Skip to main content

Table 3 Sampling structure

From: Financial work incentives for disability benefit recipients: lessons from a randomised field experiment

  Obs. % full sample Stratified
1) Full sample 37,853 100 % No
 2) Invited for survey participation 8,000 21 % Yes
  3) Survey participants 4,049 11 % Yes
  Nonparticipants 3,951 10 % Yes
  4) Experimental sample 6,020 16 % Yes
   Seed capital high 2,000 5 % Yes
   Seed capital low 2,000 5 % Yes
   Control group 2,020 5 % Yes
   5) Simulation sample 2,273 6 % Yes
  1. Note: Selection for participation took place in two steps: From the total of 37,853 individuals who were observed in the administrative records in June 2009, 2,814 individuals have been excluded, primarily as their current residence was outside of the cantons of St. Gallen and Vaud. From the remaining 35,039 individuals, 8,000 individuals have been randomly selected to participate in a survey. Random sampling was stratified by three age groups. The experimental sample consists of all individuals who were invited to participate in the survey but excluded individuals who are likely to live in a nursing home and individuals with a disabled partner (to avoid spill-over effects if one person gets randomised into the low and the other person gets randomised into the high seed capital group). The simulation sample consists of all individuals in the treatment and comparison group who participated in the survey and have non-missing information on incomes and benefit payments. Individuals who have never worked before DI entry were excluded, because wage predictions are based on work history prior to disability. Source: Own calculations based on administrative and survey data, provided by the Federal Office for Social Insurance, Switzerland