Research Article
Effectiveness of Space Spraying on the Transmission of Dengue/Dengue Hemorrhagic Fever (DF/DHF) in an Urban Area of Southern Thailand
Table 6
Multivariate analysis of factors affecting incidence of secondary DF/DHF.
| Variables | Crude IDR (95% CI) | Adj. IDR (95% CI) | -value |
| Age of index case (years) | 0.9 (0.8–1) | 0.9 (0.8–1) | 0.10 | Male gender | 2.2 (0.9–5.5) | 2.7 (1–7.2) | 0.04 | House construction: ref. = Concrete | | | | Mixed concrete and wood | 2.4 (0.6–5) | 1.7 (0.6–5.4) | 0.30 | Wood | 1.8 (0.5–7) | 0.8 (0.2–3.4) | 0.74 | Corrugated iron sheets | 5.0 (1.3–19.5) | 4.0 (1.0–16.8) | 0.05 | No window screens | 0.4 (0.1–1.2) | 0.5 (0.1–1.8) | 0.30 | Time lag of spraying (hours) | 1.0 (0.8–1.2) | 1.0 (0.8–1.3) | 0.90 | Area of spraying (m2) | 1.0 (1.0-1.0) | 1.0 (1.0-1.0) | 0.68 |
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