picking up the phone (13.9% of the baseline sample), phone numbers being out of service or belonging to someone else (10.1%), households having their mobile phones turned off (8.8%) and the respondents being busy or not available to participate in the survey (4%).<sup>18</sup> Non-response reasons were similar for previous rounds but at lower rates.<sup>19</sup> Section 4.4 discusses attrition in more detail and describes how it will be accounted for when estimating program impacts.

# _Primary outcomes_

The baseline and follow-up surveys collected information on multiple topics, including household demographics (number of household members by gender and age group, language abilities of household members, and children’s school attendance), household expenditures, diversity of foods consumed, strategies to cope with lack of resources (such as reduced food consumption, selling assets, or return of household members to their country of origin), main sources of income, debt levels and repayments, remittances, etc.

After baseline, but before gaining access to any of the follow-up data, we registered a pre-analysis plan with the <u>EGAP study registration platform, which, unlike the AEA trial registry</u> that is only open to randomizedcontrolled trials, allows the registration of quasi-experimental designs like ours. The primary outcomes were per capita household expenditures, share of school-aged children attending school regularly, and indices for the Food Consumption Score (FCS), Reduced Coping Strategies (RCS), and Livelihood Coping Strategies. The three indices are described in detail below. The components of the indices were included as secondary outcomes in the pre-analysis plan. In addition, we also analyzed impacts on total household expenditures, as we did not anticipate the potentially large spillover effects with respect to household composition.

# _a) Total and Per Capita Household Expenditure_

Households were asked about their monthly expenditures on the following categories: rent, utilities (electricity/heating/gas for cooking), hygiene items, health, education, water, telecommunications (telephone/internet), transportation, debt repayments, celebrations (social events, births, weddings, religious ceremonies etc.) and other expenditures (clothing, tobacco and others). In addition, households were asked about food expenditure using last week as the reference period. After baseline, an additional category was added into the expenditure module on remittances sent abroad.

> 18 For the remaining 6% of those lost to 18-month follow-up, the reasons for not being reached included households being available only after working hours, terminating the interview before completion, households not wanting to be called again or refusing to participate in the household survey, enumerators not having the relevant language skills to conduct the interview, households moving back to Syria or to a third country.

> 19 For instance, at the 12-month follow-up, 8.6% of the households from the baseline had numbers that were changed or belonged to someone else, 6.5% had not picked up their phones, and a further 6.5% had their mobile phones turned off. 2.3% of the baseline households were busy or not available to participate in the survey. 5% of the baseline sample was not reached due to the other reasons enumerated above.

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