Services
From block listing to universe estimation
We cover the complete data cycle: fieldwork, quality control, statistical processing, and delivery.
Methodology
Our fieldwork process
- 1
Listing and counting
Household listing and counting by city block, with cartographic updates whenever a block has changed from the available mapping.
- 2
Field data collection
Face-to-face household surveys through our CAPI platform, with GPS geolocation, photo evidence, and audio recording of every interview.
- 3
Callback protocol
Documented contact attempts and callbacks before authorizing any substitution, aimed at meeting the minimum response rate.
- 4
Quality control
Field audits and centralized phone verification (back-checks), run by a team independent from field coordinators.
- 5
Processing and delivery
Database validation, expansion factor calculation, and figure generation through reproducible scripts.
Deliverables
Complete statistical capabilities
Database
In the required formats (.csv, .txt, or others), with GPS coordinates, primary respondent, and location.
Field evidence
GPS, audio, photography, and contact-attempt records for every interview completed.
Expansion factors
Creation, calibration, and adjustment according to the study's sample design.
Reproducible scripts
In R and/or Python for figure generation, documented and deliverable.
Universe estimates
Universe estimation for audience or target-population measurement.
Listing and mapping
Household counts by block and cartographic updates when applicable.
Sampling rigor in the field: we apply strict selection and callback protocols, aimed at meeting the minimum required response rate on seed selections for every study.