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K L Phua

Publications and source records attributed to K L Phua.

4 recordsLinked to original sources
PubMed2004

General and URTI-specific antibiotic prescription rates in a Malaysian primary care setting.

Antibiotic prescribing by primary care doctors has received renewed interest due to the continuing emergence of antibiotic resistance and the attendant cost to healthcare. We examined the antibiotic prescribing rate in relation to selected socio-demographic characteristics of the prescribers at the Seremban Health Clinic, a large public primary care clinic, designated for teaching, in the state of Negeri Sembilan, Malaysia. Data were obtained from: (1) retrospective review of prescriptions for the month of June 2002 and (2) a questionnaire survey of prescribers. A total of 10667 prescriptions were reviewed. The overall antibiotic prescribing rate was 15%; the rate (16%) was higher for the general Outpatient Department (OPD) than the 3% for the Maternal & Child Health Clinic (MCH). The antibiotic prescription rates for upper respiratory tract infection (URTI) were 26% and 16%, respectively, for the OPD and MCH. Half of all the antibiotic prescriptions were for URTI making prescribing for URTI an appropriate target for educational intervention. The URTI-specific antibiotic prescription rate did not correlate with the prescribers' intention to specialise, patient load, perceived patient's expectation for an antibiotic, or the score for knowledge of streptococcal tonsillitis. Prescribing behaviours and record-keeping practices requiring correction were identified.

Adult↗
PubMed1994

Using Medicaid claims data to evaluate a large physician fee increase.

OBJECTIVE: This study demonstrates the use of Medicaid claims data in order to evaluate a threefold fee increase in physician fees for deliveries ($265 to $795), which the Maryland Medicaid program implemented in 1986. DATA SOURCES AND STUDY SETTING: The study used Maryland Medicaid claims data for years of service 1985-1988, and was done at the Maryland Department of Health and Mental Hygiene with the help of a Robert Wood Johnson, Health Care Financing and Organization (HCFO) grant. STUDY DESIGN: Overall, our design is that of a pre-test, post-test with multiple observation points both before and after the fee increase. We measured participation in three ways, corresponding to three different units of analysis. With the county-quarter year as unit of analysis, we followed a panel of providers over 16 quarters for each county in the state to determine changes in the number of delivering providers. With the individual provider as the unit of analysis, we identified effects on their Medicaid caseload between years that may have been influenced by the fee increase. Finally, we looked at continuously enrolled Medicaid women who delivered to determine the effects of the fee increase on site and volume of prenatal care. DATA COLLECTION/EXTRACTION METHODS: Analytic files for each unit of analysis were compiled from previously extracted Medicaid claims files using standard statistical software packages. PRINCIPAL FINDINGS: Using techniques described, we were able to get an in-depth picture of overall responsiveness to the intervention. We found a moderate influence of the fee increase on overall participation, less than what we would have predicted. CONCLUSIONS: Administrative data can be used to construct efficient, yet sophisticated evaluations of major policy changes. Findings from our evaluation suggest a moderate effect of the fee increase on overall participation. However, raising fees to the level of private third party payers does not in itself guarantee equal access to private physician health care for Medicaid mothers.

Adolescent↗
PubMedDate not supplied

Do increases in payments for obstetrical deliveries affect prenatal care?

Raising fees is one of the primary means that State Medicaid Programs employ to maintain provider participation. While a number of studies have sought to quantify the extent to which this policy retains or attracts providers, few have looked at the impact of these incentives on patients. In this study, the authors used Medicaid claims data to examine changes in volume and site of prenatal care among women who delivered babies after the Maryland Medicaid Program raised physicians fees for deliveries 200 percent at the end of its 1986 fiscal year. Although the State's intent was to stabilize the pool of nonhospital providers who were willing to deliver Medicaid babies, it was also hoped that women would benefit through greater access to prenatal care, especially care rendered in a nonhospital setting. The authors' hypotheses were that (a) the fee increase for obstetrical deliveries would result in an increase in prenatal visits by women on Medicaid, and (b) the fee increase would lead to a shift in prenatal visits from hospital to community based providers. The data for Maryland's Medicaid claims for the fiscal years 1985 through 1987 were used. Comparisons were made in the average number of prenatal visits and the ratio of hospital to nonhospital prenatal visits before and after the fee increase. Data for continuously enrolled women who delivered in the last 4 months of each fiscal year were analyzed for between and within year differences using Student's t-test and ANOVA techniques. The findings indicate very little overall change in either the amount or location of prenatal care during the year after the large fee increase for deliveries.Though significant increases in the number of prenatal visits occurred for women who lived outside of Baltimore City, it is difficult to attribute these changes solely to the fee increase. Where an effect was observed, it appeared to be greatest in non urban areas of the State, probably because coordination of care by fewer Medicaid providers is more common in such areas.The findings do not support the hypotheses that raising fees for obstetrical deliveries uniformly increase community-based prenatal care. Instead, the findings suggest that tying fee increases for obstetrical deliveries to the amount of prenatal care provided for each patient may be the best way of increasing the commitment of Medicaid obstetrical providers to give their patients more comprehensive perinatal care.

Adult↗