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. 2015 Apr 13;17(4):e94. doi: 10.2196/jmir.3734

Table 1.

Sex, age, and devices used by study participants.

Parameter		TL– (with no time limit)	TL+ (with time limit)	Statistical test
Sex, female^a, n (%; 95% CI)		25/31 (81; 64-92)	26/32 (81; 65-92)	χ ² ₁=0.07, P=.80
Age, years^a				t ₆₁=1.44, P=.16
	mean (SD)	22.2 (1.8)	21.6 (1.7)
	median (range)	22.0 (20-27)	21.0 (19-26)
Device used n (%; 95% CI) ^b				Fisher’s exact test, P=.94
	Desktop/laptop	15/35 (43; 27-60)	14/37 (38; 23-54)
	Mobile phone	16/35 (46; 30-62)	19/37 (51; 36-67)
	Tablet	4/35 (11; 4-25)	4/37 (11; 4-24)

^aBased on subjects who completed the survey.

^bBased on subjects who started the survey, since only overall statistics were available.