Table I Social media usage and...

Table I

Social media usage and demographic variables

Usage variables	Overall		Cognitive		Affective		Behavioral
Usage variables	n	(%)	n	(%)	n	(%)	n	(%)
Access
Mobile device	7,726	57.4	2,984	58.8	2,328	55.7	2,414	57.4
PC	1,035	7.7	461	9.1	332	7.9	242	5.8
Mobile Device & PC	4,701	34.9	1,631	32.1	1,520	36.4	1,550	36.9
Length of usage
≤1 year	2,390	17.8	1,107	21.8	721	17.2	562	13.4
2 years	2,975	22.1	1,106	21.8	934	22.3	935	22.2
3 years	3,163	23.5	1,076	21.2	998	23.9	1,089	25.9
4 years	2,365	17.6	820	16.2	738	17.7	807	19.2
≥5 years	2,569	19.1	967	19.1	789	18.9	813	19.3
Log-on frequency
Daily	8,402	62.4	3,127	61.6	2,639	63.1	2,636	62.7
2-4 times a week	2,793	20.7	1,033	20.4	882	21.1	878	20.9
Once a week	1,295	9.6	495	9.8	383	9.2	417	9.9
2-4 times a month	571	4.2	264	5.2	166	4.0	141	3.4
Once a month	401	3.0	157	3.1	110	2.6	134	3.2
Log-on duration
≤1 h	4,920	36.5	1,645	32.4	1,684	40.3	1,591	37.8
2 h	3,273	24.3	1,209	23.8	929	22.2	1,135	27.0
3 h	2,425	18.0	1,014	20.0	692	16.6	719	17.1
4 h	1,202	8.9	569	11.2	338	8.1	295	7.0
≥5 h	1,642	12.2	639	12.6	537	12.8	466	11.1
Profile update incidence
Daily	3,558	26.4	1,300	25.6	1,137	27.2	1,121	26.7
2-4 times a week	2,867	21.3	994	19.6	878	21.0	995	23.7
Once a week	2,783	20.7	1,099	21.7	828	19.8	856	20.4
2-4 times a month	1,636	12.2	742	14.6	479	11.5	415	9.9
Once a month	2,618	19.4	941	18.5	858	20.5	819	19.5
Demographic variables
Gender
Male	5,854	43.5	2,179	42.9	1,784	42.7	1,891	45.0
Female	7,608	56.5	2,897	57.1	2,396	57.3	2,315	55.0
Age
13-14	2,458	18.2	664	13.1	889	21.3	905	21.5
15-16	5,152	38.3	1,793	35.3	1,653	39.5	1,706	40.6
17-18	5,852	43.5	2,619	51.6	1,638	39.2	1,595	37.9
Population group
White	1,865	13.9	542	10.7	627	15.0	696	16.5
Black	4,777	35.5	2,205	43.4	1,577	37.7	995	23.7
Colored	6,302	46.8	2,130	42.0	1,849	44.2	2,323	55.2
Indian/Asian	518	3.8	199	3.9	127	3.0	192	4.6

Usage variables	Overall		Cognitive		Affective		Behavioral
Usage variables	n	(%)	n	(%)	n	(%)	n	(%)
Access
Mobile device	7,726	57.4	2,984	58.8	2,328	55.7	2,414	57.4
PC	1,035	7.7	461	9.1	332	7.9	242	5.8
Mobile Device & PC	4,701	34.9	1,631	32.1	1,520	36.4	1,550	36.9
Length of usage
≤1 year	2,390	17.8	1,107	21.8	721	17.2	562	13.4
2 years	2,975	22.1	1,106	21.8	934	22.3	935	22.2
3 years	3,163	23.5	1,076	21.2	998	23.9	1,089	25.9
4 years	2,365	17.6	820	16.2	738	17.7	807	19.2
≥5 years	2,569	19.1	967	19.1	789	18.9	813	19.3
Log-on frequency
Daily	8,402	62.4	3,127	61.6	2,639	63.1	2,636	62.7
2-4 times a week	2,793	20.7	1,033	20.4	882	21.1	878	20.9
Once a week	1,295	9.6	495	9.8	383	9.2	417	9.9
2-4 times a month	571	4.2	264	5.2	166	4.0	141	3.4
Once a month	401	3.0	157	3.1	110	2.6	134	3.2
Log-on duration
≤1 h	4,920	36.5	1,645	32.4	1,684	40.3	1,591	37.8
2 h	3,273	24.3	1,209	23.8	929	22.2	1,135	27.0
3 h	2,425	18.0	1,014	20.0	692	16.6	719	17.1
4 h	1,202	8.9	569	11.2	338	8.1	295	7.0
≥5 h	1,642	12.2	639	12.6	537	12.8	466	11.1
Profile update incidence
Daily	3,558	26.4	1,300	25.6	1,137	27.2	1,121	26.7
2-4 times a week	2,867	21.3	994	19.6	878	21.0	995	23.7
Once a week	2,783	20.7	1,099	21.7	828	19.8	856	20.4
2-4 times a month	1,636	12.2	742	14.6	479	11.5	415	9.9
Once a month	2,618	19.4	941	18.5	858	20.5	819	19.5
Demographic variables
Gender
Male	5,854	43.5	2,179	42.9	1,784	42.7	1,891	45.0
Female	7,608	56.5	2,897	57.1	2,396	57.3	2,315	55.0
Age
13-14	2,458	18.2	664	13.1	889	21.3	905	21.5
15-16	5,152	38.3	1,793	35.3	1,653	39.5	1,706	40.6
17-18	5,852	43.5	2,619	51.6	1,638	39.2	1,595	37.9
Population group
White	1,865	13.9	542	10.7	627	15.0	696	16.5
Black	4,777	35.5	2,205	43.4	1,577	37.7	995	23.7
Colored	6,302	46.8	2,130	42.0	1,849	44.2	2,323	55.2
Indian/Asian	518	3.8	199	3.9	127	3.0	192	4.6

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