TABLE 2.
Demographics of patients presenting to healthcare facilities with respiratory symptoms
| All participants (n=977) | Central/provincial facilities (n=487) | District facilities (n=405) | Commune facilities (n=85) | |
| Age years | 59 (47–67) | 57 (42–66) | 60 (50–67) | 61 (52–68) |
| Male sex | 643 (65.8) | 333 (68.4) | 250 (61.7) | 60 (70.6) |
| Body mass index# | 21.7 (19.0–24.1) | 20.8 (18.4–23.6) | 22.4 (20.2–24.6) | 21.7 (19.4–24.1) |
| Highest education level¶ | ||||
| Primary | 365 (38.6) | 178 (38.5) | 156 (39.0) | 31 (36.9) |
| Secondary | 480 (50.7) | 224 (48.5) | 208 (52.0) | 48 (57.2) |
| University | 92 (9.7) | 54 (11.7) | 33 (8.3) | 5 (6.0) |
| Unknown/no answer | 9 (1.0) | 6 (1.3) | 3 (0.8) | 0 (0.0) |
| Comorbidity¶ | ||||
| Heart disease | 150 (15.9) | 80 (17.3) | 60 (15.0) | 10 (11.9) |
| Hypertension | 285 (30.1) | 115 (24.9) | 141 (35.3) | 29 (34.5) |
| Diabetes | 74 (7.8) | 36 (7.8) | 30 (7.5) | 8 (9.5) |
| Asthma, asthmatic bronchitis or allergic bronchitis | 142 (15.0) | 73 (15.8) | 55 (13.8) | 14 (16.7) |
| COPD | 93 (9.8) | 50 (10.8) | 38 (9.5) | 5 (6.0) |
| Chronic bronchitis | 175 (18.5) | 88 (19.1) | 68 (17.0) | 19 (22.6) |
| History of tuberculosis | 119 (12.6) | 63 (13.6) | 41 (10.3) | 7 (8.3) |
| Smoking history¶ | ||||
| Male | ||||
| Current smoker | 318 (51.2) | 165 (52.1) | 113 (46.1) | 40 (67.8) |
| Ex-smoker | 169 (27.2) | 89 (28.1) | 68 (27.8) | 12 (20.3) |
| Never smoked | 134 (21.6) | 63 (19.9) | 64 (26.1) | 7 (11.9) |
| Female | ||||
| Current smoker | 3 (0.9) | 1 (0.7) | 1 (0.7) | 1 (4.0) |
| Ex-smoker | 3 (0.9) | 2 (1.4) | 1 (0.7) | 0 (0.0) |
| Never smoked | 319 (98.1) | 142 (97.9) | 153 (98.7) | 24 (96.0) |
| Geographic region | ||||
| Northern Vietnam | 568 (58.1) | 321 (65.9) | 205 (50.6) | 42 (49.4) |
| Southern Vietnam | 409 (41.9) | 166 (34.1) | 200 (49.4) | 43 (50.6) |
Data are presented as median (interquartile range) or n (%). #: nine missing values; ¶: 31 paediatric patients <15 years old not asked.