Preparation steps and analyses in this project were done with stata and r. Folder PROG contains Stata Do-Files and R-Scripts that create new datasets and results. 
Do-Files and R-Scripts must run in the following order:

SUBFOLDER: stata_data
01_master.do
02a_IntDur.do
02b_ContactData.do
02c_IntQuest.do
02d_preparation_suf.do
03_preparation_prel_data.do
creates the datasets for the ml training

SUBFOLDER: r_analyses
00_packages.R
01_pass.R
02_train_models.R
03_evaluation.R
04_graphics.R
05_predict_w13.R
creates the results used in Table 1 and Figures A1 & A2

SUBFOLDER: stata_incentives
04_assignment_incentives.do
creates the assignment to the incentives for the experiment in wave 14

SUBFOLDER: stata_analyses
1_Preparation.do			 
2a_Analyses_RR_CAPI.do		 
2b_Analyses_RR_CATI.do			 
2c_Analyses_RR_CAPI_CATI_Decile.do
3_Preparation_Bias.do			 
4_Initial_Bias.do		 
4a_Analyses_Bias_CAPI.do			 
4b_Analyses_Bias_CATI.do
4c_Analyses_Bias.do
analyzes the experiment with wave 14 data and creates the results used in Table 2 - 6 and Tables A3a - A4g
