. 2019 Nov 8;21(11):e14808. doi: 10.2196/14808

Table 1.

Clinical characteristics of the study population.

Clinical characteristics^a		Total (N=100)	Web-based test algorithm		P value^b
Clinical characteristics^a		Total (N=100)	1st generation (N=36)	2nd generation (N=64)	P value^b
Age (years), mean (SD)		25.4 (4.7)	25.3 (4.2)	25.5 (4.9)	.86
Sex (male), n (%)		47 (47)	23 (64)	24 (38)	.001
Current use of visual aids, n (%)		62 (62)	21 (58)	42 (6)	.58
	Spectacles	60 (60)	21 (58)	27 (61)	.88
	Contact lenses	22 (22)	7 (20)	15 (23)	.54
Previous ophthalmic treatment, n (%)		4 (4)	3 (8)	1 (2)	.12
Ocular complaints, n (%)		13 (13)	3 (8)	10 (16)	.34
Medication use, n (%)		13 (13)	2 (6)	11 (17)	.08
Refractive error^c , n (%)
	Emmetropia	16 (8)	4 (6)	12 (9)	N/A^d
	Mild myopia	119 (60)	40 (56)	79 (62)	N/A
	Severe myopia	32 (16)	13 (18)	19 (15)	N/A
	Hyperopia	32 (16)	15 (21)	17 (13)	N/A
	Total	199	72	127	.24

^aExcept where indicated otherwise, data are presented as n (%).

^bCalculated using an independent samples Student t test or Pearson chi-square test.

^cMild myopia was defined as refractive error of –3 D or less; severe myopia was defined as refractive error worse than –3 D. Refractive error was determined on the basis of the spherical equivalent of the manifest refraction value, and it is reported for both eyes separately.

^dNot applicable.