Effects of the DRG-based prospective payment system operated by the voluntarily participating providers on the cesarean section rates in Korea

Interventions targeting healthcare providers to optimise use of caesarean section: a qualitative comparative analysis to identify important intervention features

BACKGROUND

Rapid increases in caesarean section (CS) rates have been observed globally; however, CS rates exceeding 15% at a population-level have limited benefits for women and babies. Many interventions targeting healthcare providers have been developed to optimise use of CS, typically aiming to improve and monitor clinical decision-making. However, interventions are often complex, and effectiveness is varied. Understanding intervention and implementation features that likely lead to optimised CS use is important to optimise benefits. The aim of this study was to identify important components that lead to successful interventions to optimise CS, focusing on interventions targeting healthcare providers.  METHODS: We used Qualitative Comparative Analysis (QCA) to identify if certain combination of important intervention features (e.g. type of intervention, contextual characteristics, and how the intervention was delivered) are associated with a successful intervention as reflected in a reduction of CS. We included 21 intervention studies targeting healthcare providers to reduce CS, comprising of 34 papers reporting on these interventions. To develop potential theories driving intervention success, we used existing published qualitative evidence syntheses on healthcare providers' perspectives and experiences of interventions targeted at them to reduce CS.

RESULTS

We identified five important components that trigger successful interventions targeting healthcare providers: 1) training to improve providers' knowledge and skills, 2) active dissemination of CS indications, 3) actionable recommendations, 4) multidisciplinary collaboration, and 5) providers' willingness to change. Importantly, when one or more of these components are absent, dictated nature of intervention, where providers are enforced to adhere to the intervention, is needed to prompt successful interventions. Unsuccessful interventions were characterised by the absence of these components.

CONCLUSION

We identified five important intervention components and combinations of intervention components which can lead to successful interventions targeting healthcare providers to optimise CS use. Health facility managers, researchers, and policy-makers aiming to improve providers' clinical decision making and reduce CS may consider including the identified components to optimise benefits.

Can case-based payment contain healthcare costs? - A curious case from China

We adopted a difference-in-difference (DID) design to evaluate the impact of a case-based payment pilot in Tianjin, China on hospital admission, utilization of varied therapeutic regimes, and the associated costs. We used claim data of all admissions of angina and acute myocardial infarction during July 2015 to June 2018, 18 months before and after the program. Our analyses were supported by convincing common trends tests and a couple of sensitivity analyses. As intended, for patients who received percutaneous coronary stenting (PCS) and were counted in the case-based payment system, we showed that the program decreased length-of-stay, per-admission spending, and out-of-pocket spending by 20.8%, 14.2%, and 95.5%, respectively, but did not increase readmissions. However, when considering all patients who suffered from the two types of coronary heart diseases, we found that the program otherwise increased per-admission spending by nearly 11%. As a result, the program took a perverse effect in increasing monthly spending for the health insurance scheme and the society by 1005.6 thousand USD (47·5%) and 1095·7 thousand USD (34·7%), respectively. Increases in hospital admissions, and proportion of performing PCS accounted for 66·7% and 39·2% of the rise, respectively. In addition, our analysis provided evidence of health providers' cream-skimming behaviors, including selecting younger patients with lower CCI in the case-based system, up-coding complications, and keeping higher cost patients in the fee-for-service payment system. We draw lessons that case-based payment may make an unintended impact that increases healthcare costs when incentives are not properly designed.

Changes in cesarean section rate before and after the end of the Korean Value Incentive Program

BACKGROUND

The Korean government implemented a value incentive program providing incentives to providers based on C-section rates, with the rates being publicized. The program ended in 2014 after the administration decided that the effects of the incentive program were limited. In this report, we analyzed changes in C-section rates with the value incentive program.

METHODS

The analysis used claim data from Korea's National Health Insurance. The study period (2011-2016) was divided into two phases: before and after the program. This study included 95 providers that were tertiary or general hospitals having more than 200 deliveries per year during the study period. The dependent variable was the risk-adjusted C-section rate. Independent variables included time and hospital characteristics such as hospital type, district, and ownership. Interrupted time series analysis was performed to analyze the data.

RESULTS

Our results showed that risk-adjusted C-section rates increased immediately after the end of the incentive program for C-sections. The immediate effect of intervention, a change of 1.73% (P < .05), was statistically significant, as was the trend after intervention, at 0.21% (P < .0001). The slope showed an increase after the intervention to 0.25% per medical institution, which was contrary to the trend of the preintervention decline (negative slope).

