As part of the experiment, parents of newborns will be randomly assigned to the control or one of several treatment groups. As described above, each group will receive different combinations of SECP-related letters and text messages from the NII.
The sample will consist of mothers of nearly all children born in Israel between 10/31/2021 and 03/30/2022. We will exclude several groups of parents, such as those who have an outstanding balance to the NII, those who gave birth outside the hospital, and new immigrants with the children under the age of 6 months. In total, we expect that approximately 52,000 parents will participate in the experiment.
The study will include a total of 11 experimental groups: the control group and 8 treatment groups will include 4,000 parents per group, and 2 remaining treatment groups will include 8,000 parents each. These remaining groups include (i) an intervention that includes an attachment describing the program in Arabic (along with the current design of a text message) and (ii) an intervention that sends out text messages to both parents/caretakers of a newborn (along with the updated design of a letter).
We will use NII’s administrative data to analyze study outcomes. The outcomes will be tracked over a period of six months since childbirth, since this is the period during which parents can make active SECP decisions.
Administrative data will be supplemented with survey data of a random sample of experiment participants.