Table 8. Comparison of physician and CHT attributes affecting the completeness, accuracy and bias of data collected by each method for history-taking.

Attribute	Physician	CHT
Limited short term memory	Yes	No
Non-expandable cognitive capacity for learning impacted negatively by time-pressure and distraction	Yes	No
Use heuristics to collect and interpret data	Yes	No
Limited time with patient	Yes	No
Limit patient’s answer-times to seconds	Yes	No
Leverage expertise and scale resources to need	No	Yes
Complete control of what is asked and what is not asked to standardize data collection	No	Yes
Automated data-entry into a structured, electronic database	No	Yes
History-taking in the patient’s preferred language	Maybe	Always