practical uses of health equity in disease control naman shah, march 26, 2011 sujal parikh memorial...
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Practical Uses of Health Equity in Disease Control
Naman Shah, March 26, 2011Sujal Parikh Memorial Symposium
Why this topic? Equity and social justice as the basis of public health
“The raison d'être [reason for being] of public health is social justice.”
- William Foege
“To declare that social justice is the foundation of public health is to call upon and nurture that invincible human spirit that led so many of us to enter the field of public health in the first place: a spirit that has a compelling desire to make the world a better place.”
- Nancy Krieger
1/5 Relevance of equity to public health
Health disparities
• Positive social determinants of health (environment, education, etc) concentrated in upper socioeconomic groups
• In developing and developed countries: Greater access to and awareness of health
services in better-off socioeconomic groups Distribution of public goods tend to benefit
the better-off (e.g. vaccines, bed nets, drugs)
Mortality of children under 5 per 1000 live births by level of household wealth in five countries, 1998-2004
WHO commission on macroeconomics and health 2008
• The poor, or those who may need the intervention the most, may not receive it
• Disparity itself, independent of the absence of the intervention, leads to deprivation
• Direct additional effects on health from deprivation for everyone
Inequity and deprivation
2/5 Defining health equity
Inequality versus inequity
• Inequality Difference in health outcomes between
groups of people
• Inequity Inequality that in addition is considered
unfair/ unjust and avoidable
Horizontal versus vertical equity
• Horizontal Equal treatment of equals Everyone benefits, what we usually think of E.g. Free access to vaccine for all children
• Vertical Unequal, but fair, treatment of unequals Positive discrimination E.g. Free access to vaccine for poor children
Relative versus AbsoluteEquity versus Efficiency
Relative improvement(Equity)
+ —
Absolute improvement
(Efficiency)
+ BestOften happens
—
Not pursued deliberately
Worst
National average and relative gap in DPT3 coverage among children aged 12–23
months for selected countries
Source: Delamonica et al. 2005
3/5 Measuring health equity
Choosing the group(s) of interestfor measuring equity
E.g. For immunization:• Interest in physical access to the service
Wealth Geography Urban/rural
• Interest in vulnerable populations Wealth Gender Ethnicity Occupation
Measuring equity in different stages of the logic model
• Input Funding allocation by group (Is the planning
equitable?)
• Process Qualitative, not commonly evaluated
• Output Vaccination coverage by group (Is the
program equitable?)
• Outcome Disease incidence/outbreaks by group (Is the
result equitable?)
Full immunization coverage among children 12-23 months in Indonesia and Philippines,
1991-98
Country Year
Coverage by wealth quintile
Total
Ratio(q5/q1)1 2 3 4 5
Indonesia 1991 39 47 55 67 77 56 2.0
1997 52 58 63 68 82 64 1.6
Philippines
1993 70 80 84 86 88 80 1.2
1998 58 68 75 79 82 70 1.4Opposite trend in relative equity of immunization coverage between the two countries clearly indicated by the ratio
Delamonica et al 2005
Concentration curve of full immunization coverage, rural and urban India, 1992-9
• The dashed line indicates perfect equality
• Equity of immunization by socioeconomic group higher in urban India
• Equity in urban India improved between the surveys
Gaudin et al 2006
4/5 Improving program strategy with equity
Strategies to improve equity in program design
• Targeting* Deliberately reaching certain populations
• Participatory approaches* Community involvement in designing,
implementing, and monitoring the program
• Social protection once ill Insurance to prevent poverty from health care costs
• Distributional focus* Equity as a program principle and monitoring
indicator
*more relevant for immunization programs
Targeting (or not) interventions
• Targeted: identification of groups for receiving the intervention Select Screen Deliver to targets
• Universal: providing the intervention to the entire population Don’t select Don’t screen Deliver to everyone
Targeted versus universal coverage strategies
Targeted
Universal
Efficiency
