Table 2

Descriptive statistics of sociodemographic variables and sexual partner preferences

CategoryCovariatenRaw Prop. (%)RDSII Est (%)95% CI (%)
Age (years)18–20215252522 to 30
21–22288343429 to 37
23–25202242017 to 23
26–30103121310 to 16
>3049685 to 12
Don't want to answer0
Education (highest level started)12 years or less117131915 to 25
2-year college63786 to 11
3-year college156191714 to 21
Bachelor level, university482575247 to 57
Masters/doctorate level university34442 to 5
Don't want to answer5
Income (million VND all sources)0–less than 187111310 to 17
1–less than 3335414540 to 50
3–less than 5226282522 to 29
Above 5164201714 to 20
Don't want to answer45
ProvinceHCMC339403222 to 34
Ha Noi256302618 to 29
Hai Phong55785 to 12
Khang Hoa20232 to 8
Can Tho5110 to 2
Da Nang15211 to 2
Other160192927 to 38
Don't want to answer7
Internet use (days per month)1–76481921 to 35
8–14729129 to 15
15–21150181614 to 20
22–30559665345 to 56
Don't want to answer12
Partner preferencePrefer only men544686661 to 70
Prefer men to women181232017 to 23
Prefer women to men20232 to 5
Prefer only women5871212 to 24
Don't want to answer54
  • CI, confidence interval; HCMC, Ho Chi Minh City.