Duty of secrecyThe data you were collecting from your village are related to individuals and therefore very sensitive. These data are not determined to be presented as such in public - and it is not legal to store them in your computer.
Anyway - you need the data for the test - but do not keep them. Please destroy them after the test. If you collate data like this, you have a great responsibilty. Please avoid all activities which give reasons for mistrust. Please remember this if you give comments on the situation of your village - never mention facts which are related directly to an individual person or household ("those from village street Nr. 15...")
Nothing would stress your activities for the future of your village more than an atmosphere of mistrust.