Benefit to poor Direct Delayed
Ease of operation
Less More
Sustainability
Fiscal expense Lower Higher
Political appeal Narrow Broad
No criteria used to target is perfect: Coverage and leakage vary
• Individual factors E.g. wealth Direct to intended recipients Operationally difficult, most direct
• Generic factors E.g. geography Groups in which intended recipients concentrate Operationally easier, less direct
• By disease E.g. rabies Diseases which mostly affect intended recipients Operationally easier, less direct
Strategies can complement and form different stages of a long-term
process
Evolution of hepatitis B vaccination in China : Inequity > Pro-poor > Universal coverage
Dates Description of eventsSurveyYear
Coverage by region
Eastern CentralWestern E/W
1992 - 2002
Charges for vaccine and user fee for immunization
1999 91.3 74.6 47.0 1.9
2002 - 2005
GAVI project in center and west - vaccine made free, small user fee
2004 94.1 91.8 68.0 1.4
2005 - onUniversal coverage in EPI with free vaccine and no user fee
2006 97.5 97.8 91.0 1.1
Data from Cui F et al. Unpublished (Central and Western provinces are poorer than the
East)
DPT3/DPT1 coverage among children in India by different
approaches, 1979-87Approach Period Dose1 Dose3 3/1 %
Siblings of school children on school premises
1979 385 346 90
Health facility under 5 clinics 1980-83
2423 1436 59
Community based under 5 clinics
1983 563 502 89
Door to door with community leaders
1981-83
2760 2277 83
Door to door without community participation
1984-86
3085 2066 67
Door to door with school children participation
1987 625 534 85
Kowli et al. 1990More children and better follow-up with participatory approaches
Limitations of participation
• Naïve application of “participation,” “social capital,” and “empowerment” is endemic
• Can raise undue expectations• Participation is not a goal in itself but a
means • Participation should have a clear
purpose• Applying a standard participation
strategy is not necessarily worthwhile
Focus on equity
• State equity as a guiding principle / goal
• Require equity as a monitoring indicator
Need for improved focus: Explicit use of equity in immunization among global
agencies
AgencyStated goal or
principle
In monitoring
or evaluation
GAVI Yes No
UNICEF/WHO
Yes No
US CDC No No
World Bank No NoBased on informal survey of websites and strategic plans, 6/2010
5/5 Uses with immunization
Immunization as a broader health service indicator: Possible with equity criteria
• System failure Measure never immunized
• System quality Measure DPT3 coverage or DPT3 - DPT1
gap • Marker for primary health system
Never immunized by wealth and gender among children in rural/urban India,
1992-99
Gaudin et al. 2006
Less overall failure and rural/urban gapBut still higher for rural, poor, and for females
Are vertical programs more inequitable? Not always!
• Given low baseline coverage Equity improves with gains in coverage
• Eg. supplementary immunization activities (mass campaigns) Might not be regular/sustainable But better coverage among rich and poor And better equity than routine activities
Routine and SIA measles coverage and equity among children 9–23 months, Kenya, 2002
Vijayaraghavan et al. 2007White=routine, black=SIASIA outperforms in coverage and equity
Take home points
1. Inequity is inequality that is unjust/unfair and remediable
2. Equity is a prime concern in public health3. Measure equity 4. Evaluate equity to guide program
strategy and assessment
A talisman for equity
"Whenever you are in doubt, or when the self becomes too much with you, apply the following test. Recall the face of the poorest and the weakest person whom you may have seen, and ask yourself, if the step you contemplate is going to be of any use to them. Will they gain anything by it? Will it restore them to a control over their own life and destiny? In other words, will it lead to swaraj [freedom] for the hungry and spiritually starving millions?
Then you will find your doubts and your self melt away."
- Mahatma Gandhi
Acknowledgements
• Sujal Parikh• WHO China EPI Team
Yvan Hutin Zuo Shuyan An Zhijie Lisa Cairns
Resources
• WHO Equity and Health Systems • International Society for Equity in
Health• EQUIDAD - PAHO equity email list• Annotated bibliography on equity in
health• WHO guide for mid-level immunization
managers to improve participation