Table 1 Description of the samples...

Table 1

Description of the samples

		Proportion (%)	Number of Samples
Gender	Male	47.9	3061
Gender	Female	52.1	3323
Marriage	With spouse	83.0	5297
	Unmarried	7.3	467
	Divorced	6.7	428
	Widow	3.0	192
Age	Under 39 years old	22.5	1438
	40–59 years old	28.6	1825
	More than 60 years old	48.9	3121
Number of family members	Three	32.6	2082
	Two	31.9	2036
	More than four	25.1	1603
	Live alone	10.4	663
Housing area	Less than 50 m² of house rental	3.4	216
	51–100 m²	72.3	4617
	101–150 m²	22.5	1436
	151–200 m²	0.9	57
	200 m² or more	0.9	58
Education	Primary school or lower	15.3	979
	Middle school	34.3	2189
	High school	23.9	1526
	Secondary vocational school/ technical school/ college	18.9	1204
	Bachelor’s degree or higher	7.6	486
Ever surfing the internet	Yes	81.5	5203
Ever surfing the internet	No	18.5	1181
Ever use of WeChat/QQ	Yes	83.8	5351
Ever use of WeChat/QQ	No	16.2	1033

		Proportion (%)	Number of Samples
Gender	Male	47.9	3061
Gender	Female	52.1	3323
Marriage	With spouse	83.0	5297
	Unmarried	7.3	467
	Divorced	6.7	428
	Widow	3.0	192
Age	Under 39 years old	22.5	1438
	40–59 years old	28.6	1825
	More than 60 years old	48.9	3121
Number of family members	Three	32.6	2082
	Two	31.9	2036
	More than four	25.1	1603
	Live alone	10.4	663
Housing area	Less than 50 m² of house rental	3.4	216
	51–100 m²	72.3	4617
	101–150 m²	22.5	1436
	151–200 m²	0.9	57
	200 m² or more	0.9	58
Education	Primary school or lower	15.3	979
	Middle school	34.3	2189
	High school	23.9	1526
	Secondary vocational school/ technical school/ college	18.9	1204
	Bachelor’s degree or higher	7.6	486
Ever surfing the internet	Yes	81.5	5203
Ever surfing the internet	No	18.5	1181
Ever use of WeChat/QQ	Yes	83.8	5351
Ever use of WeChat/QQ	No	16.2	1033

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