Holes in the safety net? Assessing the effects of targeted benefits upon the health care utilization of poor New Zealanders

Effectiveness of a group B outer membrane vesicle meningococcal vaccine against gonorrhoea in New Zealand: a retrospective case-control study

BACKGROUND

Gonorrhoea is a major global public health problem that is exacerbated by drug resistance. Effective vaccine development has been unsuccessful, but surveillance data suggest that outer membrane vesicle meningococcal group B vaccines affect the incidence of gonorrhoea. We assessed vaccine effectiveness of the outer membrane vesicle meningococcal B vaccine (MeNZB) against gonorrhoea in young adults aged 15-30 years in New Zealand.

METHODS

We did a retrospective case-control study of patients at sexual health clinics aged 15-30 years who were born between Jan 1, 1984, and Dec 31, 1998, eligible to receive MeNZB, and diagnosed with gonorrhoea or chlamydia, or both. Demographic data, sexual health clinic data, and National Immunisation Register data were linked via patients' unique personal identifier. For primary analysis, cases were confirmed by laboratory isolation or detection of Neisseria gonorrhoeae only from a clinical specimen, and controls were individuals with a positive chlamydia test only. We estimated odds ratios (ORs) comparing disease outcomes in vaccinated versus unvaccinated participants via multivariable logistic regression. Vaccine effectiveness was calculated as 100×(1-OR).

FINDINGS

11 of 24 clinics nationally provided records. There were 14 730 cases and controls for analyses: 1241 incidences of gonorrhoea, 12 487 incidences of chlamydia, and 1002 incidences of co-infection. Vaccinated individuals were significantly less likely to be cases than controls (511 [41%] vs 6424 [51%]; adjusted OR 0·69 [95% CI 0·61-0·79]; p<0·0001). Estimate vaccine effectiveness of MeNZB against gonorrhoea after adjustment for ethnicity, deprivation, geographical area, and sex was 31% (95% CI 21-39).

INTERPRETATION

Exposure to MeNZB was associated with reduced rates of gonorrhoea diagnosis, the first time a vaccine has shown any protection against gonorrhoea. These results provide a proof of principle that can inform prospective vaccine development not only for gonorrhoea but also for meningococcal vaccines.

FUNDING

GSK Vaccines.

Factors associated with the frequency of physician visits among North Korean defectors residing in South Korea: a cross-sectional study

BACKGROUND

Since the mid-1990s, a growing number of North Korean defectors have been arriving in South Korea, many of whom have various somatic and mental disorders. The health status of defectors is an important predictor of their successful resettlement. Therefore, this study examined the frequency of physician visits among North Korean defectors residing in South Korea, as well as the factors associated with this frequency.

METHODS

The data used in this study were collected through survey questionnaires and interviews conducted from April 6 to May 20, 2009, and involving 500 North Korean defectors who entered South Korea in 2007. This study used three domains of independent variables: 'health-related factors,' 'special characteristics of North Korean defectors,' and 'demographic and socio-economic factors'. Nested multivariable linear regression analysis was conducted in order to determine the factors related to the frequency of physician visits between January 1 and December 31, 2008.

RESULTS

The average number of physician visits made by the participants during 2008 was 15.3; 14.5% of participants did not have physician visits. The number of physician visits was largely associated with health-related variables including disability, chronic disease and self-rated health status. The frequency of physician visits was higher among those with a disability, chronic disease, lower self-rated health score, a greater number of traumatic experiences during their escape, lower annual family income, and among females.

CONCLUSIONS

This study confirmed that the number of defectors' physician visits was related with objective and subjective health status, traumatic experiences during their migration, economic, and demographic variables. The results serve useful understanding of medical utilization characteristics among North Korean defectors in South Korea.

Making the invisible visible: are health social workers addressing the social determinants of health?

This study explored the ways in which health social workers (HSW) address the social determinants of health (SDH) within their social work practice. Social workers (n = 54) employed at major hospitals across Toronto had many years of practice in health care (M = 11 years; SD = 10.32) and indicated that SDH were a top priority in their daily work; with 98% intentionally intervening with at least one and 91% attending to three or more. Health care services were most often addressed (92%), followed by housing (72%), disability (79%), income (72%), and employment security (70%). Few HSW were tackling racism, Aboriginal status, gender, or social exclusion in their daily practice.