CONCLUSION

Risk-adjusted C-section rates increased immediately after the discontinuation of a value incentive program. Tertiary hospitals showed greater increases in C-section rates than general hospitals after the intervention.

Reducing unnecessary caesarean sections: scoping review of financial and regulatory interventions

Background

Caesarean sections (CS) are increasing worldwide. Financial incentives and related regulatory and legislative factors are important determinants of CS rates. This scoping review examines the evidence base of financial, regulatory and legislative interventions intended to reduce CS rates.

Methods

We searched MEDLINE, EMBASE, CINAHL and two trials registers in June 2019. Both experimental and observational intervention studies were eligible for inclusion. Primary outcome measures were: CS, spontaneous vaginal and instrumental birth rates. We assessed quality of evidence using Grading of Recommendations, Assessment, Development and Evaluation (GRADE) method.

Results

We identified 9057 articles and assessed 65 full-texts. We included 16 observational studies. Most of the studies were conducted in high-income countries.

Three studies assessed payment methods for health workers: equalising physician fees for vaginal and caesarean delivery reduced CS rates in one study; however, little or no difference in CS rates was found in the remaining two studies.

Nine studies assessed payment methods for health organisations:

There was no difference in CS rates between diagnosis-related group (DRG) payment system compared to fee-for-service system in one study. However, DRG system was associated with lower odds for CS in another study.

There was little or no difference in CS rates following implementation of global budget payment (GBP) system in two studies.

Vaginal birth after caesarean section (VBAC) increased after implementation of a case-based payment system in one study. Caesarean section increased while VBAC rates decreased following implementation of a cap-based payment system in another study.

Financial incentive for providers to promote vaginal delivery combined with free vaginal delivery policy was found to reduce CS rates in one study.

Studied regulatory and legislative interventions (comprising legislatively imposed practice guidelines for physicians in one study and multi-faceted strategy which included policies to control CS on maternal request in another study) were found to reduce CS rates.

The GRADE quality of evidence varied from very low to low.

Conclusions

Available evidence on the effects of financial and regulatory strategies intended to reduce unnecessary CS is inconclusive given inconsistency in effects and low quality of the available evidence. More rigorous studies are needed.

Effects of a mandatory DRG payment system in South Korea: Analysis of multi-year nationwide hospital claims data

Background

In 2002, a voluntary diagnosis-related groups (DRGs) payment system was introduced in South Korea for seven disease groups, and participation in the DRGs was mandated for all hospitals beginning in 2013. The primary aim of this study was to compare results reflective of patient care between voluntary participation hospitals (VPHs) and mandatory participation hospitals (MPHs) governed by either the DRGs or fee-for-service (FFS) payment system.

Methods

We collected DRGs and FFS inpatient records (n=3,038,006) from the Health Insurance Review and Assessment for the period of July 2011 to July 2014 and compared length-of-stay, total medical costs, shifting services to an outpatient setting, and readmission rates according to payment system, time of DRGs implementation, and hospital type. We analyzed the effects of mandatory introduction in DRGs payment system on results for patient care and used generalized estimating equations with difference-in-difference methodology.

Results

Most notably, patients at MPHs had significantly shorter LOS and lower readmission rates than VPH patients after mandatory introduction of the DRGs. Shifting services to an outpatient setting was similar between the groups.

Conclusions

Our findings suggest that the DRGs payment policy in Korea has decreased LOS and readmission rates. These findings support the continued implementation and enlargement of the DRGs payment system for other diseases in South Korea, given its potential for curbing unnecessary resource usage encouraged by FFS. If the Korean government deliberates on expansion of the DRGs to include other diseases with higher rates of complications, policymakers need to monitor deterioration of health care quality caused by fixed pricing.

Caesarean section in uninsured women in the USA: systematic review and meta-analysis

OBJECTIVE

The aim of this study is to assess the odds of caesarean section (CS) for uninsured women in the USA and understand the underlying mechanisms as well as consequences of lower use.

STUDY DESIGN

Systematic review and meta-analysis.

DATA SOURCES

PubMed, Embase, the Cochrane Library and CINAHL from the first year of records to April 2018.

ELIGIBILITY CRITERIA

We included studies that reported data to allow the calculation of ORs of CS of uninsured as compared with insured women.

