. 2020 Oct 9;8(10):e21364. doi: 10.2196/21364

Table 3.

Demographic characteristics of the study population.

Demographic characteristics		Germany			United Kingdom
		Baseline, n^a (%)	Measures, n^a (%)	P value^b	Baseline, n^a (%)	Measures, n^a (%)	P value^b
Sex
	Female	36,300 (66.2)	32,300 (66.9)	.02	26,600 (72.2)	24,600 (72.9)	.02
Age^c (years)
	0-9	1300 (2.4)	700 (1.6)	<.001	900 (2.4)	700 (2.0)	<.001
	10-19	17,100 (32.1)	13,700 (29.2)	<.001	16,200 (45.1)	13,600 (41.2)	<.001
	20-29	20,000 (37.5)	17,800 (37.9)	.28	11,000 (30.7)	10,100 (30.7)	.95
	30-39	6400 (12.0)	6000 (12.9)	<.001	3100 (8.7)	3300 (9.9)	<.001
	40-59	6900 (13.0)	6800 (14.6)	<.001	4000 (11.2)	4500 (13.6)	<.001
	≥60	1700 (3.2)	1800 (3.9)	<.001	700 (2.1)	900 (2.7)	<.001

^aNumbers were rounded to the nearest hundred.

^bValues were obtained from Pearson chi-square tests for differences between Baseline and Measures data.

^cUsers who did not report a birth year were excluded from the analysis.