Table 3.

Indicators for operational feasibility evaluation

Indicator	Method of measurement
Power supply	Time log for power cuts/generator use
Operating temperature for GeneXpert machine	Temperature log
Storage temperature for Xpert MTB/RIF kits	Temperature log
Hands-on user time	Activity log
Indeterminate results	GeneXpert software
Data errors (incomplete identifiers etc.)	GeneXpert software
Maintenance needs	Requirement for supplier support
Training requirements	Recording of initial and follow-up training sessions
Supervision requirements	Log of assistance from other laboratory staff/PI
Waste management	Recording of problems with disposal of used cartridges
User appraisal	Regular appraisal by laboratory staff and study staff
User performance	Regular independent observation of staff performance