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. 2013 Dec 28;13:1236. doi: 10.1186/1471-2458-13-1236

Table 2.

Demographics

Demographics Total% (n/N)
Sex
Male
96.1 (1996/2077)
 
Male-to-female (sex change)
0 (1/2077)
 
Intersex or transgender
3.9 (80/2077)
Age
18–20
30.3 (628/2074)
(years)
21–25
41.1 (852/2074)
 
26–30
15.5 (322/2074)
 
31–35
7.1 (147/2074)
 
36–40
3.2 (66/2074)
 
Older than 40
2.8 (59/2074)
Marital Status
Single
92.4 (1878/2033)
 
Married
6.2 (127/2033)
 
Separated or Divorced or Widow
1.4 (28/2033)
Education
Did not go to school
0.4 (8/2061)
 
Completed primary school only
0.1 (3/2061)
 
Completed up to secondary school
2.5 (52/2061)
 
Completed up to high school
25.2 (520/2061)
 
Completed up to university, college or vocational school
63.5 (1309/2061)
 
Completed post-graduate level
8.2 (169/2061)
Occupation
Student
44.0 (905/2056)
 
Office workers or sales clerk
32.5 (668/2056)
 
Self-employed
8.5 (175/2056)
 
Government employee
6.9 (142/2056)
 
Laborer
3.8 (79/2056)
 
Sex worker
0.5 (10/2056)
 
Other
3.7 (77/2056)
Salary (monthly)††
No income
20.8 (425/2044)
 
Less than VND 1,000,000
9.5 (195/2044)
 
VND 1,000,000–5,000,000
38.6 (789/2044)
 
Above VND 5,000,000–10,000,000
18.6 (380/2044)
 
More than VND 10,000,000
12.5 (255/2044)
Internet Usage (weekly)
Do not use Internet
0.3 (7/2057)
Less than 3 hours
6.5 (134/2057)
 
3–7 hours
14.9 (307/2057)
 
8–12 hours
16.7 (343/2057)
 
13–15 hours
13.0 (268/2057)
  16 hours or more 48.5 (998/2057)

The survey included two separate questions about age: 1) screening question: are you 18 years or older? 2) main questionnaire: what is your age? Three cases responded ‘Yes’ to the screening question but did not respond to the age question in the main questionnaire.

††Average USD/VND exchange rate during data collection period: 20,992.54 (Source: http://Oanda.com).