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Table 2 The effects of meteorological factors on malaria cases along the lag weeks

From: Malaria incidence from 2005–2013 and its associations with meteorological factors in Guangdong, China

 

Relative risk (95% confidence interval)

 

Lag 0

Lag 4

Lag 8

Lag 0-4 #

Lag 0-8 #

Lag 0-10/0-15 #

Mean temperature (°C) (reference value: median)

11.8

0.70(0.49,0.99)*

0.90(0.76,1.07)

0.95(0.82,1.11)

0.32(0.15,0.70)*

0.26(0.10,0.72)*

0.23(0.06,0.80)*

17.1

0.77(0.59,0.99)*

0.95(0.84,1.07)

1.01(0.90,1.14)

0.47(0.26,0.85)*

0.47(0.21,1.05)

0.48(0.17,1.36)

27.3

1.28(1.06,1.55)*

1.02(0.92,1.13)

0.96(0.87,1.06)

1.87(1.12,3.11)*

1.63(0.82,3.24)

1.57(0.70,3.50)

29.1

1.47(1.07,2.01)*

1.02(0.86,1.21)

0.94(0.80,1.11)

2.58(1.10,6.05)*

2.07(0.67,6.39)

1.98(0.54,7.23)

Duration of sunshine (hours/week) (reference value: 0)

10

0.89(0.72,1.10)

1.17(1.04,1.32)*

1.04(0.94,1.15)

1.20(0.68,2.10)

1.92(0.88,4.21)

1.60(0.66,3.85)

20

0.80(0.56,1.14)

1.30(1.06,1.59)*

1.07(0.90,1.27)

1.24(0.47,3.23)

2.75(0.73,10.38)

2.02(0.45,9.04)

40

0.68(0.47,0.99)*

1.21(0.99,1.47)

1.06(0.89,1.26)

0.69(0.25,1.92)

1.35(0.34,5.42)

1.02(0.21,5.01)

60

0.69(0.44,1.09)

1.14(0.90,1.43)

0.95(0.77,1.17)

0.63(0.18, 2.16)

0.85(0.17,4.40)

0.51(0.08,3.29)

Precipitation (mm/week) (reference value: 0)

10

0.91(0.80,1.03)

1.02(0.96,1.08)

1.06(0.98,1.14)

0.83(0.56,1.25)

1.02(0.60,1.72)

0.94(0.49,1.81)

100

0.94(0.74,1.20)

0.97(0.85,1.10)

1.00(0.87,1.15)

0.79(0.34,1.82)

0.74(0.23,2.35)

0.97(0.21,4.39)

150

0.88(0.66,1.17)

1.03(0.89,1.20)

1.13(0.96,1.32)

0.78(0.30,2.09)

1.15(0.31,4.26)

2.06(0.39,10.81)

200

0.77(0.51,1.16)

1.15(0.94,1.41)

1.38(1.11,1.72)*

0.76(0.19,2.96)

2.33(0.39,13.95)

6.00(0.61,58.96)

  1. #The cumulative RRs within lag period.
  2. *Relative risks are statistically significant. 11.8, 17.1, 27.3, and 29.1°C correspond to the 5th, 25th, 75th, and 95th percentile of weekly average temperature, respectively.