Post on 11-Dec-2015
High food security
Marginal food security
Low food security
Worry, stretch, juggle
Reduce quality and variety of diet
Reduce food intake (adults)
Reduce food intake of children
Very low food security
Measuring Household Food Security
“The food that we bought just didn’t last, and we didn’t have money to get more.” Was that often, sometimes or never true for you in the last 12 months?
In the last 12 months, did you ever cut the size of your meals or skip meals because there wasn’t enough money for food?
In the last 12 months, did you ever not eat for a whole day because there wasn’t enough money for food?
Examples of Food Security Survey Questions
Theory of multiple-indicator measures
Food insecurity
Indicator#2
Indicator#3
Indicator#1
Indicator#4
0.00
0.25
0.50
0.75
1.00
0 2 4 6 8 10 12
"True" Severity of Household Food Insecurity
Pro
bab
ility
of
Aff
irm
ing
Item
5.374
Probability That a Respondent Affirms Item as Function of Severity of Food Insecurity Experienced
log[p/(1-p)] = householdseverity - itemseverity
0.0
0.2
0.4
0.6
0.8
1.0
0 2 4 6 8 10 12
Household score(severity of food insecurity)
Pro
babi
lity
of
aff
irm
ing
item
2.793
3.669
5.374
6.424
5.534
7.545
Item score
Response Functions of 6 Items with Different Severity but Equal Discrimination
Raw score0
1234
5678
910
Categories of food security
Foo
d s
ecu
re. .
. F
ood
inse
cure
. . .
High food security
Low food security
Very low food security
Marginal food security