Automated verbal autopsy
SmartVA consists of two components: a simplified, shortened questionnaire to record responses from family members using a tablet or smartphone and the Tariff 2.0 (automated) method to diagnose the most probable COD from these responses.
VA must be rapid, reliable and cost-effective. It must not be onerous to the family of the deceased. The PHMRC shortened questionnaire or, SmartVA questionnaire, has been validated and streamlined to produce a minimal set of questions that elicits sufficient information about the symptoms suffered by the deceased to determine the main causes of death in a population.
SmartVA has been implemented as part of CRVS strengthening activities in Bangladesh, Brazil, China, Colombia, Myanmar, Papua New Guinea, Peru, Philippines, Rwanda, Solomon Islands and Sri Lanka. Previous versions of the questionnaire have been used in India, Tanzania, Indonesia and Mexico.
SmartVA is characterised by:
- A short form questionnaire developed for the specific purpose of cutting the time required for the administration of the VA interview (typically 45 to 50 minutes in research settings) in half, so that the method could be routinely applied in CRVS systems. Formal item-reduction methods were used to assess how diagnostic accuracy declined as the number of questions was reduced and were validated against the PHMRC Gold Standard database. Because the SmartVA questionnaire only collects the items of relevance for diagnosing the cause of death using the Tariff method, it is substantially shorter than the WHO2016 questionnaire which requires questions on all items required for applying either Tariff, InterVA or InSilicoVA.
- A method (Tariff), the diagnostic accuracy of which was validated and found to be superior to other diagnostic methods using the Gold Standard dataset from the PHMRC study (2009 to 2014)
- An electronic version of the short questionnaire that can be uploaded for use on tablets or smartphones
- SmartVA-Analyze software that automatically analyses these data using the Tariff 2.0 method.
A package of guidance materials is available to support implementation of SmartVA (see PDFs below).
- SmartVA: Interviewer's manual. This includes an introductory section and question-by-question guidance
- SmartVA: Facilitator's guide. This includes associated materials for those who will be training VA interviewers
- SmartVA: Technical user manual. This also covers all IT-related issues for collecting and managing VA data, including the Tariff analysis using SmartVA Analyze
Murray C et al. (2011). Population Health Metrics Research Consortium Gold Standard Verbal Autopsy Validation Study: design, implementation and development of analysis datasets. Pop. Health Metrics.
Serina P et al (2015). Improving performance of the Tariff Method for assigning causes of death to verbal autopsies. BMC Medicine.
Serina P et al. (2015) A shortened verbal autopsy instrument for use in routine mortality surveillance systems. BMC Medicine.
SmartVA: Facilitator's Guide
This guide has been produced to assist those who are responsible for training interviewers and supervisors on all aspects of verbal autopsy (VA) using electronic collection methods, specifically, the SmartVA questionnaire and analytical software. It provides advice regarding preparatory activities and documents, slide presentations and equipment necessary to run the different sessions.
SmartVA: Interviewer's manual
The information contained in this manual provides generic information to intended VA interviewers on how to conduct VA interviews systematically.
SmartVA: Technical user manual
The information contained in this manual provides generic information to technical support personnel for the implementation of automated VA methods.
Author: University of Melbourne
Publication date: January 2018
Resource type: CRVS technical guide
Related resources: SmartVA: Interviewer's manual