OUTCOMES

The prespecified primary outcome was the adjusted OR of deliveries by CS of uninsured women as compared with privately or publicly insured women. The prespecified secondary outcome was the crude OR of deliveries by CS of uninsured women as compared with insured women.

RESULTS

12 articles describing 16 separate studies involving more than 8.8 million women were included in this study. We found: 0.70 times lower odds of CS in uninsured as compared with privately insured women (95% CI 0.63 to 0.78), with no relevant heterogeneity between studies (τ2=0.01); and 0.92 times lower odds for CS in uninsured as compared with publicly insured women (95% CI 0.80 to 1.07), with no relevant heterogeneity between studies (τ2=0.02). We found 0.70 times lower odds in uninsured as compared with privately and publicly insured women (95% CI 0.69 to 0.72).

CONCLUSIONS

CSs are less likely to be performed in uninsured women as compared with insured women. While the higher rates for CS among privately insured women can be explained with financial incentives associated with private insurance, the lower odds among uninsured women draw attention at barriers to access for delivery care. In many regions, the rates for uninsured women are above, close or below the benchmarks for appropriate CS rates and could imply both, underuse and overuse.

Non-clinical interventions for reducing unnecessary caesarean section

BACKGROUND

Caesarean section rates are increasing globally. The factors contributing to this increase are complex, and identifying interventions to address them is challenging. Non-clinical interventions are applied independently of a clinical encounter between a health provider and a patient. Such interventions may target women, health professionals or organisations. They address the determinants of caesarean births and could have a role in reducing unnecessary caesarean sections. This review was first published in 2011. This review update will inform a new WHO guideline, and the scope of the update was informed by WHO's Guideline Development Group for this guideline.

OBJECTIVES

To evaluate the effectiveness and safety of non-clinical interventions intended to reduce unnecessary caesarean section.

SEARCH METHODS

We searched CENTRAL, MEDLINE, Embase, CINAHL and two trials registers in March 2018. We also searched websites of relevant organisations and reference lists of related reviews.

SELECTION CRITERIA

Randomised trials, non-randomised trials, controlled before-after studies, interrupted time series studies and repeated measures studies were eligible for inclusion. The primary outcome measures were: caesarean section, spontaneous vaginal birth and instrumental birth.

DATA COLLECTION AND ANALYSIS

We followed standard methodological procedures recommended by Cochrane. We narratively described results of individual studies (drawing summarised evidence from single studies assessing distinct interventions).

