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Table 2 Demographics of intervention group at baseline survey (n = 411)

From: mHealth information for migrants: an e-health intervention for internal migrants in Vietnam

Variable n %
Average age (years) 21.6 ± 3.2
Average income (in millions of VND) 1.3 ± 1.2
(1 USD = 22,500 VND)
Average temporary residence period at Long Bien(months) 5.0 ± 3.8
Marital status   
Unmarried 345 83.9
Married 66 16.1
Highest education   
Primary 25 6.1
Secondary 136 33.1
High school 175 42.6
Vocational school 27 6.6
College/university and higher 48 11.7
Number of migrations   
1 time (the first time) 260 64.2
Many times (with specific number) 40 9.9
Many times (without number) 81 20.0
Not sure 24 5.9
Registered temporary residence 405 98.5
Have health insurance 263 64.0