IndiKit recommends two main options for measuring household consumption:
A) The Living Standards Measurement Study
The Living Standards Measurement Studies assess household members' consumption of 20-40 food items and a similar number of non-food items/ services over a given time period. Subsequently, they calculate their financial value, make adjustments for costs of living (if required), and for the household size and composition. They provide detailed and relatively reliable data; however, their design and implementation take considerable time and resources. Examples of such a questionnaire and methodology guidance are provided in the links below (do not be deterred by their length - the questionnaires can be shortened considerably).
B) The Restricted Household Consumption Survey
Instead of providing a comprehensive overview of household consumption, the second option focuses on assessing changes in the consumption of a limited number of commonly desired goods and services – an important indicator of a household's living standard. It requires the following steps:
1) Pre-define the assessed goods and services: select a limited number (up to 15) of those foods, non-food items and services which the target households consume only if they have (slightly) more resources – for example, meat, certain types of fresh foods, sugar, phone credit, entertainment, or private education.
2) Set the recall period: 7 days is the recommended recall period; if you selected goods and services that are relatively easy to remember, consider using a 14 days recall period.
3) Design and pilot the questionnaire, collect and analyze the data: assess the amount and financial value of the consumed goods and services; if you want to assess also the "per capita household consumption", divide the total financial value by the number of household members.