Table 2.

Interview preference and technological affinity

	Response	Mobile phone questionnaire	Face-to-face interview
Do you know what Mxit is?	No	43 (13.0%)	119 (13.3%)
	Yes	287 (87.0%)	777 (86.7%)
Have you ever used Mxit?	No	110 (36.9%)a	358 (43.9%)b
	Yes	188 (63.1%)b	457 (56.1%)a
Do you know what Skype is?	No	275 (83.8%)a	801 (89.9%)b
	Yes	53 (16.2%)b	90 (10.1%)a
Have you ever used Skype?	No	110 (84.0%a	300 (91.7%)b
	Yes	21 (16.0%)b	27 (8.3%)a

^aSignificantly more than expected (p < .05).

^bSignificantly more than expected (p < .05).