MAIN RESULTS

We included 29 studies in this review (19 randomised trials, 1 controlled before-after study and 9 interrupted time series studies). Most of the studies (20 studies) were conducted in high-income countries and none took place in low-income countries. The studies enrolled a mixed population of pregnant women, including nulliparous women, multiparous women, women with a fear of childbirth, women with high levels of anxiety and women having undergone a previous caesarean section.Overall, we found low-, moderate- or high-certainty evidence that the following interventions have a beneficial effect on at least one primary outcome measure and no moderate- or high-certainty evidence of adverse effects.Interventions targeted at women or familiesChildbirth training workshops for mothers alone may reduce caesarean section (risk ratio (RR) 0.55, 95% confidence interval (CI) 0.33 to 0.89) and may increase spontaneous vaginal birth (RR 2.25, 95% CI 1.16 to 4.36). Childbirth training workshops for couples may reduce caesarean section (RR 0.59, 95% CI 0.37 to 0.94) and may increase spontaneous vaginal birth (RR 2.13, 95% CI 1.09 to 4.16). We judged this one study with 60 participants to have low-certainty evidence for the outcomes above.Nurse-led applied relaxation training programmes (RR 0.22, 95% CI 0.11 to 0.43; 104 participants, low-certainty evidence) and psychosocial couple-based prevention programmes (RR 0.53, 95% CI 0.32 to 0.90; 147 participants, low-certainty evidence) may reduce caesarean section. Psychoeducation may increase spontaneous vaginal birth (RR 1.33, 95% CI 1.11 to 1.61; 371 participants, low-certainty evidence). The control group received routine maternity care in all studies.There were insufficient data on the effect of the four interventions on maternal and neonatal mortality or morbidity.Interventions targeted at healthcare professionalsImplementation of clinical practice guidelines combined with mandatory second opinion for caesarean section indication slightly reduces the risk of overall caesarean section (mean difference in rate change -1.9%, 95% CI -3.8 to -0.1; 149,223 participants). Implementation of clinical practice guidelines combined with audit and feedback also slightly reduces the risk of caesarean section (risk difference (RD) -1.8%, 95% CI -3.8 to -0.2; 105,351 participants). Physician education by local opinion leader (obstetrician-gynaecologist) reduced the risk of elective caesarean section to 53.7% from 66.8% (opinion leader education: 53.7%, 95% CI 46.5 to 61.0%; control: 66.8%, 95% CI 61.7 to 72.0%; 2496 participants). Healthcare professionals in the control groups received routine care in the studies. There was little or no difference in maternal and neonatal mortality or morbidity between study groups. We judged the certainty of evidence to be high.Interventions targeted at healthcare organisations or facilitiesCollaborative midwifery-labourist care (in which the obstetrician provides in-house labour and delivery coverage, 24 hours a day, without competing clinical duties), versus a private practice model of care, may reduce the primary caesarean section rate. In one interrupted time series study, the caesarean section rate decreased by 7% in the year after the intervention, and by 1.7% per year thereafter (1722 participants); the vaginal birth rate after caesarean section increased from 13.3% before to 22.4% after the intervention (684 participants). Maternal and neonatal mortality were not reported. We judged the certainty of evidence to be low.We studied the following interventions, and they either made little or no difference to caesarean section rates or had uncertain effects.Moderate-certainty evidence suggests little or no difference in caesarean section rates between usual care and: antenatal education programmes for physiologic childbirth; antenatal education on natural childbirth preparation with training in breathing and relaxation techniques; computer-based decision aids; individualised prenatal education and support programmes (versus written information in pamphlet).Low-certainty evidence suggests little or no difference in caesarean section rates between usual care and: psychoeducation; pelvic floor muscle training exercises with telephone follow-up (versus pelvic floor muscle training without telephone follow-up); intensive group therapy (cognitive behavioural therapy and childbirth psychotherapy); education of public health nurses on childbirth classes; role play (versus standard education using lectures); interactive decision aids (versus educational brochures); labourist model of obstetric care (versus traditional model of obstetric care).We are very uncertain as to the effect of other interventions identified on caesarean section rates as the certainty of the evidence is very low.

AUTHORS' CONCLUSIONS

We evaluated a wide range of non-clinical interventions to reduce unnecessary caesarean section, mostly in high-income settings. Few interventions with moderate- or high-certainty evidence, mainly targeting healthcare professionals (implementation of guidelines combined with mandatory second opinion, implementation of guidelines combined with audit and feedback, physician education by local opinion leader) have been shown to safely reduce caesarean section rates. There are uncertainties in existing evidence related to very-low or low-certainty evidence, applicability of interventions and lack of studies, particularly around interventions targeted at women or families and healthcare organisations or facilities.

Pathways to DRG-based hospital payment systems in Japan, Korea, and Thailand

Countries in Asia are working towards achieving universal health coverage while ensuring improved quality of care. One element is controlling hospital costs through payment reforms. In this paper we review experiences in using Diagnosis Related Groups (DRG) based hospital payments in three Asian countries and ask if there is an "Asian way to DRGs". We focus first on technical issues and follow with a discussion of implementation challenges and policy questions. We reviewed the literature and worked as an expert team to investigate existing documentation from Japan, Republic of Korea, and Thailand. We reviewed the design of case-based payment systems, their experience with implementation, evidence about impact on service delivery, and lessons drawn for the Asian region. We found that countries must first establish adequate infrastructure, human resource capacity and information management systems. Capping of volumes and prices is sometimes essential along with a high degree of hospital autonomy. Rather than introduce a complete classification system in one stroke, these countries have phased in DRGs, in some cases with hospitals volunteering to participate as a first step (Korea), and in others using a blend of different units for hospital payment, including length of stay, and fee-for-service (Japan). Case-based payment systems are not a panacea. Their value is dependent on their design and implementation and the capacity of the health system.

