2015年-世界发展银行全球_Improving_Coverage_and_Utilization_of_Maternal_and_Child_Health_Services_in_Lao_PDR___Impact_Evaluation_of_the_Community_Nutrition_Project_87页_3mb

报告摘要

Summary of the Impact Evaluation of the Community Nutrition Project (CNP) in Lao PDR

Core Content

The Community Nutrition Project (CNP), supported by the World Bank from 2009 to 2013, aimed to improve maternal and child health (MCH) services in Lao PDR, particularly in response to the 2007-08 global food crisis. The project implemented two demand-side interventions: a conditional cash transfer (CCT) and a community-based nutrition education program. It was the first World Bank project in Lao PDR to be fully managed by a Lao line ministry and was designed to scale up if it showed positive results.

Main Objectives

Improve coverage of essential MCH services.
Enhance mother and child caring practices.
Promote skilled birth attendance and institutional delivery.
Address nutritional deficiencies through behavioral change and social protection.

Key Findings

Limited overall effect: The CNP had little effect on the six formal project indicators, with only DPT3 vaccination showing a significant improvement.
Positive child-caring outcomes: The project improved child-caring practices such as:
- Vaccination card possession (increased by over 36 percentage points).
- Breastfeeding within three hours of birth (increased by 6–14 percentage points).
- Seeking treatment for diarrhea.
Social protection role: The CNP served as a social protection mechanism for households affected by price increase shocks, with beneficiaries in intervention areas more likely to access care.
Pro-poor impact: The bottom 40% of the population benefited significantly from the CNP, especially in antenatal care and growth checkups.
Skilled birth attendance: Despite previous evidence suggesting CCTs improve skilled birth attendance, the CNP did not show significant improvements in institutional delivery or health center delivery in the full sample. However, it did improve skilled birth attendance among the poorest and least educated.

Methodology

The evaluation used difference-in-differences (DiD) and matched DiD methods to assess the causal impact of the CNP.
It compared treatment areas (intervention) with comparison areas (non-intervention) to isolate the project's effect.
Statistical power, survey consistency, and identification strategies were crucial for the evaluation's credibility.

Evaluation Implications

Single pre-post comparisons are misleading: They may not accurately reflect the project's effectiveness without a proper counterfactual.
Careful planning is essential: Impact evaluations require rigorous design, consistent data collection, and stratified sampling for meaningful results.
Selection criteria must be explicit: Transparency in targeting reduces opportunities for favoritism and corruption, and increases evaluability.

Limitations and Future Research

Short project duration: The CNP lasted only 1.5 years, which may not have been enough to affect long-term anthropometric outcomes.
Non-random assignment: The lack of randomization may have introduced confounding variables, affecting the credibility of the results.
Inconsistent data collection: Changes in survey instruments across time waves reduced the comparability of data.
Supply-side factors: More research is needed to examine supply-side constraints and how they interact with demand-side interventions.

Conclusion

While the CNP had limited impact on its primary indicators, it demonstrated important nuances in improving child-caring practices and acting as a social protection measure for vulnerable populations. The project highlights the potential of demand-side interventions in addressing health inequities, especially for the poorest and least educated groups. It also underscores the importance of rigorous impact evaluation and the need for transparent targeting and robust data collection in future projects.

Key Information

Project Duration: 2009–2013
Intervention Type: Conditional cash transfer (CCT) and community-based nutrition education
Target Population: Mothers and children under two years old in central and southern provinces
Funding Sources: World Bank ($2 million), EU ($1.44 million)
Indicators: Antenatal care, institutional delivery, DPT3 vaccination, breastfeeding, growth checkups, and diarrhea treatment
Geographical Focus: 62 health center service areas in 7 out of 8 central and southern provinces
CCT Amount: Varies by distance, with a stronger incentive for delivery (KN 260,000–300,000)
User Fee Exemption: Beneficiaries were exempt from MCH service fees at public health centers
Baseline Data: Collected in 2006 and 2011–12 to assess changes over time
CNP Significance: First World Bank project in Lao PDR managed by a line ministry; first impact evaluation on CCT and skilled birth attendance in the country

Appendices Overview

Appendix A: List of paired health centers
Appendix B: Data collection sampling framework
Appendix C: Principal component analysis
Appendix D: Definition of covariates
Appendix E: Parallel trending at the pretreatment period
Appendix F: Propensity score matching
Appendix G: Baseline balance check
Appendix H: Heckman selection model
Appendix I: Heterogeneity analysis (subgroup analysis)

Boxes and Figures

Box 5.1: Drivers of changes in comparison areas
Figure 2.1: Active project components by time
Figure 3.1: Location of public health centers and associated villages

Tables Overview

Table 2.1: CCT incentive structure
Table 3.1: Project development objective indicators
Table 5.1–5.9: Results on various health and nutrition indicators
Table 7.1: Nine assumptions of CCT interventions
Table 7.2: Reasons for not delivering in health facilities

Policy Context

Lao PDR has made progress in reducing poverty and improving health outcomes, but health inequities remain significant.
The bottom 40% of the population still faces high out-of-pocket expenditures for MCH services.
The CNP was designed to increase access and reduce financial barriers for health service utilization, especially in rural and poor areas.

This evaluation provides valuable insights into the effectiveness of demand-side interventions in MCH and highlights the importance of rigorous evaluation methods and policy transparency in development projects.

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