Table 4. Observation checklist on steps listed on instructions for use in Zambia (N = 1119).

Questions on observation checklist	Positive answer
	n	%
Did participant place tube on the kit box tray holder correctly?	805	71.9
Did participant insert swab into the left nostril to the correct depth?	1106	98.8
Did participant rotate the swab 5 times in the left nostril?	1018	91.0
Did participant insert the swab into the right nostril to the correct depth?	1094	97.8
Did the participant rotate the swab 5 times in the right nostril?	1094	97.8
Did the participant insert the swab into the solution tube correctly?	1117	99.8
Did the participant swirl in the fluid 5 times while pushing against the wall of the Tube	799	71.4
Did the participant remove the swab slowly while squeezing the sides of the tube to extract the liquid from the swab?	625	55.9
Did the participant break the swab correctly and press the nozzle cap tightly onto the tube?	672	60.1
Did the participant squeeze 5 drops of liquid from the Tube into the well on the Test Device?	986	88.1
Did the participant read the test result in 15 minutes?	1113	99.5