient satisfaction level. The multiple logistic regression showed that respondent's age, hospital level, personal monthly income, and whether they had compared medical care quality provided by neighborhood physicians had significant relationships with the respondent's needs for physician information after adjusting for other factors. CONCLUSIONS: This study found that 88.1% of respondents were in need of some amount of physician information. This is in light of calls for physician profiling from consumer-oriented organizations to assist consumers in selecting suitable physicians. It is recommended that the healthcare industry in Taiwan make a significant investment in a physician profiling system. The performance measures of this physician profiling system should be developed based on inputs from consumers, physicians, insurance companies, and researchers in this field.

Adolescent↗

PubMed2003

Relationships between length of stay and hospital characteristics under the case-payment system in Taiwan: using data for vaginal delivery patients.

BACKGROUND: Case payment has been implemented since the beginning of Taiwan's National Health Insurance Program in 1995. This study selected patients undergoing a vaginal delivery to explore the relationships between maternal length of stay (LOS) and hospital characteristics under the case-payment system in Taiwan. METHODS: The National Health Insurance Research Database of 1999 from Taiwan's National Health Research Institutes was used in this study. In total, 5456 patients who underwent a vaginal delivery in 1999 meeting the selection criteria were drawn from the database. A multiple regression analysis was performed in which LOS was regressed against the variables of hospital level, hospital location, hospital ownership, and teaching status. RESULTS: The regression model indicated that hospital level, hospital ownership, and hospital location were significantly related to LOS after adjustment for patient age, principal procedure, and the presence of a secondary diagnosis. The LOS for patients undergoing a vaginal delivery in private hospitals was shorter than those in public and non-profit proprietary hospitals. Patients admitted to medical centers or regional hospitals were more likely to have a longer mean LOS in comparison with their counterparts admitted to district hospitals. The LOS for patients hospitalized in northern Taiwan tended to be significantly longer on average than those in central and southern Taiwan. CONCLUSIONS: This study demonstrates that wide variations in LOS exist among hospitals in Taiwan under the case-payment system. It is recommended that the Bureau of the National Health Insurance develop a national system to monitor certain hospitals that have an unusually short LOS.

Adolescent↗