Geographical inequalities in health in New Zealand, 1980-2001: the gap widens

OBJECTIVE

To monitor geographical inequalities in health in New Zealand during the period 1980 to 2001, a time of rapid social and economic change in society.

METHODS

Age-standardised mortality rates were calculated using mortality records aggregated to a consistent set of geographical areas (the 2001 District Health Boards) for the periods 1980-82, 1985-87, 1990-92, 1995-97 and 1999-2001. In addition, the Relative Index of Inequality (RII) was calculated for each period to provide a robust measure of mortality rates over time.

RESULTS

Although overall mortality rates have declined through the period 1980 to 2001, the reduction has not been consistent for all areas of New Zealand. Indeed for a small number of DHBs, mortality rates have increased slightly. There has been an increase in the geographical inequalities in health as measured by the RII between each time period except for between 1986 and 1991, where there was a small reduction.

CONCLUSIONS

At the start of the 21st century, geographical inequalities in health in New Zealand have reached very high levels and continue to increase. The excess mortality for the worst areas in New Zealand increased from 15% in 1981 to 25% in 2000. If policy makers are committed to reducing health inequalities then more redistributive economic policies are required.

Are socially disadvantaged neighbourhoods deprived of health-related community resources?

BACKGROUND

Recent work in a number of countries has identified growing geographical inequalities in health between deprived and non-deprived neighbourhoods. The health gaps observed cannot be entirely explained by differences in the characteristics of individuals living in those neighbourhoods, which has led to a concerted international public health research effort to determine what contextual features of neighbourhoods matter. This article reports on access to potentially health-promoting community resources across all neighbourhoods in New Zealand. Prevailing international opinion is that access to community resources is worse in deprived neighbourhoods.

METHODS

Geographical Information Systems were used to calculate geographical access to 16 types of community resources (including recreational amenities, and shopping, educational and health facilities) in 38,350 small census areas across the country. The distribution of these access measures by neighbourhood socioeconomic deprivation was determined.

RESULTS

For 15 out of 16 measures of community resources, access was clearly better in more deprived neighbourhoods. For example, the travel time to large supermarkets was approximately 80% greater in the least deprived quintile of neighbourhoods compared with the most deprived quintile.

CONCLUSIONS

These results challenge the widely held, but largely untested, view that areas of high social disadvantage have poorer access to community resources. Poor locational access to community resources among deprived neighbourhoods in New Zealand does not appear to be an explanation of poorer health in these neighbourhoods. If anything, a pro-equity distribution of community resources may be preventing even wider disparities in neighbourhood inequalities in health.

Exploring the 'fit' between people and providers: refugee health needs and health care services in Mt Roskill, Auckland, New Zealand

The needs of refugees and the struggles on the part of service providers to address this diverse population have received limited attention within the academic literature. This paper profiles Hauora o Puketapapa/Roskill Union and Community Health Centre (HoP), which is a non-profit, community owned and operated health clinic designed to deliver accessible, affordable and appropriate primary health care services to low-income groups in the Mt Roskill area of Auckland, New Zealand. The clinic's locality has undergone considerable demographic change over recent years with the arrival of refugees from diverse backgrounds. This situation has resulted in new sets of health needs and expectations which need to be addressed. The study took place in 2002-2003 and employed qualitative methods. In-depth interviews with community representatives, clinic users and health service staff members revealed that refugees face considerable barriers in accessing and utilising health services. Similarly, we found that health practitioners face the daunting task of endeavouring to meet these needs in an effective and culturally appropriate manner within a limited funding environment. We conclude that, despite these challenges, HoP has successfully established itself as a well-regarded place of primary health care. In so doing, it has strengthened the capacity of the local community to respond to the changing policy environment. However, long-term sustainability issues remain unless resourcing issues are adequately addressed.

