QAIC based on best lag number for each weather predictor considering DLNM.

<p>QAIC based on best lag number for each weather predictor considering DLNM.</p

Residual analysis for DLNM-AH model.

<p>A: Residual histogram; B: Residual v.s. Number of dengue cases per week; C: Residual autocorrelation function; D: Residual partial autocorrelation function.</p

Dengue serotype distribution in Singapore from 2001 to 2009.

<p>Dengue serotype distribution in Singapore from 2001 to 2009.</p

Time-lagged cross-correlation of dengue incidence and each weather variable (0 to 20-weeks lag).

<p>Significant correlation coefficients with p-value<0.05 are in solid circles.</p

Residual analysis for DLNM-MeanT model.

<p>A: Residual histogram; B: Residual v.s. Number of dengue cases per week; C: Residual autocorrelation function; D: Residual partial autocorrelation function.</p

Scatter plot of AH v.s. Tc and RH ((Eq. 1)).

<p>Scatter plot of AH v.s. Tc and RH ((<a href="http://www.plosntds.org/article/info:doi/10.1371/journal.pntd.0002805#pntd.0002805.e001" target="_blank">Eq. 1</a>)).</p

Weekly counts of dengue cases from 2001–2009.

<p>A: Observed dengue cases and number of fitted dengue cases estimated by the AH term in the DLNM model; B: observed dengue cases and number of fitted dengue cases estimated by the MeanT term.</p

Effect of AH and MeanT on RR of dengue incidence obtained from the distributed lag model for each sub-period.

<p>A1–A3: Effect of 0–16 weeks lag of AH; B1–B3: Effect of 0–9 weeks lag of MeanT. The grey region indicates 95% CI of fitted RR. Reference AH = 22.4 g/m3 and MeanT = 27.8°C.</p

Effect of AH and MeanT on relative risk (RR) of dengue incidence.

<p>A: RR curve shows overall cumulative effect of AH (with the maximum lag number up to 16 weeks) on dengue incidence with reference value of AH being 22.4 g/m3 and 95% CI of fitted RR shown in the grey region; B: RR curve shows overall cumulative effect of MeanT (with the maximum lag number up to 9 weeks) on dengue incidence with reference value of MeanT being 27.8°C and 95% CI of fitted RR shown in the grey region.</p