The prevalence and sociodemographical risk factors for domestic secondhand smoke exposure among non-smokers in Khanh Hoa Province, Vietnam, 2006
| Characteristic | Total (%), n=292917 | SHS* exposed (%), n=167298 | UOR† (95% CI) | p Value | AOR‡ (95% CI) | p Value |
| Sex | ||||||
| Female | 177702 (60.7) | 107732 (60.6) | 1.43 (1.41 to 1.45) | <0.0001 | 1.75 (1.72 to 1.78) | <0.0001 |
| Male | 115215 (39.3) | 59566 (51.7) | 1 | 1 | ||
| Age, years | ||||||
| 0–9 | 53669 (18.3) | 34511 (64.3) | 1.97 (1.91 to 2.03) | <0.0001 | 2.05 (1.99 to 2.12) | <0.0001 |
| 10–19 | 75332 (25.7) | 49024 (65.1) | 1.98 (1.92 to 2.03) | <0.0001 | 2.02 (1.96 to 2.08) | <0.0001 |
| 20–29 | 48876 (16.7) | 28199 (57.7) | 1.54 (1.49 to 1.58) | <0.0001 | 1.48 (1.43 to 1.53) | <0.0001 |
| 30–39 | 42777 (14.6) | 21837 (51.1) | 1.20 (1.17 to 1.24) | <0.0001 | 1.16 (1.13 to 1.20) | <0.0001 |
| 40–49 | 32161 (11.0) | 14719 (45.8) | 1 | 1 | ||
| 50–59 | 16905 (5.8) | 7994 (47.3) | 1.01 (0.97 to 1.05) | 0.62 | 1.02 (0.98 to 1.06) | 0.35 |
| 60–69 | 11066 (3.8) | 5355 (48.4) | 0.99 (0.95 to 1.04) | 0.70 | 1.02 (0.97 to 1.07) | 0.44 |
| ≥70 | 12131 (4.1) | 5659 (46.7) | 0.91 (0.87 to 0.96) | 0.0001 | 0.98 (0.93 to 1.02) | 0.33 |
| Number of household members | ||||||
| <4 | 39760 (13.6) | 12027 (30.3) | 1 | 1 | ||
| 4–5 | 129650 (44.3) | 71782 (55.4) | 2.97 (2.90 to 3.05) | <0.0001 | 2.81 (2.74 to 2.89) | <0.0001 |
| 6–8 | 90658 (31.0) | 60971 (67.3) | 4.77 (4.64 to 4.90) | <0.0001 | 4.57 (4.44 to 4.69) | <0.0001 |
| >8 | 32849 (11.2) | 22518 (68.6) | 6.18 (5.97 to 6.39) | <0.0001 | 5.91 (5.71 to 6.12) | <0.0001 |
| Wealth level | ||||||
| Lowest fifth | 72108 (24.6) | 46052 (63.9) | 1.53 (1.49 to 1.57) | <0.0001 | 1.64 (1.59 to 1.68) | <0.0001 |
| Second fifth | 55961 (19.1) | 38514 (68.8) | 2.07 (2.01 to 2.12) | <0.0001 | 2.03 (1.97 to 2.09) | <0.0001 |
| Middle fifth | 43159 (14.7) | 25760 (59.7) | 1.61 (1.57 to 1.65) | <0.0001 | 1.60 (1.55 to 1.65) | <0.0001 |
| Fourth fifth | 60368 (20.6) | 32287 (53.5) | 1.37 (1.34 to 1.40) | <0.0001 | 1.36 (1.32 to 1.39) | <0.0001 |
| Highest fifth | 61321 (20.9) | 24685 (40.3) | 1 | 1 | ||