Table 2 Characteristics of index cases and neighbors sleeping in the forest and farm in Phu Yen province, Vietnam, 2016
Characteristics | Category | Index Case | Neighbor | Total | POR (95% CI) |
|---|---|---|---|---|---|
Sleeping in the forest | n = 54 (n, %) | n = 39 (n, %) | n = 93 (n, %) | ||
Bed or hammock net use *more than one answer possible | - Do not use bed-nets or hammock nets -Use untreated nets Adjusted for education level -Use treated bed-nets Adjusted for education level | 35 (64.8) 20 (37.0) 2 (3.7) | 15 (38.5) 24 (61.5) 7 (17.9) | 50 (53.8) 44 (47.3) 9 (9.7) | 2.95 (1.26, 6.92) 0.37 (0.16, 0.86) 0.42 (0.17, 1.00)a 0.18 (0.03, 0.90) 0.10 (0.02, 0.58)a |
Forest trips per year | > 5 trips 5 trips or less | 31 (57.4) 23 (42.6) | 6 (15.4) 33 (84.6) | 37 (39.8) 56 (60.2) | 7.41 (2.66, 20.63) |
Nights per trip in the forest | 7 nights or less > 7 nights | 27 (50) 27 (50) | 3 (7.7) 36 (92.3) | 30 (32.3) 63 (67.7) | 12.00 (3.29, 43.72) |
Type of place for sleeping | Hut without wall/outdoor Hut with wall | 48 (88.9) 6 (11.1) | 6 (15.4) 33 (84.6) | 54 (58.1) 39 (41.9) | 44.00 (13.05, 148.33) |
Main work in the forest | Deep Forest: Aloe hunter, trapper, plantation and timber Forest Fringe: Forest guard, trader, construction worker | 42 (77.8) 12 (22.2) | 9 (23.1) 30 (76.9) | 51 (54.8) 42 (45.2) | 11.67 (4.37, 31.18) |
Work after dark | Never Sometimes | 49 (90.7) 5 (9.3) | 25 (64.4) 14 (35.9) | 74 (79.6) 19 (20.4) | 5.48 (1.84, 16.35) |
Sleeping in the farm | n = 53 | n = 151 | n = 204 | ||
Bed or hammock net use | - Do not use bed-nets or hammock nets - Use untreated nets Adjusted for education level - Use treated bed-nets Adjusted for education level | 23 (43.4) 21 (39.6) 13 (24.5) | 67 (44.4) 50 (33.1) 56 (37.1) | 90 (44.1) 71 (34.8) 69 (33.8) | 0.96 (0.51, 1.81) 1.33 (0.69, 2.53) 0.55 (0.27, 1.12) |
Forest trips per year | > 5 trips 5 trips or less | 37 (69.8) 16 (30.2) | 87 (57.6) 64 (42.4) | 124 (60.8) 80 (39.2) | 1.70 (0.85, 3.32) |
Nights per trip in the forest | 7 nights or less > 7 nights | 36 (67.9) 17 (32.1) | 95 (62.9) 56 (37.1) | 131 (64.2) 73 (35.8) | 1.25 (0.87, 2.43) |
Type of place for sleeping | Hut without wall/outdoor Hut with wall | 37 (69.8) 16 (30.2) | 88 (53.3) 63 (41.7) | 125 (61.3) 79 (38.7) | 1.66 (0.85, 3.21) |
Main work in the forest | Deep Forest: Aloe hunter, trapper, plantation and timber Forest Fringe: Forest guard, trader, construction worker | 15 (28.3) 38 (71.7) | 19 (12.6) 132 (87.4) | 34 (16.7) 170 (83.3) | 2.74 (1.27, 5.91) |
Work after dark | Never Sometimes | 26 (49.1) 27 (50.9) | 60 (39.7) 91 (60.3) | 86 (42.2) 118 (57.8) | 1.46 (0.78, 2.73) |