design of an impact study to evaluate the scaling up of ... of an impact study to evaluate the...
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Design of an Impact Study to Evaluate the Scaling up of the WFP Voucher Scheme
Dr. Helen Guyatt, Head of Research
www.kimetrica.com
KIMETRICA presentation to WFP
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Develop a set of analytical tools:
To inform on the scale up of vouchers, and help
WFP determine the most effective mix between
GFD and vouchers, given available resourcing.
KIMETRICA presentation to WFP
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Research objective
To investigate how the scaling up of the
voucher scheme will affect the net distribution
of costs and benefits for:
• refugees
• traders
• host community
With particular emphasis on:
• vulnerable groups
• effects on markets (esp. prices)
• influence of exogenous factors (e.g.
food cuts, security restrictions,
changes in camp population)
KIMETRICA presentation to WFP
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Roadmap
KIMETRICA presentation to WFP
• Stakeholder interviews
• Secondary data analysis
• Theory of Change (ToC) definition
• Model development
• Definition of key research questions
• Key indicator and variable identification
• Evaluation of WFP’s proposed M&E plan
• Design of data collection instruments
• Data analysis plan
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KIMETRICA presentation to WFP
Research Design Process
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Primary data analysis:
Stakeholder interviews
KIMETRICA presentation to WFP
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Stakeholder interviews
In Nairobi, Kakuma and Dadaab.
• Donors (Dfid, ECHO, USAID, Germany)
• FAO
• WFP officials
• Implementing Partners (World Vision,
CARE, NRC)
• UNHCR
• DRA
• County Government
• Traders in the camps
KIMETRICA presentation to WFP
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Key findings
• Benefits and risks may be unevenly distributed; voucher scheme may
marginalize vulnerable groups (e.g. HH size 1, new arrivals, HHs with no
phones, traders not in the camps or not in the scheme).
• Cereal component of the ration will affect resale behavior, demand and
prices for different cereal types in the market.
• Exogenous factors may influence costs, benefits and risks and should
be monitored (eg. ration cuts, security restrictions).
• Conflicts, particularly related to intra-HH decision-making, may increase.
• Commodity prices can change with season.
Kakuma and Dadaab are very different and should be considered separately
KIMETRICA presentation to WFP
Need to
monitor
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Main differences between Kakuma and Dadaab
Kakuma Dadaab
Culturally Multi-cultural Mostly Somali
Nutritional status Low Moderate
Markets Rely heavily on Kitale More developed
Transport and access Good road from Kitale Poor road from Garissa
Host community tensions High (resources) Low (business)
KIMETRICA presentation to WFP
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Secondary data analysis
KIMETRICA presentation to WFP
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Secondary data analysis
• Refugee demographic data
• Nutrition and health surveys
• Market monitoring
• Voucher documentation
• Cost data
• Other cash/voucher programmes
• Other activities in the camps
• Estimated elasticities of food items
KIMETRICA presentation to WFP
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UNHCR demographic data
Kakuma Dadaab
Total population 184,183 351,538
Number of HHs 54,836 83,277
HH size 1 31% na
Originating from Somalia 31% 95%
Arrivals (2014) 45,627 na
Departures (2014) 3,048 na
KIMETRICA presentation to WFP
By sub-camp: new arrivals, Country of Origin, HH size 1, female headed HH?
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• Food insecurity varies by camp and sub-
camp e.g. Kakuma >Dadaab, Ifo2 and
Kambioos.
• Food ration lasts < 11 days
• Phone access < in HHs with lower FCS
(38% phones in Kambioos)
• Price of minimum healthy food basket
(2013) higher in Kakuma
KIMETRICA presentation to WFP
Annual nutrition surveys, FSOM and HIS
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Market monitoring : retail prices
Missing: Fish, potatoes, pasta, sukuma, eggs? Wholesale prices? Suppliers?
May 2014 Sep 2014 Dec 2014
Rice 93 (78-120) [7] 95 (79-199) [5] 109 (100-119) [3]
Dry beans 81 (70-95) [7] 76 (38-98) [5] 78 (70-84) [3]
Goat meat 361 (220-400) [6] 398 (390-400) [4] 484 (480-488) [2]
Goat milk 67 (59-80) [4] 65 (60-70) [2] 75 (-) [1]
Tomato 110 (96-123) [6] 104 (48-138) [4] 99 (78,120) [2]
Bananas 102 (60-170) [5] 67 (20-120) [4] 88 (46,130) [2]
KIMETRICA presentation to WFP
Vary by camp, sub-camp and season for meat and milk
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Voucher programme documentation
Market assessments, FFV evaluation and FGDs
• 30% phone ownership in Kakuma 4
• Higher prices charged to FFV customers
• Host community shop in the camps
• Prices and availability seasonal
• Can traders meet increased cereal demand?