Towards Actualizing the Value Potential of Korea Health Insurance Review and Assessment (HIRA) Data as a Resource for Health Research: Strengths, Limitations, Applications, and Strategies for Optimal Use of HIRA Data

Health Insurance and Review Assessment (HIRA) in South Korea, also called National Health Insurance (NHI) data, is a repository of claims data collected in the process of reimbursing healthcare providers. Under the universal coverage system, having fee-for-services covering all citizens in South Korea, HIRA contains comprehensive and rich information pertaining to healthcare services such as treatments, pharmaceuticals, procedures, and diagnoses for almost 50 million beneficiaries. This corpus of HIRA data, which constitutes a large repository of data in the healthcare sector, has enormous potential to create value in several ways: enhancing the efficiency of the healthcare delivery system without compromising quality of care; adding supporting evidence for a given intervention; and providing the information needed to prevent (or monitor) adverse events. In order to actualize this potential, HIRA data need to actively be utilized for research. Thus understanding this data would greatly enhance this potential. We introduce HIRA data as an important source for health research and provide guidelines for researchers who are currently utilizing HIRA, or interested in doing so, to answer their research questions. We present the characteristics and structure of HIRA data. We discuss strengths and limitations that should be considered in conducting research with HIRA data and suggest strategies for optimal utilization of HIRA data by reviewing published research using HIRA data.

Impact of payment system change from per-case to per-diem on high severity patient's length of stay

A new payment system, the diagnosis-related group (DRG) system, and Korean diagnosis procedure combination (KDPC, per-diem) payment system were officially introduced in 2002 and in 2012, respectively. We evaluated the impact of payment system change from per-case to per-diem on high severity patient's length of stay (LOS).Claim data was used. A total of 36,240 case admissions and 72,480 control admissions were included in the analysis. Segmented regression analysis of interrupted time series between cases and controls was conducted. Hospitals that consistently participated in the DRG payment system and changed to the KDPC payment system were defined as case hospitals. Hospitals that consistently participated in the DRG payment system were defined as control hospitals.LOS increased by 0.025 days per month (P = 0.0055) for 3 surgical diagnosis-related admissions due to the bundled payment system change. LOS among emergency admissions also increased and showed an increasing tendency under the KDPC. The LOS increase was observed specifically for complex procedure admissions and high severity cases (CCI 0, 1: 0.022, P = 0.0142; CCI 2, 3: 0.026, P = 0.0288; CCI ≥ 4: 0.055, P = 0.0003).Although both payment systems are optimized to decrease LOS, incentives to reduce LOS are stronger under the DRG system than under the KDPC system. It is worth noting that too strong incentive for reducing LOS is suitable to high severity cases.

Association of prediabetes, defined by fasting glucose, HbA1c only, or combined criteria, with the risk of cardiovascular disease in Koreans

BACKGROUND

The aim of the present study was to compare the association between cardiovascular diseases (CVD) and prediabetes defined by either fasting plasma glucose (FPG), HbA1c, or their combination in a Korean population.

METHODS

In all, 76 434 South Koreans who voluntarily underwent a general health examination in the Health Screening & Promotion Center (Asan Medical Center) were analyzed after excluding patients with a previous history of CVD. Cardiovascular events and death due to CVD during a median follow-up period of 3.1 years (interquartile range 1.9-4.3 years) were identified from the Nationwide Health Insurance Claims Database and death certificates using ICD-10 codes.

RESULTS

Age- and sex-adjusted hazard ratios (HRs) for overall CVD events were significantly greater for subjects with prediabetes defined by FPG only (HR 1.19; 95% confidence interval [CI] 1.08-1.31), HbA1c only (HR 1.28; 95% CI 1.16-1.42), and combined criteria (HR 1.20; 95% CI 1.09-1.32) compared with the normoglycemic group. After adjusting for multiple conventional risk factors (e.g. hypertension, low-density lipoprotein cholesterol, high-density lipoprotein cholesterol, smoking status, family history of CVD, and BMI), the HRs for overall CVD were significantly increased only for participants with prediabetes defined by HbA1c. Age- and sex-adjusted HRs for major ischemic heart disease events were significantly increased for subjects with prediabetes defined either by HbA1c or combined criteria. Similarly, age- and sex-adjusted HRs for percutaneous coronary intervention were significantly higher for subjects with prediabetes defined by HbA1c only. For diabetes, the multivariate-adjusted HRs for all outcomes were significantly increased by all three criteria.

CONCLUSIONS

Adding an HbA1c criterion when defining prediabetes in Koreans can help identify individuals with an increased risk of CVD.