Reducing health disparities through primary care reform: the New Zealand experiment

New Zealand experiences significant health disparities related to both ethnicity and deprivation; the average life expectancy for Maori New Zealanders is 9 years less than for other New Zealanders. The government recently introduced a set of primary care reforms aimed at improving health and reducing disparities by reducing co-payments, moving from fee-for-service to capitation, promoting population health management and developing a not for profit infrastructure with community involvement to deliver primary care. Funding for primary care visits will increase by some 43% over 3 years. This paper reviews policy documents and enrollment and payment data for the first 15 months to assess the likely impact on health disparities. The policy has been successfully introduced; over half the New Zealand population (of four million) enrolled in new Primary Health Organizations within 15 months. Over 400,000 people (half of them in vulnerable groups) gained improved access to primary care subsidies in the first 15 months. The combined effect of new payment rules and the deprived nature of the minority populations was that the average per person payment to PHOs on behalf of Maori and Pacific enrollees was more than 70% greater than the per person amount for other ethnicities for the period. The policy is consistent with the principles of the Alma Alta Declaration. Barriers to successful implementation include the risk of middle class capture of the additional funding; the risk that co-payments are not low enough to improve access for the poor; PHO inexperience; and the small size of many PHOs. Transitional equity and efficiency issues with the use of aggregate population characteristics to target higher subsidies are being ameliorated by the introduction of low cost access based on age. A tension between the twin policy goals of low cost access for all, and very low cost access for the most vulnerable populations is identified as a continuing and unresolved policy issue.

Urban deprivation and public hospital admissions in Christchurch, New Zealand, 1990-1997

The present paper examines the relationship between deprivation and changing patterns of public hospital admissions in Christchurch, New Zealand, between 1992 and 1997, during a time of economic restructuring and rapid change in the health sector. The total set of admissions into Christchurch Hospital was geocoded according to the meshblock domicile of each patient. Domiciles were classified into 10 decile categories using the NZDep91 and NZDep96 measures of deprivation. Regression analysis was used to measure changes in the relationship between deprivation and different types of admissions. Differences between admission rates for people living in the most and least deprived areas increased over time, especially following the implementation of the 1993 health reforms. This was most marked for younger adults (ages = 25-44 years), day patients, and especially, acute day patients, ambulatory-care-sensitive admissions and re-admissions. The average length of stay also varied by deprivation and appeared to be an important cause of the increasingly high rate of re-admissions. On average, patients from more affluent areas are hospitalised longer than low-income patients, although the differences narrow over time. The results suggest that the widening social gap in hospitalisation rates is a result of the effects of poverty and problems of access to primary care. However, more research on different admission pathways and causes of admissions for different patients from different parts of the city is needed to confirm these observations.

Housing Policy, Poverty, and Culture: ‘Discounting’ Decisions among Pacific Peoples in Auckland, New Zealand

This paper explores the links between housing and other welfare policies, low income, and culture among Pacific peoples within Auckland, New Zealand. These migrant peoples occupy an ambiguous social space within Auckland: they represent the visible face of the world's largest Polynesian city, yet are occupants of some of the city's poorest and least health-promoting housing. Through considering the balance between choice and constraint, we examine how housing costs, poverty, and cultural practices converge to influence household expenditure decisions. Specifically, we are interested in the ways health-promoting behaviours (for example, obtaining fresh food) and utilising health care services are ‘discounted’ (that is, postponed or substituted with cheaper alternatives) because of costs associated with structural changes in housing and the broader policy context. We draw on narratives gathered from in-depth interviews conducted with seventeen Samoan and Cook Island families undertaken in the South Auckland suburb of Otara in mid-2000. Our findings illustrate a lack of ‘fit’ between state housing stock and its occupants. We conclude that, although a recent return to a policy of income-related rents may alleviate these conditions, further longitudinal and community-supported research is required to monitor whether health inequalities are in fact lessened through income-related interventions alone.

Coping with the costs of primary care? Household and locational variations in the survival strategies of the urban poor

This paper examines the 'survival' strategies adopted by lower income groups seeking to cope with the costs of primary care. Two surveys, one of the health and health service concerns of clients of an inner city voluntary welfare agency, and another of how 114 general practitioner (GP) surgeries in Christchurch, New Zealand aided patients in financial distress, were conducted in October-December, 1997. Patients adopted a variety of strategies, both active and passive, with delays in obtaining medications and seeking financial help from GPs being the most common. Although less important, high rates of switching GPs occurred. There was evidence of geographical variation in the strategies adopted by patients and practices as well as of the effects of such strategies given that considerable levels of unmet need remain. I conclude that more attention should be paid to the gatekeeper role of GPs and how their actions in different social contexts may result in inequalities in service provision to low income patients and outcomes of care.