KIMETRICA presentation to WFP
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Cost data
• WFP costs are aggregated into composite unit
prices which include purchase, transport and
overheads
• Prices for each commodity in each camp is
assumed to be the same
• Unit prices are all expressed per metric tonne
distributed: this is a problem for some
resources (e.g. staff at FDP)
KIMETRICA presentation to WFP
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Other cash/voucher experiences in refugee camps
Somalia, Sudan, Burundi and Rwanda
• Traders need to be regularly monitored
• Markets suffer if a break in the voucher pipeline occurs
• Explore reductions in HH debt
• Reduce mobile phone loss by insisting on police reports
• Relative impacts on nutrition depend on baseline values
KIMETRICA presentation to WFP
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Other activities/surveys in the camps
Activity Details Will affect
WFP supplementary feeding MCHN, food4assets HH food security
UNHCR NFI targeting Female headed HH HH SE
HSNP2 cash targeting 40,000 HHs Turkana HH SE host community
FAO-Mastercard charcoal 8,000 refugees Kakuma HH income
NDMA Livelihood surveys Supplementary data
World Bank SE survey Supplementary data
KIMETRICA presentation to WFP
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Estimating elasticities for food supply and demand
To calibrate the model : farm gate, retail and wholesale levels
For retail demand elasticities, budget
share can be specified as:
KIMETRICA presentation to WFP
Si =ai + bi lnM
P*
æ
èç
ö
ø÷+ g ij
j=1
n
å lnPj +ei
Where:
Si is the i th budget share estimated as
Si = PjXj/M
Pj are nominal retail prices
Xj are quantities
γij are price coefficients
M is the total expenditure on all goods
P* is an aggregate price index
FSOM HH expenditure not disaggregated
into quantities and unit price
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Implications for the study design
HH survey : Expenditure on all relevant
commodities, disaggregated into quantity and unit
cost alongside HH demographic data
Market/trader survey : Prices on all relevant
commodities from all markets and sub-camps
Producer/farmer survey or secondary data : farm
prices, acreage, output and input prices (e.g.
labour)
KIMETRICA presentation to WFP
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Theory of change
Achieving impacts through outcomes and outputs
KIMETRICA presentation to WFP
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KIMETRICA presentation to WFP
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Assumptions
Refugees benefit if:
• Refugees can access and use vouchers
• Traders supply food demanded at acceptable quality and price
• Refugees purchase some non-GFD commodities with voucher
KIMETRICA presentation to WFP
Traders benefit if:
• Refugees use markets as above (a risk that some traders may lose business)
• Traders can access MPESA agents and are not targeted by thieves
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Major risk: Prices may increase
• As a result of limited supply or exogenous
factors
• Resulting in negative effects on HHs and
markets
• Potentially causing increased tension and
conflicts
KIMETRICA presentation to WFP
• For porters and temporary staff at the FDPs
• Adversely affecting HH incomes for these
specific groups
Minor risk: Diminished employment opp.
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Exogenous factors
• Food rations: Cuts and composition may affect HH spending behavior
• Insecurity: Curfews affect trading hours and transport costs, the closing
of the Somali border has increased prices, and the discontinuation of
money transferring modalities has affected remittances
• Other programmes: Receipt of other food, NFIs or cash aid should be
recorded
• Other: Weather conditions, wider market conditions
KIMETRICA presentation to WFP
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Model development
KIMETRICA presentation to WFP
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Cost and benefit trade-offs
Reduced GFD Increased Vouchers Net Benefit
Refugees GFD volume Unit price
Income Prices for all items
Probable net gain
Host consumers GFD commodity prices
Non-GFD commodity prices
Net loss
Traders GFD resale volume Non-GFD commodity sales
Probable net gain
Local producers Improved market for GFD commodities
Improved market for non-GFD commodities
Net gain
KIMETRICA presentation to WFP
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KIMETRICA presentation to WFP
Anticipated changes
for GFD commodities
Increase in prices (P2)
Net shift in supply curve (S2)
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KIMETRICA presentation to WFP
Anticipated changes for
non - GFD commodities
Increased income shifts
demand (D2)
ST: supply fixed, and prices
increase (P2)
LT: quantity increases (Q2),
and prices stabilize (P3)
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KIMETRICA presentation to WFP
General equilibrium model
Markets (c): all sub-camps, “host community” rep,
“outside” rep.
Commodities (i): set of agricultural commodities
(e.g. maize, meat, fish etc.), transport service and
“other good”
Household types (h): in sub-camps differentiated
by eg. income, labor type, ethnic group
Production factors (f): e.g. labor, capital, land
Static model : calibrated to monthly or seasonal
data
One model for each camp: calibrated with camp-
specific data
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Model objective
Compute price responses to
voucher injection and compare
with in-kind GFD
KIMETRICA presentation to WFP
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Consumption and prices
• Households: maximize their welfare subject to budget constraints
• Vouchers: modeled as imperfect substitutes to food commodities
• In-kind: modeled as additional local production, monetized using market
prices
KIMETRICA presentation to WFP
Production and transport
• Goods: assumed to be purchased from cheapest source
• Agricultural commodities: produced by combining labour with capital
and/or land
• Transport services: provided by traders using labour and capital
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Key research question
How will the voucher scheme
affect the net distribution of cost
and benefits as it scales up?
