IHTAS STUDY
DATA MANAGEMENT
By
David Amadi
Objectives
• Positively identify participants for follow up
• Accurately Capture IHTAS information.
Processes in the system
• Randomize 1655 persons aged 13-24 selected
from KIDMS database.
• Uploading residents data into laptops
• Identification of participants in the field by
FWs
• Recording IHTAS data and anthropometric
measurements
• updates to the central database
Processes in the system
Data Capture System
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Use of ACASI
Inbuilt with skip pattern and validation checks
3 languages
Questions are displayed and read aloud by the
Computer
• Total listening time: 30 – 45 minutes
Advantages of ACASI
• Accurately measures stigmatized/sensitive behaviors
• Headphones used to keep the interview private
Quality Control
• Staging server conducts verification of the
process
• QC before Analysis to determine
 Out of range checks
 Logical checks
 Check for missing values
• Documentation of error instances
• Correcting identified errors
• Providing feedback to FWs
Challenges
• Recharging of laptops
• Expansive study region with challenging
terrain during rainy season.
Conclusion
• Standard survey information is efficiently
delivered electronically
• No violating anonymity
• ACASI feasible for high risk groups, illiterate &
computer-naïve persons
• Recruits can play and re-play as needed
Questions