Table 3 Multivariate analysis of risk factors associated with IFI among adults (18–87 years) in summer and winter (n = 584)
Variables | Â | Summer | Winter | ||||
|---|---|---|---|---|---|---|---|
N | No. (%) | aOR (95% CI) | p | No. (%) | aOR (95% CI) | p | |
Gender | |||||||
 Woman | 306 | 248 (81.0) | 2.683 (1.830–3.934) | < 0.001 | 272 (88.9) | 2.636 (1.677–4.142) | < 0.001 |
 Man | 278 | 168 (60.4) |  |  | 210 (75.5) |  |  |
Age | |||||||
 18–34 | 195 | 139 (71.3) |  |  | 168 (86.2) | 1 | 0.056 |
 35–54 | 191 | 140 (73.3) |  |  | 148 (77.5) | 0.534 (0.311–0.915) | 0.022 |
  ≥ 55 | 198 | 137 (69.2) |  |  | 166 (83.8) | 0.828 (0.471–1.453) | 0.510 |
Location (Community) | |||||||
 A | 193 | 126 (65.3) | 1 | 0.022 | 155 (80.3) |  |  |
 B | 192 | 135 (70.3) | 1.265 (0.810–1.975) | 0.302 | 160 (83.3) |  |  |
 C | 199 | 155 (77.9) | 1.921 (1.208–3.056) | 0.006 | 167 (83.9) |  |  |
Labor worker | |||||||
 Yes | 102 | 79 (77.5) |  |  | 88 (86.3) |  |  |
 No | 482 | 337 (69.9) |  |  | 394 (81.7) |  |  |
BMI (kg/m2) | |||||||
  < 18.5 | 28 | 22 (78.6) |  |  | 25 (89.3) |  |  |
 18.5–23.9 | 368 | 275 (74.7) |  |  | 301 (81.8) |  |  |
 24–27.9 | 163 | 105 (64.4) |  |  | 135 (82.8) |  |  |
  ≥ 28 | 25 | 14 (56.0) |  |  | 21 (84.0) |  |  |