Table 3 Relative risks (RR, with 95% confidence intervals (CI)) of daily mortality in association with a 5°C increase of 2-day average temperature or a 5°C decrease of 15-day average temperature in the urban area of Beijing, by time period, age group and cause of death

Whole population

   Cardiovascular disease (I00-I99)

1.098(1.057,1.140) *

1.040(0.990,1.093)

0.982(0.958,1.007)

1.057(1.022,1.094) *

   Respiratory disease (J00-J99)

1.134(1.050,1.224) *

0.937(0.899,0.976) *^a

1.149(1.078,1.224) *

0.851(0.767,0.944) *

   Ischemic heart diseases (I20-I25)

1.020(0.975,1.067)

0.997(0.915,1.087)

0.947(0.914,0.982) *

1.123(1.057,1.193) *

   Cerebrovascular diseases (I60-I69) Cardiorespiratory diseases (I00-J99)

1.047(1.000,1.097) *

1.025(0.950,1.106)

0.980(0.954,1.007)

1.036(1.002,1.071) *

1.114(1.076,1.153) *

1.033(0.968,1.101)

1.009(0.983,1.035)

1.057(1.006,1.111) *

65+ 65+ years

   Cardiovascular disease (I00-I99)

1.093(1.048,1.139) *

1.038(0.978,1.101)

0.994(0.965,1.023)

1.054(1.016,1.093) *

   Respiratory disease (J00-J99)

1.080(1.010,1.154) *

0.931(0.890,0.973) *^a

1.128(1.056,1.204) *

0.887(0.798,0.988) *

   Ischemic heart diseases (I20-I25)

1.016(0.968,1.067)

0.978(0.888,1.077)

0.954(0.920,0.990) *

1.116(1.046,1.191) *

   Cerebrovascular diseases (I60-I69)

1.064(1.008,1.123) *

1.008(0.928,1.095)

0.999(0.961,1.038)

1.031(0.978,1.087)

   Cardiorespiratory diseases (I00-J99)

1.117(1.075,1.160) *

1.010(0.941,1.084)

1.025(0.997,1.054)

1.042(1.001,1.085) *