Impact of a diagnosis-related group payment system on cesarean section in Korea

Cesarean sections (CSs) are the most expensive method of delivery, which may affect the physician's choice of treatment when providing health services to patients. We investigated the effects of the diagnosis-related group (DRG)-based payment system on CSs in Korea. We used National Health Insurance claim data from 2011 to 2014, which included 1,289,989 delivery cases at 674 hospitals. We used a generalized estimating equation model to evaluate the association between the likelihood of cesarean delivery and the length of the DRG adoption period. A total of 477,309 (37.0%) delivery cases were performed by CSs. We found that a longer DRG adoption period was associated with a lower odds ratio of CSs (odds ratio [OR]: 0.997, 95% CI: 0.996-0.998). In addition, a longer DRG adoption period was associated with a lower odds ratio for CSs in hospitals that had voluntarily adopted the DRG system. Similar results were also observed for urban hospitals, primiparas, and those under 28 years old and over 33 years old. Our results suggest that the change in the reimbursement system was associated with a low likelihood of CSs. The impact of DRG adoption on cesarean delivery can also be expected to increase with time, as our finding provides evidence that the reimbursement system is associated with the health provider's decision to provide health services for patients.

Cost-effectiveness of drug-eluting vs. bare-metal stents in patients with coronary artery disease from the Korean National Health Insurance Database

PURPOSE

The aim of this study was to evaluate the cost-effectiveness of the use of drug-eluting stents (DESs), as compared with bare-metal stents (BMSs) in Korea.

MATERIALS AND METHODS

A retrospective cohort study was conducted between January 2000 and December 2007. Subjects were stent-treated for the first time between 2004 and 2005, with four years of follow-up (2004-2007) (n=43674). The incremental cost-effectiveness ratio (ICER) was used to calculate the costs of DESs compared with BMSs among patients with coronary artery disease (CAD). Cost-effectiveness was assessed with effectiveness defined as a reduction in major adverse cardiac events after six months and after one, two, three, and four years.

RESULTS

The total costs of a DESs were 674108 Korean won (KRW) higher than that of a BMSs at the end of the follow-up; 13635 thousand KRW per patient treated with DESs and 12960 thousand KRW per patient treated with BMSs. The ICER was 256315 per KRW/death avoided and 293090 per KRW/re-stenting avoided among the CAD patients at the end of the follow-up.

CONCLUSION

The ICER for the high-risk patients was lower than that for the low-risk patients. The use of DESs is clinically more useful than the use of BMSs for CAD and myocardial infarction patients, especially for those considered to be high-risk patients in Korea.

Model for assessing cardiovascular risk in a Korean population

BACKGROUND

A model for predicting cardiovascular disease in Asian populations is limited.

METHODS AND RESULTS

In total, 57 393 consecutive asymptomatic Korean individuals aged 30 to 80 years without a prior history of cardiovascular disease who underwent a general health examination were enrolled. Subjects were randomly classified into the train (n=45 914) and validation (n=11 479) cohorts. Thirty-one possible risk factors were assessed. The cardiovascular event was a composite of cardiovascular death, myocardial infarction, and stroke. In the train cohort, the C-index (95% confidence interval) and Akaike Information Criterion were used to develop the best-fitting prediction model. In the validation cohort, the predicted versus the observed cardiovascular event rates were compared by the C-index and Nam and D'Agostino χ(2) statistics. During a median follow-up period of 3.1 (interquartile range, 1.9-4.3) years, 458 subjects had 474 cardiovascular events. In the train cohort, the best-fitting model consisted of age, diabetes mellitus, hypertension, current smoking, family history of coronary heart disease, white blood cell, creatinine, glycohemoglobin, atrial fibrillation, blood pressure, and cholesterol (C-index =0.757 [0.726-0.788] and Akaike Information Criterion =7207). When this model was tested in the validation cohort, it performed well in terms of discrimination and calibration abilities (C-index=0.760 [0.693-0.828] and Nam and D'Agostino χ(2) statistic =0.001 for 3 years; C-index=0.782 [0.719-0.846] and Nam and D'Agostino χ(2) statistic=1.037 for 5 years).

CONCLUSIONS

A risk model based on traditional clinical and biomarkers has a feasible model performance in predicting cardiovascular events in an asymptomatic Korean population.

Non-clinical interventions for reducing unnecessary caesarean section

BACKGROUND

Caesarean section rates are steadily increasing globally. The factors contributing to these observed increases are complex. Non-clinical interventions, those applied independent of patient care in a clinical encounter, may have a role in reducing unnecessary caesarean sections.

