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Table 3 Percentage change with 95% confidence interval for hospital admissions of respiratory diseases for a 10 μg/m3 increase in particulate matter, by gender, age groups, and season

From: Effects of particulate matter on hospital admissions for respiratory diseases: an ecological study based on 12.5 years of time series data in Shanghai

Respiratory diseases

PM2.5

PM10

Percentage change (95%CI)

P value

Percentage change (95%CI)

P value

Total

0.755 (0.422,1.089)

 

0.250 (0.042,0.459)

 

Gender

 Male

0.768 (0.439,1.098)

0.255 (0.052,0.457)

 Female

0.740 (0.390,1.092)

0.909

0.244 (0.018,0.470)

0.943

Age groups, years

  < 45

−0.019(−0.418,0.382)

0.006(− 0.243,0.255)

 45–

0.701 (0.349,1.055)

0.008

0.338 (0.129,0.549)

0.046

 65–

0.865 (0.463,1.268)

0.002

0.193(−0.071,0.457)

0.312

  > =75

0.919 (0.567,1.273)

0.001

0.284 (0.058,0.510)

0.105

Season

 Cold

0.652 (0.193,1.114)

0.296(−0.010,0.603)

 Warm

0.007(−0.711,0.731)

0.803

0.182(−0.173,0.539)

0.643

COPD

1.167 (0.820,1.515)

 

0.361 (0.151,0.572)

 

Gender

 Male

1.192 (0.840,1.544)

0.390 (0.182,0.599)

 Female

1.126 (0.747,1.507)

0.763

0.314 (0.079,0.550)

0.636

Age groups, years

  < 45

1.762 (0.769,2.765)

0.607(−0.038,1.257)

 45–

1.027 (0.546,1.510)

0.193

0.326 (0.052,0.601)

0.433

 65–

1.255 (0.827,1.685)

0.359

0.428 (0.174,0.683)

0.614

  > =75

1.157 (0.793, 1.523)

0.263

0.342 (0.120,0.565)

0.448

Season

 Cold

1.170 (0.688,1.655)

0.387 (0.077, 0.699)

 Warm

0.336 (−0.407,1.084)

0.066

0.251 (− 0.101,0.604)

0.571

Asthma

1.110 (0.513,1.710)

 

0.490 (0.131,0.850)

 

Gender

 Male

0.915 (0.147,1.690)

0.356(−0.112,0.825)

 Female

1.278 (0.527,2.034)

0.509

0.607 (0.164,1.053)

0.452

Age groups, years

  < 45

−1.176(−2.857,0.534)

0.098(−0.851,1.056)

 45–

0.978 (0.165,1.799)

0.026

0.440(−0.019,0.901)

0.527

 65–

1.358 (0.348,2.378)

0.012

0.360(−0.330,1.055)

0.663

  > =75

2.161 (1.112,3.221)

0.001

0.935 (0.290,1.583)

0.155

Season

 Cold

1.186 (0.445,1.934)

0.534 (0.058,1.012)

 Warm

−0.271(−1.500,0.974)

0.049

−0.040(− 0.670,0.594)

0.179

Pneumonia

0.842 (0.442,1.244)

 

0.317 (0.072,0.562)

 

Gender

 Male

0.836 (0.432,1.243)

0.356 (0.113,0.602)

 Female

0.850 (0.417,1.286)

0.963

0.277 (0.006,0.549)

0.672

Age groups, years

  < 45

−0.178(−0.832,0.480)

 

−0.036(− 0.437,0.367)

 45–

0.966 (0.482,1.453)

0.006

0.477 (0.190,0.765)

0.042

 65–

1.129 (0.613,1.648)

0.002

0.296(−0.048,0.639)

0.219

  > =75

0.894 (0.482,1.308)

0.007

0.318 (0.058,0.580)

0.148

Season

 Cold

0.945 (0.422,1.470)

0.547 (0.201,0.895)

 Warm

−0.312(−1.129,0.512)

0.012

−0.002(− 0.410,0.409)

0.045

  1. Note: Particulate matter concentration is lag 0 for total respiratory diseases and pneumonia; lag 1 for asthma and COPD