KIMETRICA presentation to WFP
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Distribution of costs and benefits: across all
groups (refugees, traders, host community)
and across income and voucher and food
market access strata
Impact on market growth: including up the
value chain to imported goods
Influence of exogenous factors
Risk of price increases: negatively affecting
refugees and host population
KIMETRICA presentation to WFP
Components of net distribution
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Gap Analysis
What are the key indicators?
KIMETRICA presentation to WFP
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KIMETRICA presentation to WFP
Research Design Process
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Indicator Measurement
HH food security Standard metrics (e.g. FCS, DD, daily food energy avail.)
HH consumption Patterns in markets and HHs
HH income Direct and indirect from HH expenditure
Trader income Direct and indirect from increased employment
Tensions & conflicts Police reports and intra-HH
Access to voucher Phone ownership, pipeline etc.
Access to food Prices & quality, resale of ration
Access to income No thefts, adequate supply chain
KIMETRICA presentation to WFP
Key indicator identification
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Variable/outcome Measurement
Exogenous factors Ration cuts, income losses, supply constraints
Costs Cash and opportunity costs, provider costs
Prices Commodities, price indexes and inflation
Supply Into camps and outlying host communities
Real income HH income deflated by price index
Welfare % change or monetized equivalent
KIMETRICA presentation to WFP
Key variable identification
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Can proposed WFP M&E provide this information?
Mystery shopping, trader feedback, FGDs ?
Tools Limitations
Beneficiary contact monitoring 20 per FDP
FSOM HH survey 139 HHs (Kakuma 1-3), HH size 1 = 2%
Voice monitoring telephone 150/month, but need a phone
FSOM market monitoring Missing items, wholesale prices and sub-camps
MVAM-SMS 500/week, but need a phone
KIMETRICA presentation to WFP
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Data collection and analysis
KIMETRICA presentation to WFP
1. HH survey
2. Trader survey
3. MM survey
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HH Survey
Section Details
Interview and HH details Sub-camp, HHH, CoO, arrival, relatives
Wealth indicators Housing, cooking, electricity, assets
HH roster HH profile, age, sex, schooling, other nutrition prog.
Food consumption Quantities and changes in demand with price
Expenditure Food, NFIs, capital
GFD collection Resale, duration, opp. costs
Voucher Purchasing behavior, opp. costs
Coping strategies/income CSI, income (work, gifts), debts
KIMETRICA presentation to WFP
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Proposed HH survey sampling
400 refugee HHs to be randomly sampled in
each sub-camp
1. UNHCR list of all HHs with location
2. Sampling grid over each sub-camp and
the start at center and move outwards
KIMETRICA presentation to WFP
Shortened HH survey: wealth and consumption in
a random sample of “host community” in the main
town (100) and in the next nearest town down the
supply chain (100).
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Trader Survey
Section Details
Trader details CoO, location, type of shop
Voucher experience Use and opportunity costs
Main food traded Demand and prices, suppliers
Employees Number, wages
Assets Transport and stores
KIMETRICA presentation to WFP
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Trader survey
400 traders randomly selected across the camps – from list?
50 traders from the main town outside the camps.
Concurrent with HH survey
Builds on FFV
KIMETRICA presentation to WFP
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Market monitoring
Every market in every sub-camp, main town,
and next market town. Conducted monthly.
• Retail and wholesale prices
• Comprehensive list of commodities incl.
eggs, fish, pasta and potatoes.
• Demand, availability and main suppliers
KIMETRICA presentation to WFP
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Cost data
Provider costs (WFP) : voucher versus in-kind
• Unit costs and quantities explicitly
• Itemized frameworks
• Set-up versus recurrent costs
• Fixed versus variable costs
• By activity: procurement, sensitization,
training, monitoring, distribution
• By resources: staff, capital, rental,
consumables etc.
KIMETRICA presentation to WFP
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Supporting data
• Triangulation with WFP M&E framework
• Triangulation with other secondary data sources
– e.g. KHIBS, the World Bank SE survey in Kakuma and the NDMA
• Systematic monitoring of conflicts using police reports
• KI with local producers: prices, inputs and outputs
• Qualitative data
– Regular FGDs with host community, refugees and traders every 6 months
– Security restrictions, adverse conditions affecting supply of commodities,
changes in the camp population and GFD composition and ration cuts
KIMETRICA presentation to WFP
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Data analysis plan
Combine programme cost data with model outcomes on percentage
change in welfare (or its monetized equivalent) for different HH types.
• Food security: FCS, DD, daily food energy availability per capita
• Welfare estimates : based on commodities consumed (quantities and values)
and HH income.
• Model benchmark values: consumption, production and transport
• Model response parameters eg. Elasticiity of substitution between goods
KIMETRICA presentation to WFP
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Develop a set of analytical tools:
To inform on the scale up of vouchers, and help
WFP determine the most effective mix between
GFD and vouchers, given available resourcing.
KIMETRICA presentation to WFP
Under what conditions (e.g. critical price level) should vouchers be scaled back?