OBJECTIVES

To evaluate the effectiveness and safety of non-clinical interventions for reducing unnecessary caesarean sections.

SEARCH STRATEGY

We searched the following electronic databases: the Cochrane Effective Practice and Organisation of Care (EPOC) Group Specialised Register (29 March 2010), the Cochrane Pregnancy and Childbirth Group Specialised Register (29 March 2010), the Cochrane Central Register of Controlled Trials (The Cochrane Library 2010, Issue 2); MEDLINE (1950 to March 2010); EMBASE (1947 to March 2010) and CINAHL (1982 to March 2010).

SELECTION CRITERIA

We included randomised controlled trials (RCTs), quasi-experimental studies, controlled clinical trials (CCTs), controlled before and after studies (CBAs) with at least two intervention and control sites, and interrupted time series analyses (ITS) where the intervention time was clearly defined and there were at least three data points before and three after the intervention. Studies evaluated non-clinical interventions to reduce unnecessary caesarean section rates. Participants included pregnant women and their families, healthcare providers who work with expectant mothers, communities and advocacy groups.

DATA COLLECTION AND ANALYSIS

Three review authors independently assessed the quality and abstracted data of all eligible studies using a standardised data extraction form, modified from the Cochrane EPOC checklists. We contacted study authors for additional information.

MAIN RESULTS

We included 16 studies in this review.Six studies specifically targeted pregnant women. Two RCTs were shown to be effective in reducing caesarean section rates: a nurse-led relaxation training programme for women with a fear or anxiety of childbirth and birth preparation sessions. However, both RCTs were small in size and targeted younger mothers with their first pregnancies. There is insufficient evidence that prenatal education and support programmes, computer patient decision-aids, decision-aid booklets and intensive group therapy are effective.Ten studies targeted health professionals. Three of these studies were effective in reducing caesarean section rates. A cluster-RCT of guideline implementation with mandatory second opinion resulted in a small, statistically significant reduction in total caesarean section rates (adjusted risk difference (RD) -1.9; 95% confidence interval (CI) -3.8 to -0.1); this reduction was predominately in intrapartum sections. An ITS study of mandatory second opinion and peer review feedback at department meetings found statistically significant results at 48 months for reducing repeat caesarean section rates (change in level was -6.4%; 95% CI -9.7% to -3.1% and change in slope -1.14%; 95% CI -1.9% to -0.3%) but not for total caesarean section rates. A cluster-RCT of guideline implementation with support from local opinion leaders increased the proportion of women with a previous caesarean section being offered a trial of labour (absolute difference 16.8%) and the number who had a vaginal birth (VBAC rates) (absolute difference 13.5%). The P values are, however, not reported due to unit of analysis errors. There was insufficient evidence that audit and feedback, training of public health nurses, insurance reform, external peer review and legislative changes are effective.

AUTHORS' CONCLUSIONS

Implementation of guidelines with mandatory second opinion can lead to a small reduction in caesarean section rates, predominately in intrapartum sections. Peer review, including pre-caesarean consultation, mandatory secondary opinion and postcaesarean surveillance can lead to a reduction in repeat caesarean section rates. Guidelines disseminated with endorsement and support from local opinion leaders may increase the proportion of women with previous caesarean sections being offered a trial of labour in certain settings. Nurse-led relaxation classes and birth preparation classes may reduce caesarean section rates in low-risk pregnancies.

Reforming the hospital service structure to improve efficiency: urban hospital specialization

The objective of this study is to explain the relationship between the case-mix specialization index and efficiency of inpatient hospital care services. Hospital specialization was measured using the information theory index constructed from diagnosis-related group numbers of hospitals in Seoul, Korea, in 2004. Hospital performance was measured by technical efficiency scores computed by data envelopment analysis for 2004. Multiple regression analysis models were applied to identify the internal and external factors that affected the extent of hospital specialization status as well as the efficiency of hospitals. The data envelopment analysis showed that input variables such as the number of beds, doctors and nurses were related to hospital efficiency. Hospitals had different levels of specialization in patient services, and more specialized hospitals were more likely to be efficient (odds ratio=25.95). Internal characteristics of providers had more significant effects on the extent of specialization than market conditions. These findings help to explain the relationship among hospitals, specialization, market conditions and provider performance. The study results related to the rearrangement of hospital services in a city. Further study including hospitals from other regions will increase the generalizability of results, and policy makers can use the information in making policy for the specialized hospital industry in Korea.